./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.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_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/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_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/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_d4b60a9b-4f38-4edd-9196-fb311c900f31/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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- 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 02:13:11,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:13:11,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:13:11,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:13:11,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:13:11,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:13:11,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:13:11,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:13:11,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:13:11,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:13:11,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:13:11,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:13:11,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:13:11,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:13:11,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:13:11,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:13:11,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:13:11,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:13:11,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:13:11,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:13:11,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:13:11,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:13:11,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:13:11,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:13:11,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:13:11,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:13:11,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:13:11,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:13:11,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:13:11,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:13:11,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:13:11,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:13:11,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:13:11,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:13:11,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:13:11,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:13:11,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:13:11,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:13:11,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:13:11,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:13:11,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:13:11,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:13:11,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:13:11,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:13:11,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:13:11,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:13:11,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:13:11,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:13:11,198 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:13:11,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:13:11,199 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:13:11,199 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:13:11,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:13:11,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:13:11,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:13:11,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:13:11,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:13:11,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:13:11,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:13:11,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:13:11,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:13:11,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:13:11,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:13:11,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:13:11,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:13:11,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:13:11,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:13:11,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:13:11,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:13:11,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:13:11,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:13:11,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:11,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:13:11,207 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:13:11,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:13:11,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:13:11,208 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:13:11,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:13:11,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:13:11,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:13:11,209 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_d4b60a9b-4f38-4edd-9196-fb311c900f31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2022-11-03 02:13:11,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:13:11,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:13:11,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:13:11,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:13:11,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:13:11,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-03 02:13:11,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/data/95f44c0ec/6a4a3dcac33f456aa17cc4792a662aba/FLAG4a4644c33 [2022-11-03 02:13:12,416 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:13:12,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-03 02:13:12,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/data/95f44c0ec/6a4a3dcac33f456aa17cc4792a662aba/FLAG4a4644c33 [2022-11-03 02:13:12,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/data/95f44c0ec/6a4a3dcac33f456aa17cc4792a662aba [2022-11-03 02:13:12,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:13:12,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:13:12,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:12,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:13:12,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:13:12,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:12" (1/1) ... [2022-11-03 02:13:12,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485571ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:12, skipping insertion in model container [2022-11-03 02:13:12,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:12" (1/1) ... [2022-11-03 02:13:12,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:13:13,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:13:15,391 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_d4b60a9b-4f38-4edd-9196-fb311c900f31/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-03 02:13:15,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:15,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:13:16,004 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_d4b60a9b-4f38-4edd-9196-fb311c900f31/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-03 02:13:16,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:16,179 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:13:16,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16 WrapperNode [2022-11-03 02:13:16,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:16,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:16,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:13:16,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:13:16,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,498 INFO L138 Inliner]: procedures = 311, calls = 2050, calls flagged for inlining = 159, calls inlined = 157, statements flattened = 5633 [2022-11-03 02:13:16,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:16,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:13:16,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:13:16,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:13:16,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:13:16,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:13:16,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:13:16,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:13:16,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (1/1) ... [2022-11-03 02:13:16,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:16,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:16,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:13:16,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:13:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-03 02:13:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-03 02:13:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure loop_add [2022-11-03 02:13:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_add [2022-11-03 02:13:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:13:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:13:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:13:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:13:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure iov_iter_bvec [2022-11-03 02:13:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_iter_bvec [2022-11-03 02:13:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:13:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:13:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-03 02:13:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-03 02:13:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure loop_control_ioctl [2022-11-03 02:13:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_control_ioctl [2022-11-03 02:13:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:13:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:13:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:13:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:13:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:13:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:13:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-03 02:13:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-03 02:13:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:13:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:13:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure loop_remove [2022-11-03 02:13:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_remove [2022-11-03 02:13:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2022-11-03 02:13:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2022-11-03 02:13:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:13:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:13:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:13:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:13:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2022-11-03 02:13:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2022-11-03 02:13:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2022-11-03 02:13:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2022-11-03 02:13:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_unfreeze_queue [2022-11-03 02:13:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_unfreeze_queue [2022-11-03 02:13:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-03 02:13:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-03 02:13:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure lo_compat_ioctl [2022-11-03 02:13:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_compat_ioctl [2022-11-03 02:13:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-03 02:13:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-03 02:13:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:13:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:13:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:13:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:13:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:13:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:13:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-03 02:13:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-03 02:13:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2022-11-03 02:13:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2022-11-03 02:13:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure loop_handle_cmd [2022-11-03 02:13:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_handle_cmd [2022-11-03 02:13:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2022-11-03 02:13:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2022-11-03 02:13:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:13:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:13:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:13:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2022-11-03 02:13:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2022-11-03 02:13:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_size [2022-11-03 02:13:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_size [2022-11-03 02:13:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-03 02:13:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-03 02:13:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-03 02:13:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-03 02:13:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:13:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:13:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2022-11-03 02:13:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2022-11-03 02:13:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 02:13:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 02:13:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure lo_write_bvec [2022-11-03 02:13:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_write_bvec [2022-11-03 02:13:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:13:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:13:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:13:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:13:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:13:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:13:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:13:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:13:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status_old [2022-11-03 02:13:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status_old [2022-11-03 02:13:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-03 02:13:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-03 02:13:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:13:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:13:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:13:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:13:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure loop_reread_partitions [2022-11-03 02:13:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_reread_partitions [2022-11-03 02:13:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2022-11-03 02:13:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2022-11-03 02:13:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2022-11-03 02:13:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_iter_read [2022-11-03 02:13:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_iter_read [2022-11-03 02:13:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2022-11-03 02:13:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2022-11-03 02:13:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:13:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-03 02:13:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-03 02:13:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2022-11-03 02:13:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2022-11-03 02:13:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-03 02:13:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-03 02:13:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:13:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:13:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:13:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure bio_advance_iter [2022-11-03 02:13:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_advance_iter [2022-11-03 02:13:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_write_work [2022-11-03 02:13:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_write_work [2022-11-03 02:13:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2022-11-03 02:13:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2022-11-03 02:13:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:13:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-03 02:13:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-03 02:13:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2022-11-03 02:13:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2022-11-03 02:13:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2022-11-03 02:13:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2022-11-03 02:13:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status64 [2022-11-03 02:13:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status64 [2022-11-03 02:13:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:13:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:13:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_11 [2022-11-03 02:13:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_11 [2022-11-03 02:13:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure zero_fill_bio [2022-11-03 02:13:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_fill_bio [2022-11-03 02:13:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:13:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:13:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure loop_attr_show [2022-11-03 02:13:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_attr_show [2022-11-03 02:13:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:13:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:13:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:13:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:13:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:13:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:13:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:13:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:13:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:13:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_freeze_queue [2022-11-03 02:13:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_freeze_queue [2022-11-03 02:13:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:13:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:13:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:13:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:13:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:13:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:13:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:13:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:13:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2022-11-03 02:13:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2022-11-03 02:13:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:13:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-03 02:13:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-03 02:13:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2022-11-03 02:13:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2022-11-03 02:13:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:13:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2022-11-03 02:13:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2022-11-03 02:13:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:13:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:13:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-03 02:13:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-03 02:13:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-11-03 02:13:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-11-03 02:13:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2022-11-03 02:13:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2022-11-03 02:13:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-03 02:13:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-03 02:13:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:13:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:13:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2022-11-03 02:13:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2022-11-03 02:13:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2022-11-03 02:13:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2022-11-03 02:13:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_read_work [2022-11-03 02:13:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_read_work [2022-11-03 02:13:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-03 02:13:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-03 02:13:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:13:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:13:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2022-11-03 02:13:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2022-11-03 02:13:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-03 02:13:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-03 02:13:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:13:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:13:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-03 02:13:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-03 02:13:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:13:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 02:13:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 02:13:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:13:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:13:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure loop_lookup [2022-11-03 02:13:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_lookup [2022-11-03 02:13:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_rq [2022-11-03 02:13:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_rq [2022-11-03 02:13:17,943 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:13:17,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:13:18,438 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:13:32,127 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:13:33,896 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:13:33,897 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:13:33,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:33 BoogieIcfgContainer [2022-11-03 02:13:33,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:13:33,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:13:33,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:13:33,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:13:33,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:13:12" (1/3) ... [2022-11-03 02:13:33,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b92cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:33, skipping insertion in model container [2022-11-03 02:13:33,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:16" (2/3) ... [2022-11-03 02:13:33,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b92cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:33, skipping insertion in model container [2022-11-03 02:13:33,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:33" (3/3) ... [2022-11-03 02:13:33,918 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-03 02:13:33,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:13:33,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:13:34,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:13:34,080 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;@4a146e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:13:34,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:13:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-03 02:13:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-03 02:13:34,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:34,147 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:34,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -280481047, now seen corresponding path program 1 times [2022-11-03 02:13:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:34,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718875741] [2022-11-03 02:13:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-03 02:13:36,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718875741] [2022-11-03 02:13:36,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718875741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:36,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:36,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993512914] [2022-11-03 02:13:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:36,224 INFO L87 Difference]: Start difference. First operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:13:38,287 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 02:13:40,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:42,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:45,022 INFO L93 Difference]: Finished difference Result 3522 states and 5078 transitions. [2022-11-03 02:13:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 522 [2022-11-03 02:13:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:45,072 INFO L225 Difference]: With dead ends: 3522 [2022-11-03 02:13:45,072 INFO L226 Difference]: Without dead ends: 2339 [2022-11-03 02:13:45,085 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 02:13:45,088 INFO L413 NwaCegarLoop]: 1883 mSDtfsCounter, 1610 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:45,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 3439 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 407 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:13:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-11-03 02:13:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2336. [2022-11-03 02:13:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1512 states have (on average 1.3531746031746033) internal successors, (2046), 1551 states have internal predecessors, (2046), 640 states have call successors, (640), 184 states have call predecessors, (640), 183 states have return successors, (638), 634 states have call predecessors, (638), 638 states have call successors, (638) [2022-11-03 02:13:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3324 transitions. [2022-11-03 02:13:45,357 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3324 transitions. Word has length 522 [2022-11-03 02:13:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:45,366 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3324 transitions. [2022-11-03 02:13:45,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:13:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3324 transitions. [2022-11-03 02:13:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-11-03 02:13:45,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:45,510 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:45,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:45,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1822363867, now seen corresponding path program 1 times [2022-11-03 02:13:45,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:45,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923433433] [2022-11-03 02:13:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-03 02:13:46,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:46,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923433433] [2022-11-03 02:13:46,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923433433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:46,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:46,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434937410] [2022-11-03 02:13:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:46,653 INFO L87 Difference]: Start difference. First operand 2336 states and 3324 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:13:48,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:50,988 WARN L539 Checker$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 02:13:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:55,094 INFO L93 Difference]: Finished difference Result 5820 states and 8244 transitions. [2022-11-03 02:13:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 544 [2022-11-03 02:13:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:55,120 INFO L225 Difference]: With dead ends: 5820 [2022-11-03 02:13:55,120 INFO L226 Difference]: Without dead ends: 3583 [2022-11-03 02:13:55,130 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 02:13:55,131 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 1022 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:55,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 3116 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 418 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 02:13:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-11-03 02:13:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3573. [2022-11-03 02:13:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 2338 states have (on average 1.36142001710864) internal successors, (3183), 2390 states have internal predecessors, (3183), 935 states have call successors, (935), 300 states have call predecessors, (935), 299 states have return successors, (937), 926 states have call predecessors, (937), 933 states have call successors, (937) [2022-11-03 02:13:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5055 transitions. [2022-11-03 02:13:55,288 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5055 transitions. Word has length 544 [2022-11-03 02:13:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:55,291 INFO L495 AbstractCegarLoop]: Abstraction has 3573 states and 5055 transitions. [2022-11-03 02:13:55,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:13:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5055 transitions. [2022-11-03 02:13:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-03 02:13:55,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:55,307 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:55,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1494682149, now seen corresponding path program 1 times [2022-11-03 02:13:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921138820] [2022-11-03 02:13:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5021 trivial. 0 not checked. [2022-11-03 02:13:56,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:56,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921138820] [2022-11-03 02:13:56,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921138820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:56,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:56,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:56,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463035059] [2022-11-03 02:13:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:56,151 INFO L87 Difference]: Start difference. First operand 3573 states and 5055 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:13:57,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:02,991 WARN L539 Checker$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 02:14:05,357 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 02:14:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:05,425 INFO L93 Difference]: Finished difference Result 10418 states and 14782 transitions. [2022-11-03 02:14:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 542 [2022-11-03 02:14:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:05,478 INFO L225 Difference]: With dead ends: 10418 [2022-11-03 02:14:05,479 INFO L226 Difference]: Without dead ends: 6946 [2022-11-03 02:14:05,500 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 02:14:05,501 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 1575 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:05,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3398 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:14:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-11-03 02:14:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6942. [2022-11-03 02:14:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 4559 states have (on average 1.364334283834174) internal successors, (6220), 4657 states have internal predecessors, (6220), 1789 states have call successors, (1789), 594 states have call predecessors, (1789), 593 states have return successors, (1819), 1774 states have call predecessors, (1819), 1787 states have call successors, (1819) [2022-11-03 02:14:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 9828 transitions. [2022-11-03 02:14:05,906 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 9828 transitions. Word has length 542 [2022-11-03 02:14:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:05,909 INFO L495 AbstractCegarLoop]: Abstraction has 6942 states and 9828 transitions. [2022-11-03 02:14:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:14:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 9828 transitions. [2022-11-03 02:14:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-11-03 02:14:05,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:05,931 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:14:05,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2138122428, now seen corresponding path program 1 times [2022-11-03 02:14:05,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052006592] [2022-11-03 02:14:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:05,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-03 02:14:06,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052006592] [2022-11-03 02:14:06,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052006592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:06,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:06,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:06,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47899146] [2022-11-03 02:14:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:06,760 INFO L87 Difference]: Start difference. First operand 6942 states and 9828 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-03 02:14:08,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:10,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:13,955 WARN L539 Checker$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 02:14:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:18,182 INFO L93 Difference]: Finished difference Result 17979 states and 25462 transitions. [2022-11-03 02:14:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 606 [2022-11-03 02:14:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:18,243 INFO L225 Difference]: With dead ends: 17979 [2022-11-03 02:14:18,244 INFO L226 Difference]: Without dead ends: 11147 [2022-11-03 02:14:18,272 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 02:14:18,273 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 1535 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:18,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 3983 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 541 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:14:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states. [2022-11-03 02:14:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 11135. [2022-11-03 02:14:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11135 states, 7311 states have (on average 1.3615100533442757) internal successors, (9954), 7478 states have internal predecessors, (9954), 2872 states have call successors, (2872), 952 states have call predecessors, (2872), 951 states have return successors, (2926), 2848 states have call predecessors, (2926), 2870 states have call successors, (2926) [2022-11-03 02:14:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11135 states to 11135 states and 15752 transitions. [2022-11-03 02:14:18,832 INFO L78 Accepts]: Start accepts. Automaton has 11135 states and 15752 transitions. Word has length 606 [2022-11-03 02:14:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:18,834 INFO L495 AbstractCegarLoop]: Abstraction has 11135 states and 15752 transitions. [2022-11-03 02:14:18,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-03 02:14:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 11135 states and 15752 transitions. [2022-11-03 02:14:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-03 02:14:18,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:18,860 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:18,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:14:18,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 675882104, now seen corresponding path program 1 times [2022-11-03 02:14:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119249886] [2022-11-03 02:14:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-03 02:14:20,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119249886] [2022-11-03 02:14:20,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119249886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:20,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:20,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100000447] [2022-11-03 02:14:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:20,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:20,046 INFO L87 Difference]: Start difference. First operand 11135 states and 15752 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:14:22,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:25,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:27,999 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 02:14:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:31,908 INFO L93 Difference]: Finished difference Result 22177 states and 31366 transitions. [2022-11-03 02:14:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:14:31,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 611 [2022-11-03 02:14:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:31,967 INFO L225 Difference]: With dead ends: 22177 [2022-11-03 02:14:31,967 INFO L226 Difference]: Without dead ends: 11146 [2022-11-03 02:14:32,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:14:32,014 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 8 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:32,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4679 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 02:14:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2022-11-03 02:14:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11137. [2022-11-03 02:14:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11137 states, 7313 states have (on average 1.3610009571995076) internal successors, (9953), 7480 states have internal predecessors, (9953), 2872 states have call successors, (2872), 952 states have call predecessors, (2872), 951 states have return successors, (2926), 2848 states have call predecessors, (2926), 2870 states have call successors, (2926) [2022-11-03 02:14:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11137 states to 11137 states and 15751 transitions. [2022-11-03 02:14:32,529 INFO L78 Accepts]: Start accepts. Automaton has 11137 states and 15751 transitions. Word has length 611 [2022-11-03 02:14:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:32,530 INFO L495 AbstractCegarLoop]: Abstraction has 11137 states and 15751 transitions. [2022-11-03 02:14:32,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:14:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 11137 states and 15751 transitions. [2022-11-03 02:14:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-03 02:14:32,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:32,541 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:14:32,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1437631702, now seen corresponding path program 1 times [2022-11-03 02:14:32,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:32,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96554870] [2022-11-03 02:14:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-03 02:14:33,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96554870] [2022-11-03 02:14:33,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96554870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:33,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:33,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:14:33,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297090842] [2022-11-03 02:14:33,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:14:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:14:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:14:33,717 INFO L87 Difference]: Start difference. First operand 11137 states and 15751 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 02:14:35,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:39,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:40,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:42,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:45,521 INFO L93 Difference]: Finished difference Result 22199 states and 31388 transitions. [2022-11-03 02:14:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:14:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 611 [2022-11-03 02:14:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:45,586 INFO L225 Difference]: With dead ends: 22199 [2022-11-03 02:14:45,586 INFO L226 Difference]: Without dead ends: 11157 [2022-11-03 02:14:45,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:14:45,650 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 13 mSDsluCounter, 5270 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:45,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6242 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 02:14:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11157 states. [2022-11-03 02:14:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11157 to 11144. [2022-11-03 02:14:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11144 states, 7317 states have (on average 1.3599835998359984) internal successors, (9951), 7486 states have internal predecessors, (9951), 2875 states have call successors, (2875), 952 states have call predecessors, (2875), 951 states have return successors, (2929), 2849 states have call predecessors, (2929), 2873 states have call successors, (2929) [2022-11-03 02:14:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 15755 transitions. [2022-11-03 02:14:46,242 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 15755 transitions. Word has length 611 [2022-11-03 02:14:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:46,243 INFO L495 AbstractCegarLoop]: Abstraction has 11144 states and 15755 transitions. [2022-11-03 02:14:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 02:14:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 15755 transitions. [2022-11-03 02:14:46,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-11-03 02:14:46,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:46,254 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:14:46,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1625755762, now seen corresponding path program 1 times [2022-11-03 02:14:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:46,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380579520] [2022-11-03 02:14:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-03 02:14:47,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:47,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380579520] [2022-11-03 02:14:47,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380579520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:47,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:47,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:14:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773504126] [2022-11-03 02:14:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:14:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:14:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:14:47,318 INFO L87 Difference]: Start difference. First operand 11144 states and 15755 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 02:14:49,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:53,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:55,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:58,363 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 02:14:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:59,216 INFO L93 Difference]: Finished difference Result 22197 states and 31374 transitions. [2022-11-03 02:14:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:14:59,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 613 [2022-11-03 02:14:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:59,354 INFO L225 Difference]: With dead ends: 22197 [2022-11-03 02:14:59,354 INFO L226 Difference]: Without dead ends: 11142 [2022-11-03 02:14:59,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:14:59,380 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 13 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:59,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6237 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 804 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 02:14:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2022-11-03 02:14:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 11112. [2022-11-03 02:14:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11112 states, 7298 states have (on average 1.3605097286927925) internal successors, (9929), 7465 states have internal predecessors, (9929), 2867 states have call successors, (2867), 947 states have call predecessors, (2867), 946 states have return successors, (2921), 2843 states have call predecessors, (2921), 2865 states have call successors, (2921) [2022-11-03 02:14:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 15717 transitions. [2022-11-03 02:14:59,780 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 15717 transitions. Word has length 613 [2022-11-03 02:14:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:59,781 INFO L495 AbstractCegarLoop]: Abstraction has 11112 states and 15717 transitions. [2022-11-03 02:14:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-03 02:14:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 15717 transitions. [2022-11-03 02:14:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2022-11-03 02:14:59,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:59,795 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:59,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:14:59,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:59,796 INFO L85 PathProgramCache]: Analyzing trace with hash -881745795, now seen corresponding path program 1 times [2022-11-03 02:14:59,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:59,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988082674] [2022-11-03 02:14:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2022-11-03 02:15:01,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988082674] [2022-11-03 02:15:01,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988082674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:01,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:01,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:15:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206519100] [2022-11-03 02:15:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:01,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:15:01,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:15:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:15:01,686 INFO L87 Difference]: Start difference. First operand 11112 states and 15717 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-03 02:15:04,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:11,388 INFO L93 Difference]: Finished difference Result 22297 states and 31573 transitions. [2022-11-03 02:15:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:15:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 623 [2022-11-03 02:15:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:11,440 INFO L225 Difference]: With dead ends: 22297 [2022-11-03 02:15:11,441 INFO L226 Difference]: Without dead ends: 11295 [2022-11-03 02:15:11,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:15:11,534 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1925 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:11,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 5042 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:15:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2022-11-03 02:15:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 11118. [2022-11-03 02:15:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11118 states, 7304 states have (on average 1.3598028477546549) internal successors, (9932), 7471 states have internal predecessors, (9932), 2867 states have call successors, (2867), 947 states have call predecessors, (2867), 946 states have return successors, (2921), 2843 states have call predecessors, (2921), 2865 states have call successors, (2921) [2022-11-03 02:15:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11118 states to 11118 states and 15720 transitions. [2022-11-03 02:15:12,011 INFO L78 Accepts]: Start accepts. Automaton has 11118 states and 15720 transitions. Word has length 623 [2022-11-03 02:15:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:12,013 INFO L495 AbstractCegarLoop]: Abstraction has 11118 states and 15720 transitions. [2022-11-03 02:15:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-03 02:15:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 11118 states and 15720 transitions. [2022-11-03 02:15:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-11-03 02:15:12,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:12,024 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:12,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:15:12,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1745783038, now seen corresponding path program 1 times [2022-11-03 02:15:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:12,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856228010] [2022-11-03 02:15:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-03 02:15:13,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856228010] [2022-11-03 02:15:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856228010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:15:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295473163] [2022-11-03 02:15:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:13,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:15:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:13,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:15:13,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b60a9b-4f38-4edd-9196-fb311c900f31/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:15:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:15,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 6042 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:15:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:15:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 537 proven. 1 refuted. 0 times theorem prover too weak. 5031 trivial. 0 not checked. [2022-11-03 02:15:16,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:15:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-03 02:15:18,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295473163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:15:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [835834840] [2022-11-03 02:15:18,644 INFO L159 IcfgInterpreter]: Started Sifa with 190 locations of interest [2022-11-03 02:15:18,645 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:15:18,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:15:18,656 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:15:18,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:15:21,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:22,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 77 select indices, 77 select index equivalence classes, 249 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 808 [2022-11-03 02:15:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:25,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:26,124 INFO L244 Elim1Store]: Index analysis took 3296 ms [2022-11-03 02:23:52,510 WARN L234 SmtUtils]: Spent 8.44m on a formula simplification. DAG size of input: 5660 DAG size of output: 1923 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:23:52,523 INFO L356 Elim1Store]: treesize reduction 70705, result has 6.7 percent of original size [2022-11-03 02:23:52,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 2062 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 85 case distinctions, treesize of input 393 treesize of output 5264 [2022-11-03 02:24:00,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 250 [2022-11-03 02:24:03,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 258 [2022-11-03 02:24:50,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:59,873 INFO L190 IndexEqualityManager]: detected not equals via solver