./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --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 b1d9346b63752b34e66e21333a7236034d1604ec5ec14f79593d3da0c163d1d9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:14:37,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:37,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:37,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:37,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:37,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:37,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:37,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:37,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:37,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:37,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:37,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:37,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:37,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:37,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:37,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:37,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:37,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:37,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:37,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:37,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:37,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:37,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:37,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:37,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:37,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:37,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:37,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:37,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:37,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:37,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:37,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:37,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:37,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:37,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:37,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:37,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:37,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:37,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:37,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:37,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:37,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:14:37,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:37,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:37,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:37,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:37,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:37,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:37,169 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:37,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:37,169 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:37,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:37,169 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:37,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:37,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:37,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:37,170 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:37,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:37,171 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:37,171 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:37,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:37,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:37,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:37,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:37,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:37,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:37,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:37,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:37,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:37,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:37,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:37,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:37,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:37,180 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:37,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:37,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:37,180 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:37,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:37,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:37,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:37,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1d9346b63752b34e66e21333a7236034d1604ec5ec14f79593d3da0c163d1d9 [2022-11-03 02:14:37,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:37,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:37,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:37,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:37,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:37,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:14:37,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/data/01b47320c/54e75e8fc60048aa9231ff5d48074226/FLAG9b9d048a7 [2022-11-03 02:14:38,659 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:38,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:14:38,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/data/01b47320c/54e75e8fc60048aa9231ff5d48074226/FLAG9b9d048a7 [2022-11-03 02:14:38,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/data/01b47320c/54e75e8fc60048aa9231ff5d48074226 [2022-11-03 02:14:38,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:38,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:38,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:38,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:38,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:38,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:38" (1/1) ... [2022-11-03 02:14:38,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee60da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:38, skipping insertion in model container [2022-11-03 02:14:38,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:38" (1/1) ... [2022-11-03 02:14:38,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:39,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:42,895 WARN L230 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_46bb70cd-5a01-454f-8517-aa54bc1e12e4/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i[381126,381139] [2022-11-03 02:14:43,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:43,307 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:43,892 WARN L230 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_46bb70cd-5a01-454f-8517-aa54bc1e12e4/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i[381126,381139] [2022-11-03 02:14:43,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:44,220 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:44,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44 WrapperNode [2022-11-03 02:14:44,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:44,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:44,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:44,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:44,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:44,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,045 INFO L138 Inliner]: procedures = 549, calls = 5005, calls flagged for inlining = 246, calls inlined = 225, statements flattened = 9875 [2022-11-03 02:14:45,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:45,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:45,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:45,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:45,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:45,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:46,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:46,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:46,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:46,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:46,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:46,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:46,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:46,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:46,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:46,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46bb70cd-5a01-454f-8517-aa54bc1e12e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:14:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:14:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_urb_cleanup [2022-11-03 02:14:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_urb_cleanup [2022-11-03 02:14:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 02:14:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 02:14:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 02:14:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:14:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:14:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure pm_alsa_resume [2022-11-03 02:14:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_alsa_resume [2022-11-03 02:14:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-03 02:14:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-03 02:14:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:14:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:14:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_3 [2022-11-03 02:14:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_3 [2022-11-03 02:14:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 02:14:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 02:14:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_stop_streaming [2022-11-03 02:14:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_stop_streaming [2022-11-03 02:14:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure vdev_init [2022-11-03 02:14:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure vdev_init [2022-11-03 02:14:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_fmt [2022-11-03 02:14:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_fmt [2022-11-03 02:14:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_check_mode_dvbt [2022-11-03 02:14:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_check_mode_dvbt [2022-11-03 02:14:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency___0 [2022-11-03 02:14:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency___0 [2022-11-03 02:14:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure set_tuner_mode [2022-11-03 02:14:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tuner_mode [2022-11-03 02:14:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fm_close [2022-11-03 02:14:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fm_close [2022-11-03 02:14:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-03 02:14:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-03 02:14:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_pointer [2022-11-03 02:14:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_pointer [2022-11-03 02:14:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_vmalloc [2022-11-03 02:14:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_vmalloc [2022-11-03 02:14:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:14:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:14:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-03 02:14:46,329 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-03 02:14:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_trigger [2022-11-03 02:14:46,329 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_trigger [2022-11-03 02:14:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_check_mode_radio [2022-11-03 02:14:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_check_mode_radio [2022-11-03 02:14:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_pcm_close [2022-11-03 02:14:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_pcm_close [2022-11-03 02:14:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:14:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure check_control_id [2022-11-03 02:14:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure check_control_id [2022-11-03 02:14:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:14:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:14:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-03 02:14:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-03 02:14:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure pd_buf_queue [2022-11-03 02:14:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_buf_queue [2022-11-03 02:14:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:14:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:14:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:14:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency [2022-11-03 02:14:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency [2022-11-03 02:14:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_mmap [2022-11-03 02:14:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_mmap [2022-11-03 02:14:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 02:14:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 02:14:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:14:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:14:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:14:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure usb_transfer_stop [2022-11-03 02:14:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_transfer_stop [2022-11-03 02:14:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:14:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:14:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-11-03 02:14:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-11-03 02:14:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure is_working [2022-11-03 02:14:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure is_working [2022-11-03 02:14:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:14:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:14:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure pm_alsa_suspend [2022-11-03 02:14:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_alsa_suspend [2022-11-03 02:14:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure fire_audio_urb [2022-11-03 02:14:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_audio_urb [2022-11-03 02:14:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 02:14:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 02:14:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_stream [2022-11-03 02:14:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_stream [2022-11-03 02:14:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-03 02:14:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-03 02:14:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:14:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:14:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure get_audio_std [2022-11-03 02:14:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure get_audio_std [2022-11-03 02:14:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-03 02:14:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-03 02:14:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:14:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:14:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:14:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:14:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:14:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-03 02:14:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-03 02:14:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_open [2022-11-03 02:14:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_open [2022-11-03 02:14:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_signal_strength [2022-11-03 02:14:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_signal_strength [2022-11-03 02:14:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_release [2022-11-03 02:14:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_release [2022-11-03 02:14:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_open [2022-11-03 02:14:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_open [2022-11-03 02:14:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:14:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:14:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 02:14:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 02:14:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-03 02:14:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-03 02:14:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:14:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:14:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure send_set_req [2022-11-03 02:14:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure send_set_req [2022-11-03 02:14:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:14:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:14:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-03 02:14:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-03 02:14:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure init_copy [2022-11-03 02:14:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure init_copy [2022-11-03 02:14:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-03 02:14:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-03 02:14:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_bulk_urbs_generic [2022-11-03 02:14:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_bulk_urbs_generic [2022-11-03 02:14:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:14:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:14:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:14:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:14:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-03 02:14:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-03 02:14:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-03 02:14:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-03 02:14:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_pd_get_page [2022-11-03 02:14:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_pd_get_page [2022-11-03 02:14:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:14:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:14:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-03 02:14:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-03 02:14:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb [2022-11-03 02:14:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb [2022-11-03 02:14:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-03 02:14:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-03 02:14:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_get_fe [2022-11-03 02:14:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_get_fe [2022-11-03 02:14:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure pd_dvb_usb_device_cleanup [2022-11-03 02:14:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_dvb_usb_device_cleanup [2022-11-03 02:14:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_start_streaming [2022-11-03 02:14:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_start_streaming [2022-11-03 02:14:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:14:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:14:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:14:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:14:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-03 02:14:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-03 02:14:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:14:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:14:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:14:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_intf [2022-11-03 02:14:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_intf [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:14:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:14:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_tuner [2022-11-03 02:14:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_tuner [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:14:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:14:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure set_std [2022-11-03 02:14:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_std [2022-11-03 02:14:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb_generic [2022-11-03 02:14:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb_generic [2022-11-03 02:14:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_ts_bus_ctrl [2022-11-03 02:14:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_ts_bus_ctrl [2022-11-03 02:14:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_exit [2022-11-03 02:14:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_exit [2022-11-03 02:14:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fm_open [2022-11-03 02:14:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fm_open [2022-11-03 02:14:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-03 02:14:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-03 02:14:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:14:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:14:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_status [2022-11-03 02:14:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_status [2022-11-03 02:14:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_stop [2022-11-03 02:14:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_stop [2022-11-03 02:14:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 02:14:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 02:14:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_release [2022-11-03 02:14:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_release [2022-11-03 02:14:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:14:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:14:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 02:14:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 02:14:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure get_pd [2022-11-03 02:14:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pd [2022-11-03 02:14:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_disconnect [2022-11-03 02:14:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_disconnect [2022-11-03 02:14:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_poll [2022-11-03 02:14:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_poll [2022-11-03 02:14:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 02:14:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 02:14:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure send_get_req [2022-11-03 02:14:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure send_get_req [2022-11-03 02:14:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2022-11-03 02:14:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2022-11-03 02:14:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-11-03 02:14:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-11-03 02:14:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_hw_capture_params [2022-11-03 02:14:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_hw_capture_params [2022-11-03 02:14:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:14:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:14:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_unc_blocks [2022-11-03 02:14:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_unc_blocks [2022-11-03 02:14:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure audio_buf_free [2022-11-03 02:14:46,371 INFO L138 BoogieDeclarations]: Found implementation of procedure audio_buf_free [2022-11-03 02:14:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:14:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:14:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_get_tune_settings [2022-11-03 02:14:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_get_tune_settings [2022-11-03 02:14:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_set_fe [2022-11-03 02:14:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_set_fe [2022-11-03 02:14:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:14:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure hibernation_resume [2022-11-03 02:14:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure hibernation_resume [2022-11-03 02:14:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_hw_capture_free [2022-11-03 02:14:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_hw_capture_free [2022-11-03 02:14:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:14:46,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:14:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_resume [2022-11-03 02:14:46,377 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_resume [2022-11-03 02:14:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_checkmode [2022-11-03 02:14:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_checkmode [2022-11-03 02:14:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:14:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:14:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-11-03 02:14:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-11-03 02:14:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-03 02:14:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-03 02:14:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2022-11-03 02:14:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2022-11-03 02:14:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 02:14:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 02:14:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_vmalloc_init [2022-11-03 02:14:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_vmalloc_init [2022-11-03 02:14:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:14:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:14:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2022-11-03 02:14:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2022-11-03 02:14:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure get_autopm_ref [2022-11-03 02:14:46,379 INFO L138 BoogieDeclarations]: Found implementation of procedure get_autopm_ref [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_sleep [2022-11-03 02:14:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_sleep [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure pd_buf_setup [2022-11-03 02:14:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_buf_setup [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_video_device [2022-11-03 02:14:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_video_device [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_ber [2022-11-03 02:14:46,380 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_ber [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure set_debug_mode [2022-11-03 02:14:46,381 INFO L138 BoogieDeclarations]: Found implementation of procedure set_debug_mode [2022-11-03 02:14:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_prepare [2022-11-03 02:14:46,381 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_prepare [2022-11-03 02:14:47,745 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:47,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:58,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:20:11,664 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:14,080 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:14,080 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:20:14,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:14 BoogieIcfgContainer [2022-11-03 02:20:14,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:14,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:14,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:14,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:14,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:38" (1/3) ... [2022-11-03 02:20:14,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78412868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:14, skipping insertion in model container [2022-11-03 02:20:14,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44" (2/3) ... [2022-11-03 02:20:14,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78412868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:14, skipping insertion in model container [2022-11-03 02:20:14,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:14" (3/3) ... [2022-11-03 02:20:14,104 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:20:14,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:14,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:20:14,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:14,211 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=LoopsAndPotentialCycles, 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;@584f3c06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:14,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:20:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 2093 states, 1308 states have (on average 1.3692660550458715) internal successors, (1791), 1343 states have internal predecessors, (1791), 651 states have call successors, (651), 133 states have call predecessors, (651), 132 states have return successors, (636), 635 states have call predecessors, (636), 636 states have call successors, (636) [2022-11-03 02:20:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:20:14,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:14,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:14,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:14,242 INFO L85 PathProgramCache]: Analyzing trace with hash -25376689, now seen corresponding path program 1 times [2022-11-03 02:20:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:14,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751659309] [2022-11-03 02:20:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 02:20:15,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751659309] [2022-11-03 02:20:15,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751659309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:15,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:15,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870719940] [2022-11-03 02:20:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:15,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:15,931 INFO L87 Difference]: Start difference. First operand has 2093 states, 1308 states have (on average 1.3692660550458715) internal successors, (1791), 1343 states have internal predecessors, (1791), 651 states have call successors, (651), 133 states have call predecessors, (651), 132 states have return successors, (636), 635 states have call predecessors, (636), 636 states have call successors, (636) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:20:18,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:23,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:26,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:20:28,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:31,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:35,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:37,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:39,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:41,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:41,834 INFO L93 Difference]: Finished difference Result 6179 states and 9315 transitions. [2022-11-03 02:20:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-11-03 02:20:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:41,891 INFO L225 Difference]: With dead ends: 6179 [2022-11-03 02:20:41,891 INFO L226 Difference]: Without dead ends: 4063 [2022-11-03 02:20:41,918 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 [2022-11-03 02:20:41,927 INFO L413 NwaCegarLoop]: 3373 mSDtfsCounter, 2928 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 6119 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:41,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2932 Valid, 6119 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 605 Invalid, 6 Unknown, 0 Unchecked, 25.5s Time] [2022-11-03 02:20:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-11-03 02:20:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4054. [2022-11-03 02:20:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 2564 states have (on average 1.358424336973479) internal successors, (3483), 2593 states have internal predecessors, (3483), 1229 states have call successors, (1229), 261 states have call predecessors, (1229), 260 states have return successors, (1223), 1215 states have call predecessors, (1223), 1219 states have call successors, (1223) [2022-11-03 02:20:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5935 transitions. [2022-11-03 02:20:42,296 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5935 transitions. Word has length 74 [2022-11-03 02:20:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:42,297 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 5935 transitions. [2022-11-03 02:20:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:20:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5935 transitions. [2022-11-03 02:20:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:20:42,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:42,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:42,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:20:42,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1810745600, now seen corresponding path program 1 times [2022-11-03 02:20:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268011558] [2022-11-03 02:20:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 02:20:43,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:43,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268011558] [2022-11-03 02:20:43,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268011558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:43,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:43,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020942419] [2022-11-03 02:20:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:43,169 INFO L87 Difference]: Start difference. First operand 4054 states and 5935 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:20:45,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:47,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:50,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:53,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:20:57,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:02,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:04,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:06,165 INFO L93 Difference]: Finished difference Result 12030 states and 17628 transitions. [2022-11-03 02:21:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:06,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-11-03 02:21:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:06,222 INFO L225 Difference]: With dead ends: 12030 [2022-11-03 02:21:06,222 INFO L226 Difference]: Without dead ends: 7987 [2022-11-03 02:21:06,246 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 [2022-11-03 02:21:06,249 INFO L413 NwaCegarLoop]: 3339 mSDtfsCounter, 2893 mSDsluCounter, 3021 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:06,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2897 Valid, 6066 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 603 Invalid, 6 Unknown, 0 Unchecked, 22.7s Time] [2022-11-03 02:21:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7987 states. [2022-11-03 02:21:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7987 to 7967. [2022-11-03 02:21:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7967 states, 5040 states have (on average 1.3601190476190477) internal successors, (6855), 5092 states have internal predecessors, (6855), 2412 states have call successors, (2412), 515 states have call predecessors, (2412), 514 states have return successors, (2416), 2391 states have call predecessors, (2416), 2402 states have call successors, (2416) [2022-11-03 02:21:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 11683 transitions. [2022-11-03 02:21:06,837 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 11683 transitions. Word has length 81 [2022-11-03 02:21:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:06,840 INFO L495 AbstractCegarLoop]: Abstraction has 7967 states and 11683 transitions. [2022-11-03 02:21:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:21:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 11683 transitions. [2022-11-03 02:21:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:21:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:06,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:21:06,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -376274932, now seen corresponding path program 1 times [2022-11-03 02:21:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937322111] [2022-11-03 02:21:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 02:21:07,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:07,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937322111] [2022-11-03 02:21:07,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937322111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:07,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:07,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235982436] [2022-11-03 02:21:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:07,614 INFO L87 Difference]: Start difference. First operand 7967 states and 11683 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:21:09,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:12,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:14,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:16,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:18,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:20,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:23,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:21:27,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:29,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:32,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:32,912 INFO L93 Difference]: Finished difference Result 22744 states and 33349 transitions. [2022-11-03 02:21:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2022-11-03 02:21:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:33,014 INFO L225 Difference]: With dead ends: 22744 [2022-11-03 02:21:33,014 INFO L226 Difference]: Without dead ends: 14788 [2022-11-03 02:21:33,059 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 [2022-11-03 02:21:33,060 INFO L413 NwaCegarLoop]: 3314 mSDtfsCounter, 2527 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 6030 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:33,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 6030 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 626 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2022-11-03 02:21:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14788 states. [2022-11-03 02:21:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14788 to 14757. [2022-11-03 02:21:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14757 states, 9364 states have (on average 1.3629859034600598) internal successors, (12763), 9446 states have internal predecessors, (12763), 4428 states have call successors, (4428), 965 states have call predecessors, (4428), 964 states have return successors, (4452), 4397 states have call predecessors, (4452), 4418 states have call successors, (4452) [2022-11-03 02:21:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 21643 transitions. [2022-11-03 02:21:34,161 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 21643 transitions. Word has length 88 [2022-11-03 02:21:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:34,161 INFO L495 AbstractCegarLoop]: Abstraction has 14757 states and 21643 transitions. [2022-11-03 02:21:34,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:21:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 21643 transitions. [2022-11-03 02:21:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:21:34,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:34,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:21:34,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1855925697, now seen corresponding path program 1 times [2022-11-03 02:21:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354719957] [2022-11-03 02:21:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 02:21:34,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:34,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354719957] [2022-11-03 02:21:34,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354719957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:34,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:34,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:34,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138614292] [2022-11-03 02:21:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:34,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:34,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:34,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:34,934 INFO L87 Difference]: Start difference. First operand 14757 states and 21643 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:21:37,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:39,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:41,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:43,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:46,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:21:52,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:55,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:57,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:59,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:59,230 INFO L93 Difference]: Finished difference Result 44013 states and 64538 transitions. [2022-11-03 02:21:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-11-03 02:21:59,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:59,390 INFO L225 Difference]: With dead ends: 44013 [2022-11-03 02:21:59,390 INFO L226 Difference]: Without dead ends: 29267 [2022-11-03 02:21:59,460 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 [2022-11-03 02:21:59,461 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 2904 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:59,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2910 Valid, 6094 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 7 Unknown, 0 Unchecked, 23.2s Time] [2022-11-03 02:21:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29267 states. [2022-11-03 02:22:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29267 to 29245. [2022-11-03 02:22:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29245 states, 18554 states have (on average 1.3625633286622831) internal successors, (25281), 18710 states have internal predecessors, (25281), 8762 states have call successors, (8762), 1929 states have call predecessors, (8762), 1928 states have return successors, (8834), 8709 states have call predecessors, (8834), 8752 states have call successors, (8834) [2022-11-03 02:22:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29245 states to 29245 states and 42877 transitions. [2022-11-03 02:22:01,128 INFO L78 Accepts]: Start accepts. Automaton has 29245 states and 42877 transitions. Word has length 89 [2022-11-03 02:22:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:01,129 INFO L495 AbstractCegarLoop]: Abstraction has 29245 states and 42877 transitions. [2022-11-03 02:22:01,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:22:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29245 states and 42877 transitions. [2022-11-03 02:22:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:22:01,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:01,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:01,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:22:01,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2141063970, now seen corresponding path program 1 times [2022-11-03 02:22:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:01,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059405074] [2022-11-03 02:22:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 02:22:03,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:03,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059405074] [2022-11-03 02:22:03,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059405074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:03,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:03,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656009104] [2022-11-03 02:22:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:03,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:03,129 INFO L87 Difference]: Start difference. First operand 29245 states and 42877 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:22:05,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:07,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:11,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:14,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:22:20,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:22,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:24,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:24,731 INFO L93 Difference]: Finished difference Result 80086 states and 118080 transitions. [2022-11-03 02:22:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2022-11-03 02:22:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:25,182 INFO L225 Difference]: With dead ends: 80086 [2022-11-03 02:22:25,182 INFO L226 Difference]: Without dead ends: 50852 [2022-11-03 02:22:25,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:25,285 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 2485 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 5727 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:25,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 5727 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 589 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2022-11-03 02:22:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50852 states. [2022-11-03 02:22:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50852 to 50741. [2022-11-03 02:22:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50741 states, 32669 states have (on average 1.3756466374850775) internal successors, (44941), 33364 states have internal predecessors, (44941), 14574 states have call successors, (14574), 3658 states have call predecessors, (14574), 3497 states have return successors, (15242), 13878 states have call predecessors, (15242), 14562 states have call successors, (15242) [2022-11-03 02:22:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50741 states to 50741 states and 74757 transitions. [2022-11-03 02:22:28,523 INFO L78 Accepts]: Start accepts. Automaton has 50741 states and 74757 transitions. Word has length 95 [2022-11-03 02:22:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:28,524 INFO L495 AbstractCegarLoop]: Abstraction has 50741 states and 74757 transitions. [2022-11-03 02:22:28,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:22:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50741 states and 74757 transitions. [2022-11-03 02:22:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:22:28,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:28,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:28,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:28,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash 144545388, now seen corresponding path program 1 times [2022-11-03 02:22:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:28,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221602539] [2022-11-03 02:22:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 02:22:29,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:29,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221602539] [2022-11-03 02:22:29,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221602539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:29,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495064011] [2022-11-03 02:22:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:29,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:29,519 INFO L87 Difference]: Start difference. First operand 50741 states and 74757 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:22:31,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:34,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:43,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:46,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:49,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:52,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:22:55,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:57,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:57,522 INFO L93 Difference]: Finished difference Result 101447 states and 149469 transitions. [2022-11-03 02:22:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-11-03 02:22:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:58,219 INFO L225 Difference]: With dead ends: 101447 [2022-11-03 02:22:58,219 INFO L226 Difference]: Without dead ends: 101444 [2022-11-03 02:22:58,269 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 [2022-11-03 02:22:58,271 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 2985 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 6053 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:58,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 6053 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 7 Unknown, 0 Unchecked, 25.6s Time] [2022-11-03 02:22:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101444 states. [2022-11-03 02:23:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101444 to 101430. [2022-11-03 02:23:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101430 states, 65313 states have (on average 1.3757291810206238) internal successors, (89853), 66696 states have internal predecessors, (89853), 29122 states have call successors, (29122), 7314 states have call predecessors, (29122), 6994 states have return successors, (30478), 27739 states have call predecessors, (30478), 29110 states have call successors, (30478) [2022-11-03 02:23:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101430 states to 101430 states and 149453 transitions. [2022-11-03 02:23:04,925 INFO L78 Accepts]: Start accepts. Automaton has 101430 states and 149453 transitions. Word has length 97 [2022-11-03 02:23:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:04,927 INFO L495 AbstractCegarLoop]: Abstraction has 101430 states and 149453 transitions. [2022-11-03 02:23:04,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 101430 states and 149453 transitions. [2022-11-03 02:23:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 02:23:04,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:04,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:23:04,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 184967118, now seen corresponding path program 1 times [2022-11-03 02:23:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:04,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177123432] [2022-11-03 02:23:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 02:23:05,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:05,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177123432] [2022-11-03 02:23:05,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177123432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:05,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:05,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:05,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86937932] [2022-11-03 02:23:05,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:05,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:05,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:05,983 INFO L87 Difference]: Start difference. First operand 101430 states and 149453 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:08,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:10,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:14,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:19,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:21,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:24,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:28,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:31,409 INFO L93 Difference]: Finished difference Result 101690 states and 149770 transitions. [2022-11-03 02:23:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-11-03 02:23:31,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:32,116 INFO L225 Difference]: With dead ends: 101690 [2022-11-03 02:23:32,116 INFO L226 Difference]: Without dead ends: 101687 [2022-11-03 02:23:32,163 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 [2022-11-03 02:23:32,166 INFO L413 NwaCegarLoop]: 3352 mSDtfsCounter, 2968 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:32,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2972 Valid, 6060 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 6 Unknown, 0 Unchecked, 22.8s Time] [2022-11-03 02:23:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101687 states. [2022-11-03 02:23:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101687 to 101673. [2022-11-03 02:23:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101673 states, 65456 states have (on average 1.3753666585186997) internal successors, (90026), 66841 states have internal predecessors, (90026), 29182 states have call successors, (29182), 7352 states have call predecessors, (29182), 7034 states have return successors, (30546), 27801 states have call predecessors, (30546), 29170 states have call successors, (30546) [2022-11-03 02:23:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101673 states to 101673 states and 149754 transitions. [2022-11-03 02:23:37,134 INFO L78 Accepts]: Start accepts. Automaton has 101673 states and 149754 transitions. Word has length 98 [2022-11-03 02:23:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:37,135 INFO L495 AbstractCegarLoop]: Abstraction has 101673 states and 149754 transitions. [2022-11-03 02:23:37,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 101673 states and 149754 transitions. [2022-11-03 02:23:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:23:37,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:37,139 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:23:37,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1438045615, now seen corresponding path program 1 times [2022-11-03 02:23:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278224969] [2022-11-03 02:23:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 02:23:38,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278224969] [2022-11-03 02:23:38,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278224969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:38,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:38,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122516712] [2022-11-03 02:23:38,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:38,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:38,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:38,254 INFO L87 Difference]: Start difference. First operand 101673 states and 149754 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:23:40,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:42,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:46,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:48,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:53,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:55,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:58,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:02,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:05,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:07,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:07,842 INFO L93 Difference]: Finished difference Result 101731 states and 149807 transitions. [2022-11-03 02:24:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:07,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-11-03 02:24:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:08,245 INFO L225 Difference]: With dead ends: 101731 [2022-11-03 02:24:08,245 INFO L226 Difference]: Without dead ends: 101728 [2022-11-03 02:24:08,452 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 [2022-11-03 02:24:08,453 INFO L413 NwaCegarLoop]: 3354 mSDtfsCounter, 2972 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:08,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 6065 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 7 Unknown, 0 Unchecked, 26.7s Time] [2022-11-03 02:24:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101728 states. [2022-11-03 02:24:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101728 to 101714. [2022-11-03 02:24:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101714 states, 65477 states have (on average 1.3752462696824839) internal successors, (90047), 66866 states have internal predecessors, (90047), 29190 states have call successors, (29190), 7360 states have call predecessors, (29190), 7046 states have return successors, (30554), 27809 states have call predecessors, (30554), 29178 states have call successors, (30554) [2022-11-03 02:24:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101714 states to 101714 states and 149791 transitions. [2022-11-03 02:24:13,117 INFO L78 Accepts]: Start accepts. Automaton has 101714 states and 149791 transitions. Word has length 99 [2022-11-03 02:24:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:13,117 INFO L495 AbstractCegarLoop]: Abstraction has 101714 states and 149791 transitions. [2022-11-03 02:24:13,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:24:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 101714 states and 149791 transitions. [2022-11-03 02:24:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:24:13,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:13,124 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:24:13,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1628778225, now seen corresponding path program 1 times [2022-11-03 02:24:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:13,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204671150] [2022-11-03 02:24:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:13,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 02:24:13,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:13,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204671150] [2022-11-03 02:24:13,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204671150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:13,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:13,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774869955] [2022-11-03 02:24:13,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:13,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:13,802 INFO L87 Difference]: Start difference. First operand 101714 states and 149791 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:24:15,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:19,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:21,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:24,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:34,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:36,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:39,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:44,514 INFO L93 Difference]: Finished difference Result 304712 states and 448904 transitions. [2022-11-03 02:24:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2022-11-03 02:24:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:45,817 INFO L225 Difference]: With dead ends: 304712 [2022-11-03 02:24:45,817 INFO L226 Difference]: Without dead ends: 203009 [2022-11-03 02:24:46,227 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 [2022-11-03 02:24:46,227 INFO L413 NwaCegarLoop]: 3364 mSDtfsCounter, 2965 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 6075 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:46,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 6075 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 600 Invalid, 5 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 02:24:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203009 states.