./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--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:37:34,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:37:34,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:37:34,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:37:34,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:37:34,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:37:34,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:37:34,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:37:34,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:37:34,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:37:34,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:37:34,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:37:34,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:37:34,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:37:34,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:37:34,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:37:34,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:37:34,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:37:34,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:37:34,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:37:34,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:37:34,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:37:34,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:37:34,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:37:34,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:37:34,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:37:34,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:37:34,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:37:34,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:37:34,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:37:34,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:37:34,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:37:34,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:37:34,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:37:34,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:37:34,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:37:34,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:37:34,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:37:34,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:37:34,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:37:34,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:37:34,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:37:34,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:37:34,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:37:34,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:37:34,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:37:34,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:37:34,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:37:34,992 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:37:34,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:37:34,993 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:37:34,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:37:34,994 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:37:34,995 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:37:34,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:37:34,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:37:34,995 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:37:34,996 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:37:34,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:37:34,996 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:37:34,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:37:34,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:37:34,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:37:34,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:37:34,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:37:34,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:37:34,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:37:35,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:37:35,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:37:35,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:37:35,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:37:35,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:35,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:37:35,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:37:35,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:37:35,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:37:35,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:37:35,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:37:35,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:37:35,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:37:35,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2022-11-23 14:37:35,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:37:35,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:37:35,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:37:35,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:37:35,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:37:35,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-23 14:37:38,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:37:39,071 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:37:39,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-23 14:37:39,139 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/data/a4b413bd8/188b7013a5354ea89e102196d51eab77/FLAG775bb8a2e [2022-11-23 14:37:39,157 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/data/a4b413bd8/188b7013a5354ea89e102196d51eab77 [2022-11-23 14:37:39,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:37:39,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:37:39,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:39,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:37:39,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:37:39,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5089eb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39, skipping insertion in model container [2022-11-23 14:37:39,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:37:39,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:37:42,230 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-23 14:37:42,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:42,386 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:37:42,881 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-23 14:37:42,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:43,081 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:37:43,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43 WrapperNode [2022-11-23 14:37:43,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:43,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:43,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:37:43,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:37:43,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,561 INFO L138 Inliner]: procedures = 371, calls = 4454, calls flagged for inlining = 165, calls inlined = 164, statements flattened = 9996 [2022-11-23 14:37:43,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:43,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:37:43,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:37:43,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:37:43,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:43,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:44,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:44,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:44,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:37:44,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:37:44,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:37:44,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:37:44,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (1/1) ... [2022-11-23 14:37:44,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:44,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:44,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:37:44,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:37:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:37:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:37:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_open [2022-11-23 14:37:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_open [2022-11-23 14:37:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_write [2022-11-23 14:37:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_write [2022-11-23 14:37:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_close [2022-11-23 14:37:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_close [2022-11-23 14:37:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_qp [2022-11-23 14:37:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_qp [2022-11-23 14:37:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 14:37:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 14:37:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure fdget [2022-11-23 14:37:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fdget [2022-11-23 14:37:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-23 14:37:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-23 14:37:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:37:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:37:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:37:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:37:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:37:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:37:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_cq [2022-11-23 14:37:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_cq [2022-11-23 14:37:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure show_ibdev [2022-11-23 14:37:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure show_ibdev [2022-11-23 14:37:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_device [2022-11-23 14:37:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_device [2022-11-23 14:37:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure fd_install [2022-11-23 14:37:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure fd_install [2022-11-23 14:37:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_close [2022-11-23 14:37:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_close [2022-11-23 14:37:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2022-11-23 14:37:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2022-11-23 14:37:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_to_udata [2022-11-23 14:37:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_to_udata [2022-11-23 14:37:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 14:37:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 14:37:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure put_pd_read [2022-11-23 14:37:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pd_read [2022-11-23 14:37:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:37:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:37:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_qp [2022-11-23 14:37:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_qp [2022-11-23 14:37:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 14:37:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 14:37:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_uobj [2022-11-23 14:37:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_uobj [2022-11-23 14:37:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_xrcd [2022-11-23 14:37:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_xrcd [2022-11-23 14:37:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2022-11-23 14:37:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2022-11-23 14:37:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:37:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:37:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:37:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:37:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:37:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:37:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_and_test [2022-11-23 14:37:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_and_test [2022-11-23 14:37:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_pd [2022-11-23 14:37:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_pd [2022-11-23 14:37:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_srq [2022-11-23 14:37:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_srq [2022-11-23 14:37:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-23 14:37:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-23 14:37:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure fdput [2022-11-23 14:37:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fdput [2022-11-23 14:37:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:37:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:37:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_ucq [2022-11-23 14:37:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_ucq [2022-11-23 14:37:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:37:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:37:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:37:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:37:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:37:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:37:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_unmarshall_recv [2022-11-23 14:37:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_unmarshall_recv [2022-11-23 14:37:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure idr_add_uobj [2022-11-23 14:37:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_add_uobj [2022-11-23 14:37:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:37:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:37:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2022-11-23 14:37:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2022-11-23 14:37:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_uobj [2022-11-23 14:37:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_uobj [2022-11-23 14:37:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-23 14:37:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-23 14:37:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:37:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:37:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2022-11-23 14:37:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2022-11-23 14:37:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:37:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:37:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:37:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_poll [2022-11-23 14:37:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_poll [2022-11-23 14:37:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:37:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure __uverbs_create_xsrq [2022-11-23 14:37:44,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __uverbs_create_xsrq [2022-11-23 14:37:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_fasync [2022-11-23 14:37:44,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_fasync [2022-11-23 14:37:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure init_uobj [2022-11-23 14:37:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure init_uobj [2022-11-23 14:37:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure put_xrcd_read [2022-11-23 14:37:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure put_xrcd_read [2022-11-23 14:37:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure copy_query_dev_fields [2022-11-23 14:37:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_query_dev_fields [2022-11-23 14:37:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:37:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_alloc_event_file [2022-11-23 14:37:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_alloc_event_file [2022-11-23 14:37:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-23 14:37:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-23 14:37:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 14:37:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-23 14:37:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-23 14:37:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:37:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:37:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj [2022-11-23 14:37:44,227 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj [2022-11-23 14:37:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-23 14:37:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-23 14:37:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_read [2022-11-23 14:37:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_read [2022-11-23 14:37:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:37:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:37:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:37:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:37:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:37:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:37:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_obj [2022-11-23 14:37:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_obj [2022-11-23 14:37:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_qp [2022-11-23 14:37:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_qp [2022-11-23 14:37:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove_uobj [2022-11-23 14:37:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove_uobj [2022-11-23 14:37:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 14:37:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 14:37:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:37:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:37:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-23 14:37:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-23 14:37:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:37:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:37:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:37:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:37:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-23 14:37:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-23 14:37:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:37:44,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:37:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-23 14:37:44,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-23 14:37:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 14:37:44,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 14:37:44,233 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_read [2022-11-23 14:37:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_read [2022-11-23 14:37:44,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:37:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:37:44,234 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_srq [2022-11-23 14:37:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_srq [2022-11-23 14:37:44,234 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2022-11-23 14:37:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2022-11-23 14:37:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:37:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 14:37:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 14:37:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_search [2022-11-23 14:37:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_search [2022-11-23 14:37:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:37:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:37:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:37:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_mw [2022-11-23 14:37:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_mw [2022-11-23 14:37:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure __idr_get_uobj [2022-11-23 14:37:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __idr_get_uobj [2022-11-23 14:37:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_write [2022-11-23 14:37:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_write [2022-11-23 14:37:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-23 14:37:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-23 14:37:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:37:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure put_srq_read [2022-11-23 14:37:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure put_srq_read [2022-11-23 14:37:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:37:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:37:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-23 14:37:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-23 14:37:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure put_unused_fd [2022-11-23 14:37:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unused_fd [2022-11-23 14:37:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-23 14:37:44,239 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-23 14:37:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure create_cq [2022-11-23 14:37:44,239 INFO L138 BoogieDeclarations]: Found implementation of procedure create_cq [2022-11-23 14:37:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:37:44,239 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:37:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:37:44,239 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:37:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure modify_qp_mask [2022-11-23 14:37:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure modify_qp_mask [2022-11-23 14:37:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-23 14:37:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-23 14:37:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:37:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:37:44,240 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:37:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-23 14:37:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-23 14:37:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-23 14:37:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-23 14:37:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-23 14:37:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-23 14:37:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 14:37:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 14:37:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:37:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:37:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 14:37:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 14:37:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:37:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:37:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:37:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure get_unused_fd_flags [2022-11-23 14:37:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unused_fd_flags [2022-11-23 14:37:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:37:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:37:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:37:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:37:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:37:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_xrcd [2022-11-23 14:37:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_xrcd [2022-11-23 14:37:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:37:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:37:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:37:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:37:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-23 14:37:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-23 14:37:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:37:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure ib_check_mr_access [2022-11-23 14:37:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_check_mr_access [2022-11-23 14:37:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 14:37:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 14:37:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:37:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:37:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:37:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-23 14:37:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-23 14:37:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 14:37:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 14:37:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_flow [2022-11-23 14:37:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_flow [2022-11-23 14:37:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:37:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:37:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get___0 [2022-11-23 14:37:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get___0 [2022-11-23 14:37:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_delete [2022-11-23 14:37:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_delete [2022-11-23 14:37:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2022-11-23 14:37:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2022-11-23 14:37:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-23 14:37:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-23 14:37:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ib_detach_mcast [2022-11-23 14:37:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_detach_mcast [2022-11-23 14:37:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:37:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:37:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_abi_version [2022-11-23 14:37:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_abi_version [2022-11-23 14:37:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:37:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:37:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-23 14:37:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-23 14:37:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_cq [2022-11-23 14:37:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_cq [2022-11-23 14:37:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:37:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:37:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_srq [2022-11-23 14:37:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_srq [2022-11-23 14:37:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-23 14:37:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-23 14:37:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2022-11-23 14:37:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2022-11-23 14:37:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_read [2022-11-23 14:37:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_read [2022-11-23 14:37:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:37:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:37:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-23 14:37:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-23 14:37:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:37:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:37:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-23 14:37:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-23 14:37:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_from_udata [2022-11-23 14:37:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_from_udata [2022-11-23 14:37:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:37:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:37:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_uevent [2022-11-23 14:37:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_uevent [2022-11-23 14:37:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:37:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:37:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure put_cq_read [2022-11-23 14:37:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cq_read [2022-11-23 14:37:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_qp [2022-11-23 14:37:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_qp [2022-11-23 14:37:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:37:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure show_class_attr_string [2022-11-23 14:37:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure show_class_attr_string [2022-11-23 14:37:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-23 14:37:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-23 14:37:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:37:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:37:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-23 14:37:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-23 14:37:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:37:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:37:45,694 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:37:45,698 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:37:46,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:38:14,614 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:38:16,473 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:38:16,473 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:38:16,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:16 BoogieIcfgContainer [2022-11-23 14:38:16,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:38:16,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:38:16,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:38:16,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:38:16,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:37:39" (1/3) ... [2022-11-23 14:38:16,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c411a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:16, skipping insertion in model container [2022-11-23 14:38:16,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:43" (2/3) ... [2022-11-23 14:38:16,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c411a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:16, skipping insertion in model container [2022-11-23 14:38:16,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:16" (3/3) ... [2022-11-23 14:38:16,492 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-23 14:38:16,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:38:16,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:38:16,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:38:16,634 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3794a352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:38:16,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:38:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-23 14:38:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-23 14:38:16,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:16,704 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:16,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1473145426, now seen corresponding path program 1 times [2022-11-23 14:38:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166953746] [2022-11-23 14:38:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2022-11-23 14:38:18,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:18,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166953746] [2022-11-23 14:38:18,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166953746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:18,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:18,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:18,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058957505] [2022-11-23 14:38:18,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:18,459 INFO L87 Difference]: Start difference. First operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 14:38:22,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:24,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:28,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:29,889 INFO L93 Difference]: Finished difference Result 7464 states and 11591 transitions. [2022-11-23 14:38:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:29,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 324 [2022-11-23 14:38:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:29,940 INFO L225 Difference]: With dead ends: 7464 [2022-11-23 14:38:29,940 INFO L226 Difference]: Without dead ends: 4949 [2022-11-23 14:38:29,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:29,965 INFO L413 NwaCegarLoop]: 4355 mSDtfsCounter, 3695 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3697 SdHoareTripleChecker+Valid, 7812 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:29,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3697 Valid, 7812 Invalid, 560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 555 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-23 14:38:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-11-23 14:38:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4941. [2022-11-23 14:38:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 2978 states have (on average 1.3626595030221624) internal successors, (4058), 3109 states have internal predecessors, (4058), 1677 states have call successors, (1677), 286 states have call predecessors, (1677), 285 states have return successors, (1698), 1661 states have call predecessors, (1698), 1675 states have call successors, (1698) [2022-11-23 14:38:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 7433 transitions. [2022-11-23 14:38:30,376 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 7433 transitions. Word has length 324 [2022-11-23 14:38:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:30,381 INFO L495 AbstractCegarLoop]: Abstraction has 4941 states and 7433 transitions. [2022-11-23 14:38:30,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-23 14:38:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 7433 transitions. [2022-11-23 14:38:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-23 14:38:30,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:30,397 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 14:38:30,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:38:30,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1922580438, now seen corresponding path program 1 times [2022-11-23 14:38:30,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:30,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983370780] [2022-11-23 14:38:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-23 14:38:31,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983370780] [2022-11-23 14:38:31,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983370780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:31,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:31,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034075013] [2022-11-23 14:38:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:31,339 INFO L87 Difference]: Start difference. First operand 4941 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:38:32,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:35,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:37,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:41,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:43,564 INFO L93 Difference]: Finished difference Result 14595 states and 22673 transitions. [2022-11-23 14:38:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:43,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 347 [2022-11-23 14:38:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:43,637 INFO L225 Difference]: With dead ends: 14595 [2022-11-23 14:38:43,638 INFO L226 Difference]: Without dead ends: 9715 [2022-11-23 14:38:43,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:43,668 INFO L413 NwaCegarLoop]: 4502 mSDtfsCounter, 3873 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 8062 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:43,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 8062 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 564 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2022-11-23 14:38:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2022-11-23 14:38:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 9682. [2022-11-23 14:38:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9682 states, 5839 states have (on average 1.3644459667751327) internal successors, (7967), 6100 states have internal predecessors, (7967), 3279 states have call successors, (3279), 564 states have call predecessors, (3279), 563 states have return successors, (4042), 3247 states have call predecessors, (4042), 3277 states have call successors, (4042) [2022-11-23 14:38:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 15288 transitions. [2022-11-23 14:38:44,443 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 15288 transitions. Word has length 347 [2022-11-23 14:38:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:44,447 INFO L495 AbstractCegarLoop]: Abstraction has 9682 states and 15288 transitions. [2022-11-23 14:38:44,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:38:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 15288 transitions. [2022-11-23 14:38:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-23 14:38:44,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:44,459 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 14:38:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:38:44,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2068736546, now seen corresponding path program 1 times [2022-11-23 14:38:44,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:44,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472073934] [2022-11-23 14:38:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:44,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-23 14:38:45,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:45,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472073934] [2022-11-23 14:38:45,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472073934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:45,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:45,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627355898] [2022-11-23 14:38:45,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:45,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:45,211 INFO L87 Difference]: Start difference. First operand 9682 states and 15288 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 14:38:47,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:49,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:51,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:54,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:38:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:55,784 INFO L93 Difference]: Finished difference Result 19210 states and 30318 transitions. [2022-11-23 14:38:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:38:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 355 [2022-11-23 14:38:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:55,867 INFO L225 Difference]: With dead ends: 19210 [2022-11-23 14:38:55,867 INFO L226 Difference]: Without dead ends: 9589 [2022-11-23 14:38:55,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:55,919 INFO L413 NwaCegarLoop]: 3471 mSDtfsCounter, 3627 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:55,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 3578 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2022-11-23 14:38:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-11-23 14:38:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 9584. [2022-11-23 14:38:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9584 states, 5760 states have (on average 1.3598958333333333) internal successors, (7833), 6021 states have internal predecessors, (7833), 3256 states have call successors, (3256), 568 states have call predecessors, (3256), 567 states have return successors, (4015), 3224 states have call predecessors, (4015), 3254 states have call successors, (4015) [2022-11-23 14:38:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9584 states to 9584 states and 15104 transitions. [2022-11-23 14:38:56,526 INFO L78 Accepts]: Start accepts. Automaton has 9584 states and 15104 transitions. Word has length 355 [2022-11-23 14:38:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:56,527 INFO L495 AbstractCegarLoop]: Abstraction has 9584 states and 15104 transitions. [2022-11-23 14:38:56,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 14:38:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9584 states and 15104 transitions. [2022-11-23 14:38:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-23 14:38:56,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:56,537 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 14:38:56,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:38:56,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1195439349, now seen corresponding path program 1 times [2022-11-23 14:38:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:56,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486200585] [2022-11-23 14:38:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-23 14:38:57,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:57,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486200585] [2022-11-23 14:38:57,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486200585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:57,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:57,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:57,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200014795] [2022-11-23 14:38:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:57,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:57,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:57,293 INFO L87 Difference]: Start difference. First operand 9584 states and 15104 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:39:01,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:03,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:05,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:06,010 INFO L93 Difference]: Finished difference Result 18703 states and 29421 transitions. [2022-11-23 14:39:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 355 [2022-11-23 14:39:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:06,086 INFO L225 Difference]: With dead ends: 18703 [2022-11-23 14:39:06,086 INFO L226 Difference]: Without dead ends: 9193 [2022-11-23 14:39:06,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:06,132 INFO L413 NwaCegarLoop]: 3355 mSDtfsCounter, 3600 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3603 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:06,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3603 Valid, 3363 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 14:39:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2022-11-23 14:39:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 9183. [2022-11-23 14:39:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9183 states, 5511 states have (on average 1.3572854291417165) internal successors, (7480), 5769 states have internal predecessors, (7480), 3123 states have call successors, (3123), 549 states have call predecessors, (3123), 548 states have return successors, (3797), 3090 states have call predecessors, (3797), 3121 states have call successors, (3797) [2022-11-23 14:39:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9183 states to 9183 states and 14400 transitions. [2022-11-23 14:39:06,810 INFO L78 Accepts]: Start accepts. Automaton has 9183 states and 14400 transitions. Word has length 355 [2022-11-23 14:39:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:06,812 INFO L495 AbstractCegarLoop]: Abstraction has 9183 states and 14400 transitions. [2022-11-23 14:39:06,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:39:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 9183 states and 14400 transitions. [2022-11-23 14:39:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-23 14:39:06,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:06,820 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 14:39:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:39:06,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -92412095, now seen corresponding path program 1 times [2022-11-23 14:39:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:06,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403965282] [2022-11-23 14:39:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-23 14:39:07,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:07,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403965282] [2022-11-23 14:39:07,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403965282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:07,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:07,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808268651] [2022-11-23 14:39:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:07,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:07,405 INFO L87 Difference]: Start difference. First operand 9183 states and 14400 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 14:39:08,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:13,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:15,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:18,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:21,243 INFO L93 Difference]: Finished difference Result 27310 states and 42880 transitions. [2022-11-23 14:39:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:21,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 369 [2022-11-23 14:39:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:21,365 INFO L225 Difference]: With dead ends: 27310 [2022-11-23 14:39:21,365 INFO L226 Difference]: Without dead ends: 18201 [2022-11-23 14:39:21,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:21,414 INFO L413 NwaCegarLoop]: 5893 mSDtfsCounter, 3577 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 9149 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:21,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 9149 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 745 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2022-11-23 14:39:21,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18201 states. [2022-11-23 14:39:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18201 to 18179. [2022-11-23 14:39:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18179 states, 10918 states have (on average 1.3587653416376626) internal successors, (14835), 11435 states have internal predecessors, (14835), 6182 states have call successors, (6182), 1079 states have call predecessors, (6182), 1078 states have return successors, (7532), 6116 states have call predecessors, (7532), 6180 states have call successors, (7532) [2022-11-23 14:39:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18179 states to 18179 states and 28549 transitions. [2022-11-23 14:39:22,707 INFO L78 Accepts]: Start accepts. Automaton has 18179 states and 28549 transitions. Word has length 369 [2022-11-23 14:39:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:22,708 INFO L495 AbstractCegarLoop]: Abstraction has 18179 states and 28549 transitions. [2022-11-23 14:39:22,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 14:39:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 18179 states and 28549 transitions. [2022-11-23 14:39:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-23 14:39:22,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:22,712 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:22,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:39:22,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1393264203, now seen corresponding path program 1 times [2022-11-23 14:39:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:22,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016548944] [2022-11-23 14:39:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2022-11-23 14:39:23,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:23,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016548944] [2022-11-23 14:39:23,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016548944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:23,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:23,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707218675] [2022-11-23 14:39:23,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:23,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:23,540 INFO L87 Difference]: Start difference. First operand 18179 states and 28549 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-23 14:39:25,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:29,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:31,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:34,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:37,037 INFO L93 Difference]: Finished difference Result 45326 states and 71218 transitions. [2022-11-23 14:39:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 398 [2022-11-23 14:39:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:37,206 INFO L225 Difference]: With dead ends: 45326 [2022-11-23 14:39:37,206 INFO L226 Difference]: Without dead ends: 27221 [2022-11-23 14:39:37,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:37,294 INFO L413 NwaCegarLoop]: 6370 mSDtfsCounter, 3498 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 9707 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:37,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 9707 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 761 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2022-11-23 14:39:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27221 states. [2022-11-23 14:39:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27221 to 27199. [2022-11-23 14:39:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27199 states, 16349 states have (on average 1.3592268640283809) internal successors, (22222), 17125 states have internal predecessors, (22222), 9241 states have call successors, (9241), 1609 states have call predecessors, (9241), 1608 states have return successors, (11267), 9142 states have call predecessors, (11267), 9239 states have call successors, (11267) [2022-11-23 14:39:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27199 states to 27199 states and 42730 transitions. [2022-11-23 14:39:39,529 INFO L78 Accepts]: Start accepts. Automaton has 27199 states and 42730 transitions. Word has length 398 [2022-11-23 14:39:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:39,530 INFO L495 AbstractCegarLoop]: Abstraction has 27199 states and 42730 transitions. [2022-11-23 14:39:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-23 14:39:39,531 INFO L276 IsEmpty]: Start isEmpty. Operand 27199 states and 42730 transitions. [2022-11-23 14:39:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-23 14:39:39,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:39,535 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:39:39,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1039464809, now seen corresponding path program 1 times [2022-11-23 14:39:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759443056] [2022-11-23 14:39:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:39,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-23 14:39:41,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759443056] [2022-11-23 14:39:41,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759443056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:41,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:41,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:39:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611500913] [2022-11-23 14:39:41,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:41,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:39:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:39:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:39:41,736 INFO L87 Difference]: Start difference. First operand 27199 states and 42730 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 14:39:43,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:45,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:46,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:53,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:55,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:59,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:02,626 INFO L93 Difference]: Finished difference Result 54306 states and 89032 transitions. [2022-11-23 14:40:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:40:02,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-23 14:40:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:02,779 INFO L225 Difference]: With dead ends: 54306 [2022-11-23 14:40:02,780 INFO L226 Difference]: Without dead ends: 27181 [2022-11-23 14:40:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:40:03,184 INFO L413 NwaCegarLoop]: 3343 mSDtfsCounter, 24 mSDsluCounter, 16661 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 20004 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:03,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 20004 Invalid, 1743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1720 Invalid, 4 Unknown, 0 Unchecked, 19.6s Time] [2022-11-23 14:40:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27181 states. [2022-11-23 14:40:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27181 to 27133. [2022-11-23 14:40:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27133 states, 16349 states have (on average 1.3577588843354333) internal successors, (22198), 17119 states have internal predecessors, (22198), 9151 states have call successors, (9151), 1633 states have call predecessors, (9151), 1632 states have return successors, (11052), 9052 states have call predecessors, (11052), 9149 states have call successors, (11052) [2022-11-23 14:40:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 42401 transitions. [2022-11-23 14:40:05,456 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 42401 transitions. Word has length 414 [2022-11-23 14:40:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:05,457 INFO L495 AbstractCegarLoop]: Abstraction has 27133 states and 42401 transitions. [2022-11-23 14:40:05,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 14:40:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 42401 transitions. [2022-11-23 14:40:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-23 14:40:05,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:05,480 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:40:05,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1100826399, now seen corresponding path program 1 times [2022-11-23 14:40:05,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012816102] [2022-11-23 14:40:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2022-11-23 14:40:06,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012816102] [2022-11-23 14:40:06,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012816102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:06,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:06,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:40:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498580282] [2022-11-23 14:40:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:40:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:06,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:40:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:06,674 INFO L87 Difference]: Start difference. First operand 27133 states and 42401 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-23 14:40:08,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:12,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:14,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:17,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:20,826 INFO L93 Difference]: Finished difference Result 67301 states and 106190 transitions. [2022-11-23 14:40:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:40:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 481 [2022-11-23 14:40:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:21,056 INFO L225 Difference]: With dead ends: 67301 [2022-11-23 14:40:21,057 INFO L226 Difference]: Without dead ends: 40242 [2022-11-23 14:40:21,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:21,170 INFO L413 NwaCegarLoop]: 5354 mSDtfsCounter, 3456 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:21,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 8781 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 683 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-11-23 14:40:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40242 states. [2022-11-23 14:40:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40242 to 40106. [2022-11-23 14:40:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40106 states, 24223 states have (on average 1.3587086653180862) internal successors, (32912), 25362 states have internal predecessors, (32912), 13478 states have call successors, (13478), 2405 states have call predecessors, (13478), 2404 states have return successors, (17322), 13334 states have call predecessors, (17322), 13476 states have call successors, (17322) [2022-11-23 14:40:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40106 states to 40106 states and 63712 transitions. [2022-11-23 14:40:24,183 INFO L78 Accepts]: Start accepts. Automaton has 40106 states and 63712 transitions. Word has length 481 [2022-11-23 14:40:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:24,184 INFO L495 AbstractCegarLoop]: Abstraction has 40106 states and 63712 transitions. [2022-11-23 14:40:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-23 14:40:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 40106 states and 63712 transitions. [2022-11-23 14:40:24,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-23 14:40:24,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:24,194 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:24,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:40:24,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash -674110239, now seen corresponding path program 1 times [2022-11-23 14:40:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:24,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728016609] [2022-11-23 14:40:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2300 trivial. 0 not checked. [2022-11-23 14:40:28,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:28,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728016609] [2022-11-23 14:40:28,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728016609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:28,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783234400] [2022-11-23 14:40:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:28,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:28,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:28,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:28,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:40:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:30,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 5984 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:40:30,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-11-23 14:40:31,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:40:31,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783234400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:31,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:40:31,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-23 14:40:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127606937] [2022-11-23 14:40:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:40:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:40:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:40:31,163 INFO L87 Difference]: Start difference. First operand 40106 states and 63712 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 14:40:32,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:38,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:42,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:46,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:54,309 INFO L93 Difference]: Finished difference Result 120192 states and 190981 transitions. [2022-11-23 14:40:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:40:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 484 [2022-11-23 14:40:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:54,968 INFO L225 Difference]: With dead ends: 120192 [2022-11-23 14:40:54,968 INFO L226 Difference]: Without dead ends: 80043 [2022-11-23 14:40:55,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:40:55,177 INFO L413 NwaCegarLoop]: 6598 mSDtfsCounter, 3523 mSDsluCounter, 16530 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 23128 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:55,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 23128 Invalid, 1870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1858 Invalid, 3 Unknown, 0 Unchecked, 19.5s Time] [2022-11-23 14:40:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80043 states. [2022-11-23 14:40:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80043 to 66563. [2022-11-23 14:40:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66563 states, 40219 states have (on average 1.3583878266490963) internal successors, (54633), 42073 states have internal predecessors, (54633), 22384 states have call successors, (22384), 3960 states have call predecessors, (22384), 3959 states have return successors, (28804), 22130 states have call predecessors, (28804), 22382 states have call successors, (28804) [2022-11-23 14:40:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66563 states to 66563 states and 105821 transitions. [2022-11-23 14:40:59,076 INFO L78 Accepts]: Start accepts. Automaton has 66563 states and 105821 transitions. Word has length 484 [2022-11-23 14:40:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:59,077 INFO L495 AbstractCegarLoop]: Abstraction has 66563 states and 105821 transitions. [2022-11-23 14:40:59,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 14:40:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 66563 states and 105821 transitions. [2022-11-23 14:40:59,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-23 14:40:59,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:59,087 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:59,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:59,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 14:40:59,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1449567867, now seen corresponding path program 1 times [2022-11-23 14:40:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:59,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593174960] [2022-11-23 14:40:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-11-23 14:41:03,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:03,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593174960] [2022-11-23 14:41:03,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593174960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:41:03,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081434838] [2022-11-23 14:41:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:03,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:03,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:03,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:41:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:06,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 6157 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 14:41:06,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 12 proven. 370 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-23 14:41:09,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2322 trivial. 0 not checked. [2022-11-23 14:41:12,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081434838] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 14:41:12,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:41:12,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 12] total 25 [2022-11-23 14:41:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118922164] [2022-11-23 14:41:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:12,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:41:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:41:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:41:12,290 INFO L87 Difference]: Start difference. First operand 66563 states and 105821 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-23 14:41:20,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:26,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:33,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:50,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:10,817 INFO L93 Difference]: Finished difference Result 135850 states and 222154 transitions. [2022-11-23 14:42:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:42:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) Word has length 500 [2022-11-23 14:42:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:11,600 INFO L225 Difference]: With dead ends: 135850 [2022-11-23 14:42:11,600 INFO L226 Difference]: Without dead ends: 135847 [2022-11-23 14:42:11,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 981 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:42:11,650 INFO L413 NwaCegarLoop]: 6765 mSDtfsCounter, 19162 mSDsluCounter, 8756 mSDsCounter, 0 mSdLazyCounter, 12942 mSolverCounterSat, 11943 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19788 SdHoareTripleChecker+Valid, 15521 SdHoareTripleChecker+Invalid, 24888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 11943 IncrementalHoareTripleChecker+Valid, 12942 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:11,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19788 Valid, 15521 Invalid, 24888 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [11943 Valid, 12942 Invalid, 3 Unknown, 0 Unchecked, 51.5s Time] [2022-11-23 14:42:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135847 states. [2022-11-23 14:42:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135847 to 133972. [2022-11-23 14:42:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133972 states, 81033 states have (on average 1.358532943368751) internal successors, (110086), 84700 states have internal predecessors, (110086), 44940 states have call successors, (44940), 7914 states have call predecessors, (44940), 7998 states have return successors, (63952), 44573 states have call predecessors, (63952), 44938 states have call successors, (63952) [2022-11-23 14:42:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133972 states to 133972 states and 218978 transitions. [2022-11-23 14:42:20,956 INFO L78 Accepts]: Start accepts. Automaton has 133972 states and 218978 transitions. Word has length 500 [2022-11-23 14:42:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:20,957 INFO L495 AbstractCegarLoop]: Abstraction has 133972 states and 218978 transitions. [2022-11-23 14:42:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-23 14:42:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 133972 states and 218978 transitions. [2022-11-23 14:42:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-23 14:42:20,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:20,972 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:20,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a962cc7-bed2-4c43-8856-664a79004daa/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:21,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1096031965, now seen corresponding path program 1 times [2022-11-23 14:42:21,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:21,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265781351] [2022-11-23 14:42:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2022-11-23 14:42:25,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265781351] [2022-11-23 14:42:25,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265781351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:25,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:25,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:42:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966522708] [2022-11-23 14:42:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:25,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:42:25,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:42:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:42:25,353 INFO L87 Difference]: Start difference. First operand 133972 states and 218978 transitions. Second operand has 9 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (63), 2 states have call predecessors, (63), 5 states have return successors, (56), 5 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 14:42:27,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:30,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:32,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:40,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:43,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:48,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:58,858 INFO L93 Difference]: Finished difference Result 268470 states and 464048 transitions. [2022-11-23 14:42:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:42:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (63), 2 states have call predecessors, (63), 5 states have return successors, (56), 5 states have call predecessors, (56), 2 states have call successors, (56) Word has length 511 [2022-11-23 14:42:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.