./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--video--fbdev--core--fb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW --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 2bf66c918295559060a8e3ec892f4cbf4fc66cf4b9f3e9338e9b0a339b20bc2f --- 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-4e7fbc6 [2022-11-23 15:19:15,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:19:15,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:19:16,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:19:16,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:19:16,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:19:16,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:19:16,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:19:16,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:19:16,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:19:16,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:19:16,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:19:16,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:19:16,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:19:16,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:19:16,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:19:16,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:19:16,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:19:16,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:19:16,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:19:16,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:19:16,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:19:16,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:19:16,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:19:16,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:19:16,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:19:16,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:19:16,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:19:16,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:19:16,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:19:16,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:19:16,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:19:16,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:19:16,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:19:16,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:19:16,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:19:16,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:19:16,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:19:16,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:19:16,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:19:16,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:19:16,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:19:16,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:19:16,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:19:16,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:19:16,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:19:16,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:19:16,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:19:16,130 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:19:16,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:19:16,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:19:16,132 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:19:16,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:19:16,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:19:16,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:19:16,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:19:16,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:19:16,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:19:16,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:19:16,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:19:16,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:19:16,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:19:16,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:19:16,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:19:16,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:19:16,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:19:16,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:16,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:19:16,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:19:16,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:19:16,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:19:16,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:19:16,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:19:16,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:19:16,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:19:16,137 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_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf66c918295559060a8e3ec892f4cbf4fc66cf4b9f3e9338e9b0a339b20bc2f [2022-11-23 15:19:16,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:19:16,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:19:16,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:19:16,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:19:16,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:19:16,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i [2022-11-23 15:19:19,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:19:20,400 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:19:20,401 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i [2022-11-23 15:19:20,456 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/data/9e3302c5e/0692c3033ec141a29e9809a13805ec2c/FLAG079d1c176 [2022-11-23 15:19:20,472 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/data/9e3302c5e/0692c3033ec141a29e9809a13805ec2c [2022-11-23 15:19:20,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:19:20,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:19:20,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:20,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:19:20,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:19:20,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:20" (1/1) ... [2022-11-23 15:19:20,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7ba92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:20, skipping insertion in model container [2022-11-23 15:19:20,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:20" (1/1) ... [2022-11-23 15:19:20,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:19:20,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:19:24,296 WARN L237 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_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i[416114,416127] [2022-11-23 15:19:24,369 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 15:19:24,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:24,491 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:19:25,134 WARN L237 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_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i[416114,416127] [2022-11-23 15:19:25,141 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 15:19:25,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:25,389 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:19:25,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25 WrapperNode [2022-11-23 15:19:25,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:25,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:25,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:19:25,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:19:25,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:25,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,284 INFO L138 Inliner]: procedures = 416, calls = 8999, calls flagged for inlining = 161, calls inlined = 152, statements flattened = 14470 [2022-11-23 15:19:26,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:26,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:19:26,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:19:26,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:19:26,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:26,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:27,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:19:27,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:19:27,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:19:27,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:19:27,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (1/1) ... [2022-11-23 15:19:27,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:27,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:27,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:19:27,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:19:27,332 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_vfreq [2022-11-23 15:19:27,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_vfreq [2022-11-23 15:19:27,332 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 15:19:27,332 INFO L130 BoogieDeclarations]: Found specification of procedure fb_create_modedb [2022-11-23 15:19:27,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_create_modedb [2022-11-23 15:19:27,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:19:27,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:19:27,333 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_mkwrite [2022-11-23 15:19:27,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_mkwrite [2022-11-23 15:19:27,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:19:27,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:19:27,333 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-23 15:19:27,333 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-23 15:19:27,333 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_dclk [2022-11-23 15:19:27,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_dclk [2022-11-23 15:19:27,333 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_limits_block [2022-11-23 15:19:27,334 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_limits_block [2022-11-23 15:19:27,334 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_monitor_block [2022-11-23 15:19:27,334 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_monitor_block [2022-11-23 15:19:27,334 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 15:19:27,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:19:27,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:19:27,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:19:27,334 INFO L130 BoogieDeclarations]: Found specification of procedure put_fb_info [2022-11-23 15:19:27,335 INFO L138 BoogieDeclarations]: Found implementation of procedure put_fb_info [2022-11-23 15:19:27,335 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2022-11-23 15:19:27,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2022-11-23 15:19:27,335 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_timing_block [2022-11-23 15:19:27,335 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_timing_block [2022-11-23 15:19:27,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:19:27,335 INFO L130 BoogieDeclarations]: Found specification of procedure pm_vt_switch_required [2022-11-23 15:19:27,335 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_vt_switch_required [2022-11-23 15:19:27,335 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_ascii_block [2022-11-23 15:19:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_ascii_block [2022-11-23 15:19:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 15:19:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 15:19:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:19:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:19:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:19:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:19:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_hfreq [2022-11-23 15:19:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_hfreq [2022-11-23 15:19:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_framebuffer [2022-11-23 15:19:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_framebuffer [2022-11-23 15:19:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_fault [2022-11-23 15:19:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_fault [2022-11-23 15:19:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure fb_seq_show [2022-11-23 15:19:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_seq_show [2022-11-23 15:19:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure fb_pan_display [2022-11-23 15:19:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_pan_display [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure fb_be_math [2022-11-23 15:19:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_be_math [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure fb_var_to_videomode [2022-11-23 15:19:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_var_to_videomode [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_vblank [2022-11-23 15:19:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_vblank [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-23 15:19:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-23 15:19:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:19:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure fb_getput_cmap [2022-11-23 15:19:27,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_getput_cmap [2022-11-23 15:19:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:19:27,340 INFO L130 BoogieDeclarations]: Found specification of procedure fb_mode_is_equal [2022-11-23 15:19:27,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_mode_is_equal [2022-11-23 15:19:27,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:19:27,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:19:27,341 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_framebuffer [2022-11-23 15:19:27,341 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_framebuffer [2022-11-23 15:19:27,341 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 15:19:27,341 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 15:19:27,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:19:27,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:19:27,342 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-23 15:19:27,342 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-23 15:19:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:19:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure fb_show_logo_line [2022-11-23 15:19:27,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_show_logo_line [2022-11-23 15:19:27,344 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 15:19:27,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 15:19:27,344 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2022-11-23 15:19:27,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2022-11-23 15:19:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:19:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:19:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:19:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:19:27,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:19:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:19:27,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:19:27,346 INFO L130 BoogieDeclarations]: Found specification of procedure fb_find_mode_cvt [2022-11-23 15:19:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_find_mode_cvt [2022-11-23 15:19:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure do_fb_ioctl [2022-11-23 15:19:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fb_ioctl [2022-11-23 15:19:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_logocmap [2022-11-23 15:19:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_logocmap [2022-11-23 15:19:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure lock_page [2022-11-23 15:19:27,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_page [2022-11-23 15:19:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure fb_copy_cmap [2022-11-23 15:19:27,348 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_copy_cmap [2022-11-23 15:19:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-23 15:19:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-23 15:19:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure fb_notifier_call_chain [2022-11-23 15:19:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_notifier_call_chain [2022-11-23 15:19:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure edid_check_header [2022-11-23 15:19:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_check_header [2022-11-23 15:19:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_set_page_dirty [2022-11-23 15:19:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_set_page_dirty [2022-11-23 15:19:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-23 15:19:27,351 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-23 15:19:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure calc_mode_timings [2022-11-23 15:19:27,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_mode_timings [2022-11-23 15:19:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:19:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:19:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:19:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:19:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure fb_ioctl [2022-11-23 15:19:27,358 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_ioctl [2022-11-23 15:19:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 15:19:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 15:19:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:19:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:19:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:19:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:19:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 15:19:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 15:19:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure fb_write [2022-11-23 15:19:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_write [2022-11-23 15:19:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-23 15:19:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-23 15:19:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-23 15:19:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-23 15:19:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 15:19:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 15:19:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2022-11-23 15:19:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2022-11-23 15:19:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:19:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:19:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:19:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:19:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-23 15:19:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-23 15:19:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:19:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:19:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:19:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:19:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure edid_checksum [2022-11-23 15:19:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_checksum [2022-11-23 15:19:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure do_remove_conflicting_framebuffers [2022-11-23 15:19:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure do_remove_conflicting_framebuffers [2022-11-23 15:19:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure fb_release [2022-11-23 15:19:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_release [2022-11-23 15:19:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:19:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:19:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:19:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure get_fb_info [2022-11-23 15:19:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fb_info [2022-11-23 15:19:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure copy_in_user [2022-11-23 15:19:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_in_user [2022-11-23 15:19:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:19:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_work [2022-11-23 15:19:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_work [2022-11-23 15:19:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure fb_dealloc_cmap [2022-11-23 15:19:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_dealloc_cmap [2022-11-23 15:19:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 15:19:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 15:19:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-11-23 15:19:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-11-23 15:19:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:19:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_fsync [2022-11-23 15:19:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_fsync [2022-11-23 15:19:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:19:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:19:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:19:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:19:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure proc_fb_open [2022-11-23 15:19:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_fb_open [2022-11-23 15:19:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_serial_block [2022-11-23 15:19:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_serial_block [2022-11-23 15:19:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 15:19:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 15:19:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_fb_info [2022-11-23 15:19:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_fb_info [2022-11-23 15:19:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure get_std_timing [2022-11-23 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure get_std_timing [2022-11-23 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_cmap [2022-11-23 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_cmap [2022-11-23 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 15:19:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure file_fb_info [2022-11-23 15:19:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure file_fb_info [2022-11-23 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_page [2022-11-23 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_page [2022-11-23 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure fb_mmap [2022-11-23 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_mmap [2022-11-23 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_from_videomode [2022-11-23 15:19:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_from_videomode [2022-11-23 15:19:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modedb [2022-11-23 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modedb [2022-11-23 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure fb_compat_ioctl [2022-11-23 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_compat_ioctl [2022-11-23 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2022-11-23 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2022-11-23 15:19:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure lock_fb_info [2022-11-23 15:19:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_fb_info [2022-11-23 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure safe_shift [2022-11-23 15:19:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure safe_shift [2022-11-23 15:19:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_open [2022-11-23 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_open [2022-11-23 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2022-11-23 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2022-11-23 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:19:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:19:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure fb_read [2022-11-23 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_read [2022-11-23 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 15:19:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 15:19:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure fb_open [2022-11-23 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_open [2022-11-23 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2022-11-23 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2022-11-23 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-23 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-23 15:19:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure fb_blank [2022-11-23 15:19:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_blank [2022-11-23 15:19:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-23 15:19:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-23 15:19:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-23 15:19:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-23 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 15:19:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_fscreeninfo [2022-11-23 15:19:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_fscreeninfo [2022-11-23 15:19:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure fix_edid [2022-11-23 15:19:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_edid [2022-11-23 15:19:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure check_edid [2022-11-23 15:19:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure check_edid [2022-11-23 15:19:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure fb_alloc_cmap_gfp [2022-11-23 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_alloc_cmap_gfp [2022-11-23 15:19:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:19:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:19:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_hblank_by_hfreq [2022-11-23 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_hblank_by_hfreq [2022-11-23 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure get_detailed_timing [2022-11-23 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure get_detailed_timing [2022-11-23 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure fb_seq_stop [2022-11-23 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_seq_stop [2022-11-23 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:19:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 15:19:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 15:19:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure fb_show_logo [2022-11-23 15:19:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_show_logo [2022-11-23 15:19:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure copy_string [2022-11-23 15:19:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_string [2022-11-23 15:19:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-23 15:19:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-23 15:19:28,835 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:19:28,845 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:19:42,571 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:20:32,429 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:20:40,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:20:40,047 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:20:40,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:40 BoogieIcfgContainer [2022-11-23 15:20:40,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:20:40,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:20:40,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:20:40,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:20:40,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:20" (1/3) ... [2022-11-23 15:20:40,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203bc7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:40, skipping insertion in model container [2022-11-23 15:20:40,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:25" (2/3) ... [2022-11-23 15:20:40,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203bc7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:40, skipping insertion in model container [2022-11-23 15:20:40,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:40" (3/3) ... [2022-11-23 15:20:40,062 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i [2022-11-23 15:20:40,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:20:40,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:20:40,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:20:40,199 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;@79756982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:20:40,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:20:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 1744 states, 1140 states have (on average 1.4026315789473685) internal successors, (1599), 1183 states have internal predecessors, (1599), 481 states have call successors, (481), 122 states have call predecessors, (481), 121 states have return successors, (474), 463 states have call predecessors, (474), 474 states have call successors, (474) [2022-11-23 15:20:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-23 15:20:40,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:40,248 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:40,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1646296403, now seen corresponding path program 1 times [2022-11-23 15:20:40,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245932710] [2022-11-23 15:20:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-23 15:20:42,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245932710] [2022-11-23 15:20:42,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245932710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:42,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:42,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906821213] [2022-11-23 15:20:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:42,952 INFO L87 Difference]: Start difference. First operand has 1744 states, 1140 states have (on average 1.4026315789473685) internal successors, (1599), 1183 states have internal predecessors, (1599), 481 states have call successors, (481), 122 states have call predecessors, (481), 121 states have return successors, (474), 463 states have call predecessors, (474), 474 states have call successors, (474) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-23 15:20:45,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:47,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:20:49,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:51,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:20:54,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:20:56,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:20:58,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:00,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:02,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:04,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:06,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:08,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:09,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:11,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:13,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:16,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:18,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:19,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:21,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:25,993 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 [] [2022-11-23 15:21:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:26,275 INFO L93 Difference]: Finished difference Result 5047 states and 7476 transitions. [2022-11-23 15:21:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:26,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 223 [2022-11-23 15:21:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:26,321 INFO L225 Difference]: With dead ends: 5047 [2022-11-23 15:21:26,321 INFO L226 Difference]: Without dead ends: 3324 [2022-11-23 15:21:26,335 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 [2022-11-23 15:21:26,338 INFO L413 NwaCegarLoop]: 2760 mSDtfsCounter, 2342 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:26,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 4992 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 588 Invalid, 12 Unknown, 0 Unchecked, 42.9s Time] [2022-11-23 15:21:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2022-11-23 15:21:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3315. [2022-11-23 15:21:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2172 states have (on average 1.393646408839779) internal successors, (3027), 2238 states have internal predecessors, (3027), 906 states have call successors, (906), 237 states have call predecessors, (906), 236 states have return successors, (915), 880 states have call predecessors, (915), 904 states have call successors, (915) [2022-11-23 15:21:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4848 transitions. [2022-11-23 15:21:26,649 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4848 transitions. Word has length 223 [2022-11-23 15:21:26,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:26,653 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4848 transitions. [2022-11-23 15:21:26,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-23 15:21:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4848 transitions. [2022-11-23 15:21:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-23 15:21:26,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:26,671 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:26,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:21:26,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash -809622591, now seen corresponding path program 1 times [2022-11-23 15:21:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:26,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098208662] [2022-11-23 15:21:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-23 15:21:28,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:28,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098208662] [2022-11-23 15:21:28,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098208662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:28,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:28,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173772963] [2022-11-23 15:21:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:28,055 INFO L87 Difference]: Start difference. First operand 3315 states and 4848 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:21:30,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:33,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:36,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:37,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:39,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:41,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:44,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:48,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:50,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:52,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:54,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:56,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:21:58,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:00,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:01,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:03,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:05,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:07,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:11,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:11,556 INFO L93 Difference]: Finished difference Result 7457 states and 10802 transitions. [2022-11-23 15:22:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 237 [2022-11-23 15:22:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:11,587 INFO L225 Difference]: With dead ends: 7457 [2022-11-23 15:22:11,587 INFO L226 Difference]: Without dead ends: 4189 [2022-11-23 15:22:11,604 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 [2022-11-23 15:22:11,607 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 583 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:11,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 4540 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 599 Invalid, 13 Unknown, 0 Unchecked, 43.3s Time] [2022-11-23 15:22:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-11-23 15:22:11,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4180. [2022-11-23 15:22:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4180 states, 2743 states have (on average 1.3893547211082755) internal successors, (3811), 2834 states have internal predecessors, (3811), 1095 states have call successors, (1095), 342 states have call predecessors, (1095), 341 states have return successors, (1106), 1056 states have call predecessors, (1106), 1093 states have call successors, (1106) [2022-11-23 15:22:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 6012 transitions. [2022-11-23 15:22:11,881 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 6012 transitions. Word has length 237 [2022-11-23 15:22:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:11,882 INFO L495 AbstractCegarLoop]: Abstraction has 4180 states and 6012 transitions. [2022-11-23 15:22:11,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:22:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 6012 transitions. [2022-11-23 15:22:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-23 15:22:11,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:11,888 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2022-11-23 15:22:11,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:22:11,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash 990095273, now seen corresponding path program 1 times [2022-11-23 15:22:11,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:11,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961117467] [2022-11-23 15:22:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-11-23 15:22:13,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:13,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961117467] [2022-11-23 15:22:13,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961117467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:13,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:13,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45935168] [2022-11-23 15:22:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:13,125 INFO L87 Difference]: Start difference. First operand 4180 states and 6012 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 15:22:15,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:17,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:19,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:21,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:23,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:27,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:30,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:32,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:33,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:35,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:38,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:40,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:43,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:45,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:47,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:49,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:50,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:22:53,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:54,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:22:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:22:56,032 INFO L93 Difference]: Finished difference Result 12345 states and 17894 transitions. [2022-11-23 15:22:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:22:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 272 [2022-11-23 15:22:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:22:56,088 INFO L225 Difference]: With dead ends: 12345 [2022-11-23 15:22:56,089 INFO L226 Difference]: Without dead ends: 8210 [2022-11-23 15:22:56,113 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 [2022-11-23 15:22:56,114 INFO L413 NwaCegarLoop]: 2736 mSDtfsCounter, 2310 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 4938 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:22:56,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 4938 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 12 Unknown, 0 Unchecked, 42.6s Time] [2022-11-23 15:22:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-11-23 15:22:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8193. [2022-11-23 15:22:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8193 states, 5373 states have (on average 1.3886097152428811) internal successors, (7461), 5551 states have internal predecessors, (7461), 2146 states have call successors, (2146), 674 states have call predecessors, (2146), 673 states have return successors, (2249), 2066 states have call predecessors, (2249), 2144 states have call successors, (2249) [2022-11-23 15:22:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8193 states to 8193 states and 11856 transitions. [2022-11-23 15:22:56,504 INFO L78 Accepts]: Start accepts. Automaton has 8193 states and 11856 transitions. Word has length 272 [2022-11-23 15:22:56,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:22:56,509 INFO L495 AbstractCegarLoop]: Abstraction has 8193 states and 11856 transitions. [2022-11-23 15:22:56,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-23 15:22:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8193 states and 11856 transitions. [2022-11-23 15:22:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-23 15:22:56,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:22:56,518 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2022-11-23 15:22:56,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:22:56,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:22:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:22:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1203339903, now seen corresponding path program 1 times [2022-11-23 15:22:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:22:56,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986331533] [2022-11-23 15:22:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:22:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:22:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-11-23 15:22:57,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986331533] [2022-11-23 15:22:57,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986331533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:22:57,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:22:57,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:22:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388683350] [2022-11-23 15:22:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:22:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:22:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:22:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:22:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:22:57,690 INFO L87 Difference]: Start difference. First operand 8193 states and 11856 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:22:59,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:01,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:03,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:04,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:06,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:08,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:11,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:13,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:15,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:16,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:18,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:21,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:23,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:25,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:27,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:30,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:32,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:35,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:37,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:39,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:40,047 INFO L93 Difference]: Finished difference Result 13030 states and 18769 transitions. [2022-11-23 15:23:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:23:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2022-11-23 15:23:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:40,077 INFO L225 Difference]: With dead ends: 13030 [2022-11-23 15:23:40,077 INFO L226 Difference]: Without dead ends: 4883 [2022-11-23 15:23:40,113 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 [2022-11-23 15:23:40,114 INFO L413 NwaCegarLoop]: 2237 mSDtfsCounter, 5 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:40,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4467 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 13 Unknown, 0 Unchecked, 42.2s Time] [2022-11-23 15:23:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2022-11-23 15:23:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4878. [2022-11-23 15:23:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 3190 states have (on average 1.3846394984326018) internal successors, (4417), 3305 states have internal predecessors, (4417), 1256 states have call successors, (1256), 432 states have call predecessors, (1256), 431 states have return successors, (1301), 1203 states have call predecessors, (1301), 1254 states have call successors, (1301) [2022-11-23 15:23:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 6974 transitions. [2022-11-23 15:23:40,423 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 6974 transitions. Word has length 294 [2022-11-23 15:23:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:40,424 INFO L495 AbstractCegarLoop]: Abstraction has 4878 states and 6974 transitions. [2022-11-23 15:23:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 15:23:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 6974 transitions. [2022-11-23 15:23:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-23 15:23:40,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:40,433 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 15:23:40,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:23:40,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1320683070, now seen corresponding path program 1 times [2022-11-23 15:23:40,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:40,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896920733] [2022-11-23 15:23:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2022-11-23 15:23:41,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:41,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896920733] [2022-11-23 15:23:41,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896920733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:41,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:23:41,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:23:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669447217] [2022-11-23 15:23:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:23:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:23:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:23:41,709 INFO L87 Difference]: Start difference. First operand 4878 states and 6974 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 15:23:43,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:46,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:47,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:49,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:52,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:54,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:23:56,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:23:59,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:01,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:05,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:24:07,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:24:09,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:24:11,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:12,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:14,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:16,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:24:19,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:24:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:21,598 INFO L93 Difference]: Finished difference Result 11355 states and 16282 transitions. [2022-11-23 15:24:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:24:21,599 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), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 318 [2022-11-23 15:24:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:21,642 INFO L225 Difference]: With dead ends: 11355 [2022-11-23 15:24:21,642 INFO L226 Difference]: Without dead ends: 7137 [2022-11-23 15:24:21,663 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 [2022-11-23 15:24:21,664 INFO L413 NwaCegarLoop]: 3148 mSDtfsCounter, 1584 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 20 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:21,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 5316 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 740 Invalid, 13 Unknown, 0 Unchecked, 39.7s Time] [2022-11-23 15:24:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2022-11-23 15:24:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 7104. [2022-11-23 15:24:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 4682 states have (on average 1.3850918410935498) internal successors, (6485), 4833 states have internal predecessors, (6485), 1796 states have call successors, (1796), 626 states have call predecessors, (1796), 625 states have return successors, (1876), 1729 states have call predecessors, (1876), 1794 states have call successors, (1876) [2022-11-23 15:24:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 10157 transitions. [2022-11-23 15:24:21,978 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 10157 transitions. Word has length 318 [2022-11-23 15:24:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:21,980 INFO L495 AbstractCegarLoop]: Abstraction has 7104 states and 10157 transitions. [2022-11-23 15:24:21,980 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), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-23 15:24:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 10157 transitions. [2022-11-23 15:24:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-23 15:24:21,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:21,993 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 15:24:21,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:24:21,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -852951617, now seen corresponding path program 1 times [2022-11-23 15:24:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:21,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598183790] [2022-11-23 15:24:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2022-11-23 15:24:46,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:46,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598183790] [2022-11-23 15:24:46,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598183790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:24:46,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258774252] [2022-11-23 15:24:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:46,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:24:46,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:24:46,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:24:46,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c7ad9d-76db-4eb9-b6da-b1fb87c0a092/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:24:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:50,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 13557 conjuncts, 146 conjunts are in the unsatisfiable core [2022-11-23 15:24:50,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:50,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:24:50,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:24:53,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:53,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:53,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:53,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:54,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:55,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:56,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:57,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 15:24:59,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:24:59,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-23 15:24:59,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:24:59,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-23 15:25:01,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:01,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 57 [2022-11-23 15:25:01,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:01,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 54 [2022-11-23 15:25:01,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-11-23 15:25:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2022-11-23 15:25:01,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:04,826 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.offset| |c_~#registered_fb~0.base|)) (.cse6 (select |c_#memory_$Pointer$.base| |c_~#registered_fb~0.base|))) (and (forall ((v_file_fb_info_~fbidx~0_10 Int) (v_file_fb_info_~file.offset_11 Int) (|~#registered_fb~0.offset| Int) (v_file_fb_info_~file.base_11 Int) (|aux_div_v_fb_mmap_#t~ret964#1.offset_7_94| Int)) (let ((.cse5 (+ (* 8 v_file_fb_info_~fbidx~0_10) |~#registered_fb~0.offset|))) (let ((.cse0 (select .cse6 .cse5)) (.cse1 (select .cse4 .cse5)) (.cse2 (* 18446744073709551616 |aux_div_v_fb_mmap_#t~ret964#1.offset_7_94|))) (or (not (= 0 .cse0)) (= .cse1 .cse2) (not (= (mod (+ .cse1 .cse0) 18446744073709551616) (mod (let ((.cse3 (+ 436 v_file_fb_info_~file.offset_11))) (+ (select (select |c_#memory_$Pointer$.base| v_file_fb_info_~file.base_11) .cse3) (select (select |c_#memory_$Pointer$.offset| v_file_fb_info_~file.base_11) .cse3))) 18446744073709551616))) (<= (+ 18446744073709551616 .cse2) .cse1) (< .cse1 .cse2))))) (forall ((v_file_fb_info_~fbidx~0_10 Int) (v_file_fb_info_~file.offset_11 Int) (|~#registered_fb~0.offset| Int) (v_file_fb_info_~file.base_11 Int) (|aux_div_v_fb_mmap_#t~ret964#1.offset_7_94| Int)) (let ((.cse11 (+ (* 8 v_file_fb_info_~fbidx~0_10) |~#registered_fb~0.offset|))) (let ((.cse9 (select .cse4 .cse11))) (let ((.cse8 (+ .cse9 (select .cse6 .cse11))) (.cse7 (* 18446744073709551616 |aux_div_v_fb_mmap_#t~ret964#1.offset_7_94|))) (or (= .cse7 .cse8) (not (= .cse9 0)) (<= (+ 18446744073709551616 .cse7) .cse8) (not (= (mod .cse8 18446744073709551616) (mod (let ((.cse10 (+ 436 v_file_fb_info_~file.offset_11))) (+ (select (select |c_#memory_$Pointer$.base| v_file_fb_info_~file.base_11) .cse10) (select (select |c_#memory_$Pointer$.offset| v_file_fb_info_~file.base_11) .cse10))) 18446744073709551616))) (< .cse8 .cse7)))))) (forall ((v_file_fb_info_~fbidx~0_10 Int) (v_file_fb_info_~file.offset_11 Int) (|~#registered_fb~0.offset| Int) (v_file_fb_info_~file.base_11 Int) (|aux_div_v_fb_mmap_#t~ret964#1.offset_7_94| Int)) (let ((.cse13 (let ((.cse15 (+ (* 8 v_file_fb_info_~fbidx~0_10) |~#registered_fb~0.offset|))) (+ (select .cse4 .cse15) (select .cse6 .cse15)))) (.cse12 (* 18446744073709551616 |aux_div_v_fb_mmap_#t~ret964#1.offset_7_94|))) (or (= .cse12 .cse13) (<= (+ 18446744073709551616 .cse12) .cse13) (not (= (mod .cse13 18446744073709551616) (mod (let ((.cse14 (+ 436 v_file_fb_info_~file.offset_11))) (+ (select (select |c_#memory_$Pointer$.base| v_file_fb_info_~file.base_11) .cse14) (select (select |c_#memory_$Pointer$.offset| v_file_fb_info_~file.base_11) .cse14))) 18446744073709551616))) (< .cse13 .cse12)))))) is different from false [2022-11-23 15:25:04,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258774252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:25:04,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [117222706] [2022-11-23 15:25:04,867 INFO L159 IcfgInterpreter]: Started Sifa with 152 locations of interest [2022-11-23 15:25:04,867 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:25:04,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:25:04,877 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:25:04,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:27:43,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:28:05,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:28:29,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:29,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:28:52,745 INFO L217 Elim1Store]: Index analysis took 29447 ms