./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/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_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7 --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:17:00,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:17:00,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:17:00,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:17:00,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:17:00,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:17:00,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:17:00,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:17:00,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:17:00,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:17:00,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:17:00,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:17:00,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:17:00,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:17:00,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:17:00,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:17:00,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:17:00,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:17:00,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:17:00,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:17:00,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:17:00,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:17:00,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:17:00,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:17:00,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:17:00,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:17:00,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:17:00,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:17:00,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:17:00,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:17:00,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:17:00,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:17:00,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:17:00,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:17:00,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:17:00,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:17:00,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:17:00,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:17:00,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:17:00,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:17:00,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:17:00,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:17:00,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:17:00,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:17:00,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:17:00,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:17:00,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:17:00,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:17:00,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:17:00,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:17:00,949 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:17:00,949 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:17:00,950 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:17:00,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:17:00,951 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:17:00,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:17:00,952 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:17:00,952 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:17:00,953 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:17:00,953 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:17:00,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:17:00,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:17:00,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:17:00,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:17:00,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:17:00,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:17:00,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:17:00,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:17:00,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:17:00,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:17:00,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:17:00,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:00,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:17:00,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:17:00,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:17:00,962 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:17:00,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:17:00,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:17:00,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:17:00,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:17:00,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf66c918295559060a8e3ec892f4cbf4fc66cf4b9f3e9338e9b0a339b20bc2f [2021-11-25 18:17:01,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:17:01,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:17:01,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:17:01,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:17:01,304 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:17:01,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/../../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 [2021-11-25 18:17:01,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/data/cf3f589bb/55af602b0d09494a94640116eea96772/FLAGebb095dc1 [2021-11-25 18:17:02,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:17:02,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/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 [2021-11-25 18:17:02,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/data/cf3f589bb/55af602b0d09494a94640116eea96772/FLAGebb095dc1 [2021-11-25 18:17:02,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/data/cf3f589bb/55af602b0d09494a94640116eea96772 [2021-11-25 18:17:02,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:17:02,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:17:02,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:02,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:17:02,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:17:02,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:02" (1/1) ... [2021-11-25 18:17:02,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791a4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:02, skipping insertion in model container [2021-11-25 18:17:02,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:02" (1/1) ... [2021-11-25 18:17:02,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:17:03,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:17:07,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/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] [2021-11-25 18:17:07,838 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-25 18:17:07,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:08,031 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:17:08,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/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] [2021-11-25 18:17:08,937 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-25 18:17:08,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:09,312 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:17:09,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09 WrapperNode [2021-11-25 18:17:09,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:09,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:09,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:17:09,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:17:09,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:09,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:10,538 INFO L137 Inliner]: procedures = 416, calls = 9044, calls flagged for inlining = 161, calls inlined = 152, statements flattened = 14316 [2021-11-25 18:17:10,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:10,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:17:10,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:17:10,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:17:10,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:10,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:10,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:10,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:11,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:11,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:11,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:11,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:17:11,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:17:11,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:17:11,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:17:11,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (1/1) ... [2021-11-25 18:17:11,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:11,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:17:11,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:17:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_vfreq [2021-11-25 18:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_vfreq [2021-11-25 18:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 18:17:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure fb_create_modedb [2021-11-25 18:17:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_create_modedb [2021-11-25 18:17:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:17:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_mkwrite [2021-11-25 18:17:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_mkwrite [2021-11-25 18:17:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:17:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:17:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-25 18:17:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-25 18:17:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_dclk [2021-11-25 18:17:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_dclk [2021-11-25 18:17:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_limits_block [2021-11-25 18:17:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_limits_block [2021-11-25 18:17:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_monitor_block [2021-11-25 18:17:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_monitor_block [2021-11-25 18:17:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:17:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure put_fb_info [2021-11-25 18:17:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure put_fb_info [2021-11-25 18:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2021-11-25 18:17:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2021-11-25 18:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_timing_block [2021-11-25 18:17:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_timing_block [2021-11-25 18:17:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure pm_vt_switch_required [2021-11-25 18:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_vt_switch_required [2021-11-25 18:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_ascii_block [2021-11-25 18:17:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_ascii_block [2021-11-25 18:17:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-25 18:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-25 18:17:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:17:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure fb_timings_hfreq [2021-11-25 18:17:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_timings_hfreq [2021-11-25 18:17:11,537 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_framebuffer [2021-11-25 18:17:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_framebuffer [2021-11-25 18:17:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_fault [2021-11-25 18:17:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_fault [2021-11-25 18:17:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure fb_seq_show [2021-11-25 18:17:11,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_seq_show [2021-11-25 18:17:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure fb_pan_display [2021-11-25 18:17:11,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_pan_display [2021-11-25 18:17:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure fb_be_math [2021-11-25 18:17:11,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_be_math [2021-11-25 18:17:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:17:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure fb_var_to_videomode [2021-11-25 18:17:11,542 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_var_to_videomode [2021-11-25 18:17:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_vblank [2021-11-25 18:17:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_vblank [2021-11-25 18:17:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:17:11,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:17:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure fb_getput_cmap [2021-11-25 18:17:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_getput_cmap [2021-11-25 18:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:17:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure fb_mode_is_equal [2021-11-25 18:17:11,545 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_mode_is_equal [2021-11-25 18:17:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:17:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:17:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_framebuffer [2021-11-25 18:17:11,546 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_framebuffer [2021-11-25 18:17:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 18:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 18:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 18:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 18:17:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-25 18:17:11,547 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-25 18:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure fb_show_logo_line [2021-11-25 18:17:11,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_show_logo_line [2021-11-25 18:17:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 18:17:11,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 18:17:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2021-11-25 18:17:11,550 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2021-11-25 18:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:17:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:17:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:17:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:17:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:17:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure fb_find_mode_cvt [2021-11-25 18:17:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_find_mode_cvt [2021-11-25 18:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure do_fb_ioctl [2021-11-25 18:17:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fb_ioctl [2021-11-25 18:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_logocmap [2021-11-25 18:17:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_logocmap [2021-11-25 18:17:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure lock_page [2021-11-25 18:17:11,555 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_page [2021-11-25 18:17:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure fb_copy_cmap [2021-11-25 18:17:11,555 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_copy_cmap [2021-11-25 18:17:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-25 18:17:11,555 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-25 18:17:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure fb_notifier_call_chain [2021-11-25 18:17:11,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_notifier_call_chain [2021-11-25 18:17:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure edid_check_header [2021-11-25 18:17:11,557 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_check_header [2021-11-25 18:17:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_set_page_dirty [2021-11-25 18:17:11,557 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_set_page_dirty [2021-11-25 18:17:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 18:17:11,558 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 18:17:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure calc_mode_timings [2021-11-25 18:17:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_mode_timings [2021-11-25 18:17:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:17:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:17:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:17:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:17:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure fb_ioctl [2021-11-25 18:17:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_ioctl [2021-11-25 18:17:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:17:11,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:17:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:17:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:17:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:17:11,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:17:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:17:11,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:17:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure fb_write [2021-11-25 18:17:11,574 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_write [2021-11-25 18:17:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-25 18:17:11,574 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-25 18:17:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-25 18:17:11,574 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-25 18:17:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 18:17:11,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 18:17:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2021-11-25 18:17:11,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2021-11-25 18:17:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:17:11,576 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:17:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 18:17:11,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 18:17:11,576 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-25 18:17:11,576 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-25 18:17:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:17:11,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:17:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:17:11,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:17:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure edid_checksum [2021-11-25 18:17:11,578 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_checksum [2021-11-25 18:17:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure do_remove_conflicting_framebuffers [2021-11-25 18:17:11,579 INFO L138 BoogieDeclarations]: Found implementation of procedure do_remove_conflicting_framebuffers [2021-11-25 18:17:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure fb_release [2021-11-25 18:17:11,579 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_release [2021-11-25 18:17:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:17:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:17:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:17:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure get_fb_info [2021-11-25 18:17:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fb_info [2021-11-25 18:17:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure copy_in_user [2021-11-25 18:17:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_in_user [2021-11-25 18:17:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:17:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_work [2021-11-25 18:17:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_work [2021-11-25 18:17:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure fb_dealloc_cmap [2021-11-25 18:17:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_dealloc_cmap [2021-11-25 18:17:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 18:17:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 18:17:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2021-11-25 18:17:11,583 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2021-11-25 18:17:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:17:11,583 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_fsync [2021-11-25 18:17:11,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_fsync [2021-11-25 18:17:11,584 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:17:11,584 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:17:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 18:17:11,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 18:17:11,585 INFO L130 BoogieDeclarations]: Found specification of procedure proc_fb_open [2021-11-25 18:17:11,585 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_fb_open [2021-11-25 18:17:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure edid_is_serial_block [2021-11-25 18:17:11,586 INFO L138 BoogieDeclarations]: Found implementation of procedure edid_is_serial_block [2021-11-25 18:17:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:17:11,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:17:11,586 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_fb_info [2021-11-25 18:17:11,587 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_fb_info [2021-11-25 18:17:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure get_std_timing [2021-11-25 18:17:11,589 INFO L138 BoogieDeclarations]: Found implementation of procedure get_std_timing [2021-11-25 18:17:11,589 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_cmap [2021-11-25 18:17:11,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_cmap [2021-11-25 18:17:11,589 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:17:11,589 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:17:11,589 INFO L130 BoogieDeclarations]: Found specification of procedure file_fb_info [2021-11-25 18:17:11,590 INFO L138 BoogieDeclarations]: Found implementation of procedure file_fb_info [2021-11-25 18:17:11,590 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_page [2021-11-25 18:17:11,590 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_page [2021-11-25 18:17:11,590 INFO L130 BoogieDeclarations]: Found specification of procedure fb_mmap [2021-11-25 18:17:11,590 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_mmap [2021-11-25 18:17:11,591 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_from_videomode [2021-11-25 18:17:11,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_from_videomode [2021-11-25 18:17:11,591 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modedb [2021-11-25 18:17:11,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modedb [2021-11-25 18:17:11,591 INFO L130 BoogieDeclarations]: Found specification of procedure fb_compat_ioctl [2021-11-25 18:17:11,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_compat_ioctl [2021-11-25 18:17:11,592 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2021-11-25 18:17:11,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2021-11-25 18:17:11,592 INFO L130 BoogieDeclarations]: Found specification of procedure lock_fb_info [2021-11-25 18:17:11,592 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_fb_info [2021-11-25 18:17:11,593 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:17:11,593 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:17:11,593 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:17:11,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:17:11,593 INFO L130 BoogieDeclarations]: Found specification of procedure safe_shift [2021-11-25 18:17:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure safe_shift [2021-11-25 18:17:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:17:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_open [2021-11-25 18:17:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_open [2021-11-25 18:17:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release [2021-11-25 18:17:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release [2021-11-25 18:17:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:17:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:17:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure fb_read [2021-11-25 18:17:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_read [2021-11-25 18:17:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 18:17:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 18:17:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 18:17:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 18:17:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:17:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:17:11,597 INFO L130 BoogieDeclarations]: Found specification of procedure fb_open [2021-11-25 18:17:11,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_open [2021-11-25 18:17:11,597 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2021-11-25 18:17:11,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2021-11-25 18:17:11,597 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 18:17:11,597 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 18:17:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure fb_blank [2021-11-25 18:17:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_blank [2021-11-25 18:17:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2021-11-25 18:17:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2021-11-25 18:17:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2021-11-25 18:17:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2021-11-25 18:17:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:17:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:17:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_fscreeninfo [2021-11-25 18:17:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_fscreeninfo [2021-11-25 18:17:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure fix_edid [2021-11-25 18:17:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_edid [2021-11-25 18:17:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure check_edid [2021-11-25 18:17:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure check_edid [2021-11-25 18:17:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure fb_alloc_cmap_gfp [2021-11-25 18:17:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_alloc_cmap_gfp [2021-11-25 18:17:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:17:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:17:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_hblank_by_hfreq [2021-11-25 18:17:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_hblank_by_hfreq [2021-11-25 18:17:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure get_detailed_timing [2021-11-25 18:17:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure get_detailed_timing [2021-11-25 18:17:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure fb_seq_stop [2021-11-25 18:17:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_seq_stop [2021-11-25 18:17:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:17:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:17:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:17:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure fb_show_logo [2021-11-25 18:17:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_show_logo [2021-11-25 18:17:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure copy_string [2021-11-25 18:17:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_string [2021-11-25 18:17:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-25 18:17:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-25 18:17:13,211 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:17:13,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:17:34,480 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:18:38,456 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:18:45,112 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:18:45,112 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:18:45,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:45 BoogieIcfgContainer [2021-11-25 18:18:45,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:18:45,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:18:45,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:18:45,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:18:45,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:02" (1/3) ... [2021-11-25 18:18:45,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13236a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:45, skipping insertion in model container [2021-11-25 18:18:45,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:09" (2/3) ... [2021-11-25 18:18:45,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13236a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:45, skipping insertion in model container [2021-11-25 18:18:45,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:45" (3/3) ... [2021-11-25 18:18:45,137 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--fbdev--core--fb.ko-entry_point.cil.out.i [2021-11-25 18:18:45,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:18:45,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:18:45,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:18:45,242 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:18:45,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:18:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 1725 states, 1121 states have (on average 1.3951828724353257) internal successors, (1564), 1164 states have internal predecessors, (1564), 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) [2021-11-25 18:18:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-25 18:18:45,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:45,375 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:18:45,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:18:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1054456258, now seen corresponding path program 1 times [2021-11-25 18:18:45,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738453142] [2021-11-25 18:18:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:45,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-25 18:18:47,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:47,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738453142] [2021-11-25 18:18:47,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738453142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:47,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:47,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:18:47,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789675867] [2021-11-25 18:18:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:47,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:18:47,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:18:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:18:47,503 INFO L87 Difference]: Start difference. First operand has 1725 states, 1121 states have (on average 1.3951828724353257) internal successors, (1564), 1164 states have internal predecessors, (1564), 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) [2021-11-25 18:18:50,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:52,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:54,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:18:56,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:18:59,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:01,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:03,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:05,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:08,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:11,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:13,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:14,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:15,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:18,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:20,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:22,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:24,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:26,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:29,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:31,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:33,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:19:37,090 INFO L93 Difference]: Finished difference Result 5001 states and 7400 transitions. [2021-11-25 18:19:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:19:37,097 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 [2021-11-25 18:19:37,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:19:37,192 INFO L225 Difference]: With dead ends: 5001 [2021-11-25 18:19:37,192 INFO L226 Difference]: Without dead ends: 3297 [2021-11-25 18:19:37,219 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:19:37,227 INFO L933 BasicCegarLoop]: 2708 mSDtfsCounter, 2331 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 3 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:19:37,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 4896 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 595 Invalid, 16 Unknown, 0 Unchecked, 49.1s Time] [2021-11-25 18:19:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2021-11-25 18:19:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3284. [2021-11-25 18:19:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 2147 states have (on average 1.390777829529576) internal successors, (2986), 2212 states have internal predecessors, (2986), 902 states have call successors, (902), 235 states have call predecessors, (902), 234 states have return successors, (914), 876 states have call predecessors, (914), 900 states have call successors, (914) [2021-11-25 18:19:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4802 transitions. [2021-11-25 18:19:37,820 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4802 transitions. Word has length 223 [2021-11-25 18:19:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:19:37,827 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 4802 transitions. [2021-11-25 18:19:37,827 INFO L471 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) [2021-11-25 18:19:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4802 transitions. [2021-11-25 18:19:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 18:19:37,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:19:37,844 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:19:37,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:19:37,844 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:19:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:19:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1955662956, now seen corresponding path program 1 times [2021-11-25 18:19:37,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:19:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790599263] [2021-11-25 18:19:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:19:37,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:19:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:19:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-25 18:19:39,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:19:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790599263] [2021-11-25 18:19:39,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790599263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:19:39,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:19:39,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:19:39,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816267890] [2021-11-25 18:19:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:19:39,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:19:39,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:19:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:19:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:19:39,128 INFO L87 Difference]: Start difference. First operand 3284 states and 4802 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) [2021-11-25 18:19:41,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:44,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:45,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:49,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:51,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:19:55,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:19:57,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:00,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:03,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:05,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:07,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:09,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:11,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:12,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:14,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:15,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:18,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:21,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:23,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:25,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:26,219 INFO L93 Difference]: Finished difference Result 7599 states and 11026 transitions. [2021-11-25 18:20:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:20:26,220 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 [2021-11-25 18:20:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:26,274 INFO L225 Difference]: With dead ends: 7599 [2021-11-25 18:20:26,274 INFO L226 Difference]: Without dead ends: 4362 [2021-11-25 18:20:26,301 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:20:26,305 INFO L933 BasicCegarLoop]: 2397 mSDtfsCounter, 732 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:26,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 4553 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 14 Unknown, 0 Unchecked, 46.8s Time] [2021-11-25 18:20:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2021-11-25 18:20:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4293. [2021-11-25 18:20:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4293 states, 2816 states have (on average 1.3892045454545454) internal successors, (3912), 2916 states have internal predecessors, (3912), 1133 states have call successors, (1133), 344 states have call predecessors, (1133), 343 states have return successors, (1153), 1088 states have call predecessors, (1153), 1131 states have call successors, (1153) [2021-11-25 18:20:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 6198 transitions. [2021-11-25 18:20:26,588 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 6198 transitions. Word has length 237 [2021-11-25 18:20:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:26,591 INFO L470 AbstractCegarLoop]: Abstraction has 4293 states and 6198 transitions. [2021-11-25 18:20:26,592 INFO L471 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) [2021-11-25 18:20:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 6198 transitions. [2021-11-25 18:20:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 18:20:26,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:26,602 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:20:26,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:20:26,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash 505874615, now seen corresponding path program 1 times [2021-11-25 18:20:26,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:26,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465059571] [2021-11-25 18:20:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:26,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2021-11-25 18:20:27,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:27,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465059571] [2021-11-25 18:20:27,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465059571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:27,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:27,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:20:27,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540195086] [2021-11-25 18:20:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:27,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:27,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:27,874 INFO L87 Difference]: Start difference. First operand 4293 states and 6198 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) [2021-11-25 18:20:30,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:32,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:34,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:37,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:39,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:43,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:45,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:48,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:50,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:53,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:20:54,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:56,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:20:58,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:00,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:02,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:05,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:07,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:08,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:11,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:13,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:15,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:17,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:20,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:22,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:22,681 INFO L93 Difference]: Finished difference Result 12700 states and 18487 transitions. [2021-11-25 18:21:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:22,682 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 [2021-11-25 18:21:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:22,778 INFO L225 Difference]: With dead ends: 12700 [2021-11-25 18:21:22,778 INFO L226 Difference]: Without dead ends: 8452 [2021-11-25 18:21:22,816 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:21:22,820 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 2300 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:22,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2322 Valid, 4961 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 19 Unknown, 0 Unchecked, 54.5s Time] [2021-11-25 18:21:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8452 states. [2021-11-25 18:21:23,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8452 to 8376. [2021-11-25 18:21:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 5504 states have (on average 1.3902616279069768) internal successors, (7652), 5691 states have internal predecessors, (7652), 2202 states have call successors, (2202), 670 states have call predecessors, (2202), 669 states have return successors, (2326), 2116 states have call predecessors, (2326), 2200 states have call successors, (2326) [2021-11-25 18:21:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 12180 transitions. [2021-11-25 18:21:23,500 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 12180 transitions. Word has length 272 [2021-11-25 18:21:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 8376 states and 12180 transitions. [2021-11-25 18:21:23,507 INFO L471 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) [2021-11-25 18:21:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 12180 transitions. [2021-11-25 18:21:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-25 18:21:23,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:23,518 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:21:23,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:21:23,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 317675800, now seen corresponding path program 1 times [2021-11-25 18:21:23,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:23,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164495836] [2021-11-25 18:21:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:23,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2021-11-25 18:21:24,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164495836] [2021-11-25 18:21:24,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164495836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:24,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:24,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:24,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859781648] [2021-11-25 18:21:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:24,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:24,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:24,499 INFO L87 Difference]: Start difference. First operand 8376 states and 12180 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) [2021-11-25 18:21:26,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:29,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:30,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:31,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:35,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:37,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:39,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:43,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:45,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:48,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:51,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:53,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:21:55,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:00,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:02,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:05,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:06,576 INFO L93 Difference]: Finished difference Result 13229 states and 19151 transitions. [2021-11-25 18:22:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:06,577 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 [2021-11-25 18:22:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:06,627 INFO L225 Difference]: With dead ends: 13229 [2021-11-25 18:22:06,627 INFO L226 Difference]: Without dead ends: 4899 [2021-11-25 18:22:06,674 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:22:06,675 INFO L933 BasicCegarLoop]: 2193 mSDtfsCounter, 5 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:06,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4379 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 579 Invalid, 14 Unknown, 0 Unchecked, 41.9s Time] [2021-11-25 18:22:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2021-11-25 18:22:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4894. [2021-11-25 18:22:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4894 states, 3200 states have (on average 1.3834375) internal successors, (4427), 3318 states have internal predecessors, (4427), 1274 states have call successors, (1274), 420 states have call predecessors, (1274), 419 states have return successors, (1331), 1218 states have call predecessors, (1331), 1272 states have call successors, (1331) [2021-11-25 18:22:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4894 states to 4894 states and 7032 transitions. [2021-11-25 18:22:06,956 INFO L78 Accepts]: Start accepts. Automaton has 4894 states and 7032 transitions. Word has length 294 [2021-11-25 18:22:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:06,957 INFO L470 AbstractCegarLoop]: Abstraction has 4894 states and 7032 transitions. [2021-11-25 18:22:06,958 INFO L471 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) [2021-11-25 18:22:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4894 states and 7032 transitions. [2021-11-25 18:22:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-25 18:22:06,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:06,969 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:22:06,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:22:06,970 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1342580117, now seen corresponding path program 1 times [2021-11-25 18:22:06,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:06,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120046520] [2021-11-25 18:22:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1191 trivial. 0 not checked. [2021-11-25 18:22:07,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120046520] [2021-11-25 18:22:07,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120046520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:07,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965014476] [2021-11-25 18:22:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:07,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:07,989 INFO L87 Difference]: Start difference. First operand 4894 states and 7032 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) [2021-11-25 18:22:10,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:13,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:15,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:17,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:20,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:22,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:27,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:29,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:31,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:33,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:35,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:37,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:39,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:43,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:45,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:48,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:50,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:51,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:53,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:57,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:22:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:57,820 INFO L93 Difference]: Finished difference Result 11459 states and 16481 transitions. [2021-11-25 18:22:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:57,821 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 [2021-11-25 18:22:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:57,877 INFO L225 Difference]: With dead ends: 11459 [2021-11-25 18:22:57,878 INFO L226 Difference]: Without dead ends: 7153 [2021-11-25 18:22:57,901 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:22:57,902 INFO L933 BasicCegarLoop]: 3114 mSDtfsCounter, 1587 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 20 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 5238 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:57,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 5238 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 760 Invalid, 16 Unknown, 0 Unchecked, 49.6s Time] [2021-11-25 18:22:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2021-11-25 18:22:58,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7122. [2021-11-25 18:22:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7122 states, 4693 states have (on average 1.384189217984232) internal successors, (6496), 4847 states have internal predecessors, (6496), 1814 states have call successors, (1814), 615 states have call predecessors, (1814), 614 states have return successors, (1898), 1744 states have call predecessors, (1898), 1812 states have call successors, (1898) [2021-11-25 18:22:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 10208 transitions. [2021-11-25 18:22:58,252 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 10208 transitions. Word has length 318 [2021-11-25 18:22:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:58,255 INFO L470 AbstractCegarLoop]: Abstraction has 7122 states and 10208 transitions. [2021-11-25 18:22:58,255 INFO L471 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) [2021-11-25 18:22:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 10208 transitions. [2021-11-25 18:22:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-25 18:22:58,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:58,273 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:22:58,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:22:58,273 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1644618281, now seen corresponding path program 1 times [2021-11-25 18:22:58,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163037846] [2021-11-25 18:22:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:58,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2021-11-25 18:23:01,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:01,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163037846] [2021-11-25 18:23:01,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163037846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:01,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552934653] [2021-11-25 18:23:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:01,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:01,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:01,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba8298c-e5b4-4c2e-a544-4c5a57e6a2a6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:23:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:05,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 13733 conjuncts, 144 conjunts are in the unsatisfiable core [2021-11-25 18:23:05,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:05,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:09,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:09,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:09,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:09,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:10,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:11,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:11,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:11,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:11,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:11,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:12,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:12,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:12,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:12,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:12,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:13,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:13,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:13,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:13,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:13,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:14,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:14,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:14,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:16,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:16,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:16,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:16,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:18,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:18,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:18,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:18,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:18,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:23:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2021-11-25 18:23:18,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:22,637 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_fb_mmap_#t~ret966#1.offset_8_92| Int) (v_file_fb_info_~fbidx~0_10 Int) (|~#registered_fb~0.offset| Int)) (let ((.cse1 (* 18446744073709551616 |aux_div_v_fb_mmap_#t~ret966#1.offset_8_92|)) (.cse0 (let ((.cse4 (+ (* v_file_fb_info_~fbidx~0_10 8) |~#registered_fb~0.offset|))) (+ (select (select |c_#memory_$Pointer$.offset| |c_~#registered_fb~0.base|) .cse4) (select (select |c_#memory_$Pointer$.base| |c_~#registered_fb~0.base|) .cse4))))) (or (= .cse0 .cse1) (< .cse0 .cse1) (<= (+ 18446744073709551616 .cse1) .cse0) (forall ((v_file_fb_info_~file.offset_11 Int) (v_file_fb_info_~file.base_11 Int)) (not (= (mod (let ((.cse2 (+ (* v_file_fb_info_~fbidx~0_10 8) |~#registered_fb~0.offset|))) (+ (select (select |c_#memory_$Pointer$.offset| |c_~#registered_fb~0.base|) .cse2) (select (select |c_#memory_$Pointer$.base| |c_~#registered_fb~0.base|) .cse2))) 18446744073709551616) (mod (let ((.cse3 (+ 436 v_file_fb_info_~file.offset_11))) (+ (select (select |c_#memory_$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))))))) is different from false [2021-11-25 18:23:22,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552934653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811040335] [2021-11-25 18:23:22,681 INFO L159 IcfgInterpreter]: Started Sifa with 152 locations of interest [2021-11-25 18:23:22,681 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:22,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:22,700 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:22,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:25:12,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 18:25:34,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:41,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:25:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:26:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:26:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:27:13,540 INFO L190 IndexEqualityManager]: detected not equals via solver