./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-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b01f589d408f6e26ea7a63733affb8614d3f46d7c24e67c8e520356eb639cf0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:43:03,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:43:03,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:43:03,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:43:03,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:43:03,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:43:03,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:43:03,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:43:03,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:43:03,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:43:03,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:43:03,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:43:03,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:43:03,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:43:03,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:43:03,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:43:03,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:43:03,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:43:03,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:43:03,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:43:03,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:43:03,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:43:03,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:43:03,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:43:03,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:43:03,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:43:03,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:43:03,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:43:03,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:43:03,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:43:03,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:43:03,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:43:03,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:43:03,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:43:03,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:43:03,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:43:03,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:43:03,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:43:03,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:43:03,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:43:03,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:43:03,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:43:03,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:43:03,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:43:03,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:43:03,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:43:03,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:43:03,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:43:03,375 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:43:03,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:43:03,376 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:43:03,376 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:43:03,377 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:43:03,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:43:03,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:43:03,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:43:03,378 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:43:03,378 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:43:03,378 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:43:03,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:43:03,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:43:03,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:43:03,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:43:03,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:43:03,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:43:03,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:43:03,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:43:03,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:43:03,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:43:03,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:43:03,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:43:03,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:03,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:43:03,384 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:43:03,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:43:03,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:43:03,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:43:03,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:43:03,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:43:03,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:43:03,385 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_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b01f589d408f6e26ea7a63733affb8614d3f46d7c24e67c8e520356eb639cf0d [2022-11-03 03:43:03,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:43:03,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:43:03,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:43:03,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:43:03,685 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:43:03,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 03:43:03,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/data/ecb4ac057/bb9744e9fccd433083a892996c6a3fe7/FLAGd47a49c30 [2022-11-03 03:43:04,729 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:43:04,729 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 03:43:04,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/data/ecb4ac057/bb9744e9fccd433083a892996c6a3fe7/FLAGd47a49c30 [2022-11-03 03:43:05,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/data/ecb4ac057/bb9744e9fccd433083a892996c6a3fe7 [2022-11-03 03:43:05,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:43:05,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:43:05,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:43:05,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:43:05,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:43:05,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:05" (1/1) ... [2022-11-03 03:43:05,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7b7ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:05, skipping insertion in model container [2022-11-03 03:43:05,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:05" (1/1) ... [2022-11-03 03:43:05,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:43:05,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:43:08,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[472306,472319] [2022-11-03 03:43:08,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:43:08,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:43:09,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[472306,472319] [2022-11-03 03:43:09,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:43:10,067 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:43:10,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10 WrapperNode [2022-11-03 03:43:10,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:43:10,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:43:10,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:43:10,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:43:10,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,592 INFO L138 Inliner]: procedures = 390, calls = 2687, calls flagged for inlining = 203, calls inlined = 169, statements flattened = 6741 [2022-11-03 03:43:10,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:43:10,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:43:10,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:43:10,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:43:10,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:10,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:43:10,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:43:10,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:43:10,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:43:10,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (1/1) ... [2022-11-03 03:43:11,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:11,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:11,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:43:11,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:43:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2022-11-03 03:43:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2022-11-03 03:43:11,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:43:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:43:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2022-11-03 03:43:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2022-11-03 03:43:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 03:43:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 03:43:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:43:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:43:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 03:43:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 03:43:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-03 03:43:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-03 03:43:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2022-11-03 03:43:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2022-11-03 03:43:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2022-11-03 03:43:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2022-11-03 03:43:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:43:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:43:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2022-11-03 03:43:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2022-11-03 03:43:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:43:11,088 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:43:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2022-11-03 03:43:11,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2022-11-03 03:43:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2022-11-03 03:43:11,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2022-11-03 03:43:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2022-11-03 03:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2022-11-03 03:43:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2022-11-03 03:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2022-11-03 03:43:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:43:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:43:11,089 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:43:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:43:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2022-11-03 03:43:11,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2022-11-03 03:43:11,090 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2022-11-03 03:43:11,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2022-11-03 03:43:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-03 03:43:11,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-03 03:43:11,091 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 03:43:11,091 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 03:43:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 03:43:11,092 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 03:43:11,092 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2022-11-03 03:43:11,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2022-11-03 03:43:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:43:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2022-11-03 03:43:11,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2022-11-03 03:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:43:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:43:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2022-11-03 03:43:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2022-11-03 03:43:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:43:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:43:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:43:11,097 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2022-11-03 03:43:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2022-11-03 03:43:11,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:43:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:43:11,098 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2022-11-03 03:43:11,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2022-11-03 03:43:11,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:43:11,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:43:11,098 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2022-11-03 03:43:11,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2022-11-03 03:43:11,099 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2022-11-03 03:43:11,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2022-11-03 03:43:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 03:43:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 03:43:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:43:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:43:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-03 03:43:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-03 03:43:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2022-11-03 03:43:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2022-11-03 03:43:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:43:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:43:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:43:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 03:43:11,102 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 03:43:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:43:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 03:43:11,102 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 03:43:11,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:43:11,103 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:43:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:43:11,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:43:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2022-11-03 03:43:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2022-11-03 03:43:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:43:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:43:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2022-11-03 03:43:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2022-11-03 03:43:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2022-11-03 03:43:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2022-11-03 03:43:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:43:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:43:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2022-11-03 03:43:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2022-11-03 03:43:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:43:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:43:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2022-11-03 03:43:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2022-11-03 03:43:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2022-11-03 03:43:11,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2022-11-03 03:43:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2022-11-03 03:43:11,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2022-11-03 03:43:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2022-11-03 03:43:11,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2022-11-03 03:43:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2022-11-03 03:43:11,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2022-11-03 03:43:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:43:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:43:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 03:43:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 03:43:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:43:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:43:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 03:43:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 03:43:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:43:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:43:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:43:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:43:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2022-11-03 03:43:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2022-11-03 03:43:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:43:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:43:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2022-11-03 03:43:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2022-11-03 03:43:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:43:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:43:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2022-11-03 03:43:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2022-11-03 03:43:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2022-11-03 03:43:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2022-11-03 03:43:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2022-11-03 03:43:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2022-11-03 03:43:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 03:43:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 03:43:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:43:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:43:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2022-11-03 03:43:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2022-11-03 03:43:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 03:43:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 03:43:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:43:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:43:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2022-11-03 03:43:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2022-11-03 03:43:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:43:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:43:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 03:43:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 03:43:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2022-11-03 03:43:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2022-11-03 03:43:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2022-11-03 03:43:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2022-11-03 03:43:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:43:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:43:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:43:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:43:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2022-11-03 03:43:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2022-11-03 03:43:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:43:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:43:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:43:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:43:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:43:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2022-11-03 03:43:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2022-11-03 03:43:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2022-11-03 03:43:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2022-11-03 03:43:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:43:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 03:43:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 03:43:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 03:43:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 03:43:11,129 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2022-11-03 03:43:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2022-11-03 03:43:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:43:11,130 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2022-11-03 03:43:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2022-11-03 03:43:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:43:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:43:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:43:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:43:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:43:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:43:11,131 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 03:43:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 03:43:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2022-11-03 03:43:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2022-11-03 03:43:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:43:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:43:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2022-11-03 03:43:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2022-11-03 03:43:11,132 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2022-11-03 03:43:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2022-11-03 03:43:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:43:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:43:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2022-11-03 03:43:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2022-11-03 03:43:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-11-03 03:43:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-11-03 03:43:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2022-11-03 03:43:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2022-11-03 03:43:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 03:43:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 03:43:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-03 03:43:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-03 03:43:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2022-11-03 03:43:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2022-11-03 03:43:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-03 03:43:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-03 03:43:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2022-11-03 03:43:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2022-11-03 03:43:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:43:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:43:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2022-11-03 03:43:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2022-11-03 03:43:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 03:43:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 03:43:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:43:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2022-11-03 03:43:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2022-11-03 03:43:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:43:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:43:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2022-11-03 03:43:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2022-11-03 03:43:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2022-11-03 03:43:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2022-11-03 03:43:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:43:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:43:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 03:43:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 03:43:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2022-11-03 03:43:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2022-11-03 03:43:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2022-11-03 03:43:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2022-11-03 03:43:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:43:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:43:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2022-11-03 03:43:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2022-11-03 03:43:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 03:43:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2022-11-03 03:43:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:43:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2022-11-03 03:43:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2022-11-03 03:43:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2022-11-03 03:43:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 03:43:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 03:43:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-03 03:43:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-03 03:43:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2022-11-03 03:43:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2022-11-03 03:43:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2022-11-03 03:43:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2022-11-03 03:43:12,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:43:12,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:43:12,831 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:43:24,509 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:43:26,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:43:26,848 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:43:26,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:26 BoogieIcfgContainer [2022-11-03 03:43:26,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:43:26,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:43:26,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:43:26,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:43:26,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:43:05" (1/3) ... [2022-11-03 03:43:26,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3171a45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:26, skipping insertion in model container [2022-11-03 03:43:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:10" (2/3) ... [2022-11-03 03:43:26,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3171a45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:26, skipping insertion in model container [2022-11-03 03:43:26,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:26" (3/3) ... [2022-11-03 03:43:26,865 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 03:43:26,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:43:26,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:43:27,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:43:27,036 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;@15aca0ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:43:27,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:43:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 1739 states, 1048 states have (on average 1.3120229007633588) internal successors, (1375), 1101 states have internal predecessors, (1375), 565 states have call successors, (565), 125 states have call predecessors, (565), 124 states have return successors, (559), 548 states have call predecessors, (559), 559 states have call successors, (559) [2022-11-03 03:43:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:43:27,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:27,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:27,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1179241694, now seen corresponding path program 1 times [2022-11-03 03:43:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:27,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364562048] [2022-11-03 03:43:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:43:28,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:28,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364562048] [2022-11-03 03:43:28,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364562048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:28,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:28,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248214092] [2022-11-03 03:43:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:28,093 INFO L87 Difference]: Start difference. First operand has 1739 states, 1048 states have (on average 1.3120229007633588) internal successors, (1375), 1101 states have internal predecessors, (1375), 565 states have call successors, (565), 125 states have call predecessors, (565), 124 states have return successors, (559), 548 states have call predecessors, (559), 559 states have call successors, (559) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:43:30,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:32,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:35,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:37,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:39,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:40,546 INFO L93 Difference]: Finished difference Result 4787 states and 6964 transitions. [2022-11-03 03:43:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:40,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2022-11-03 03:43:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:40,607 INFO L225 Difference]: With dead ends: 4787 [2022-11-03 03:43:40,607 INFO L226 Difference]: Without dead ends: 3020 [2022-11-03 03:43:40,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:40,641 INFO L413 NwaCegarLoop]: 2599 mSDtfsCounter, 1852 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:40,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 4752 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-11-03 03:43:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-11-03 03:43:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 3016. [2022-11-03 03:43:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1818 states have (on average 1.297029702970297) internal successors, (2358), 1907 states have internal predecessors, (2358), 959 states have call successors, (959), 239 states have call predecessors, (959), 238 states have return successors, (959), 933 states have call predecessors, (959), 956 states have call successors, (959) [2022-11-03 03:43:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 4276 transitions. [2022-11-03 03:43:41,005 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 4276 transitions. Word has length 62 [2022-11-03 03:43:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:41,007 INFO L495 AbstractCegarLoop]: Abstraction has 3016 states and 4276 transitions. [2022-11-03 03:43:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:43:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 4276 transitions. [2022-11-03 03:43:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:41,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:41,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:43:41,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1156917718, now seen corresponding path program 1 times [2022-11-03 03:43:41,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:41,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102928186] [2022-11-03 03:43:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:41,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-03 03:43:41,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:41,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102928186] [2022-11-03 03:43:41,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102928186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:41,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:41,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768630080] [2022-11-03 03:43:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:41,657 INFO L87 Difference]: Start difference. First operand 3016 states and 4276 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:43:43,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:45,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:47,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:51,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:53,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:54,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:57,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:58,072 INFO L93 Difference]: Finished difference Result 6023 states and 8540 transitions. [2022-11-03 03:43:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:43:58,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-11-03 03:43:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:58,097 INFO L225 Difference]: With dead ends: 6023 [2022-11-03 03:43:58,098 INFO L226 Difference]: Without dead ends: 3016 [2022-11-03 03:43:58,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:58,118 INFO L413 NwaCegarLoop]: 2157 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:58,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6467 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 895 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 03:43:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2022-11-03 03:43:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2022-11-03 03:43:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1818 states have (on average 1.295929592959296) internal successors, (2356), 1907 states have internal predecessors, (2356), 959 states have call successors, (959), 239 states have call predecessors, (959), 238 states have return successors, (959), 933 states have call predecessors, (959), 956 states have call successors, (959) [2022-11-03 03:43:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 4274 transitions. [2022-11-03 03:43:58,276 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 4274 transitions. Word has length 122 [2022-11-03 03:43:58,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:58,278 INFO L495 AbstractCegarLoop]: Abstraction has 3016 states and 4274 transitions. [2022-11-03 03:43:58,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:43:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 4274 transitions. [2022-11-03 03:43:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:43:58,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:58,295 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:43:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:43:58,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1545292148, now seen corresponding path program 1 times [2022-11-03 03:43:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:58,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829733128] [2022-11-03 03:43:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 03:43:58,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:58,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829733128] [2022-11-03 03:43:58,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829733128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:58,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:58,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579272339] [2022-11-03 03:43:58,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:58,857 INFO L87 Difference]: Start difference. First operand 3016 states and 4274 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:44:00,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:02,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:06,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:09,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:11,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:13,037 INFO L93 Difference]: Finished difference Result 5787 states and 8432 transitions. [2022-11-03 03:44:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-11-03 03:44:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:13,081 INFO L225 Difference]: With dead ends: 5787 [2022-11-03 03:44:13,081 INFO L226 Difference]: Without dead ends: 5784 [2022-11-03 03:44:13,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:13,086 INFO L413 NwaCegarLoop]: 2940 mSDtfsCounter, 2374 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:13,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 5060 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 627 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-11-03 03:44:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2022-11-03 03:44:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5751. [2022-11-03 03:44:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5751 states, 3494 states have (on average 1.3002289639381797) internal successors, (4543), 3664 states have internal predecessors, (4543), 1797 states have call successors, (1797), 462 states have call predecessors, (1797), 459 states have return successors, (2034), 1735 states have call predecessors, (2034), 1792 states have call successors, (2034) [2022-11-03 03:44:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8374 transitions. [2022-11-03 03:44:13,423 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8374 transitions. Word has length 131 [2022-11-03 03:44:13,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:13,424 INFO L495 AbstractCegarLoop]: Abstraction has 5751 states and 8374 transitions. [2022-11-03 03:44:13,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:44:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8374 transitions. [2022-11-03 03:44:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 03:44:13,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:13,444 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:44:13,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:44:13,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1112090067, now seen corresponding path program 1 times [2022-11-03 03:44:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:13,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598254050] [2022-11-03 03:44:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-03 03:44:14,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:14,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598254050] [2022-11-03 03:44:14,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598254050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:14,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:14,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608460962] [2022-11-03 03:44:14,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:14,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:14,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:14,984 INFO L87 Difference]: Start difference. First operand 5751 states and 8374 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:44:17,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:19,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:22,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:24,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:27,674 INFO L93 Difference]: Finished difference Result 11251 states and 17105 transitions. [2022-11-03 03:44:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-11-03 03:44:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:27,760 INFO L225 Difference]: With dead ends: 11251 [2022-11-03 03:44:27,760 INFO L226 Difference]: Without dead ends: 11248 [2022-11-03 03:44:27,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:27,771 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 2350 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:27,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 4888 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 03:44:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2022-11-03 03:44:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11213. [2022-11-03 03:44:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 6842 states have (on average 1.3026892721426484) internal successors, (8913), 7174 states have internal predecessors, (8913), 3471 states have call successors, (3471), 906 states have call predecessors, (3471), 899 states have return successors, (4661), 3337 states have call predecessors, (4661), 3462 states have call successors, (4661) [2022-11-03 03:44:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 17045 transitions. [2022-11-03 03:44:28,517 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 17045 transitions. Word has length 159 [2022-11-03 03:44:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 11213 states and 17045 transitions. [2022-11-03 03:44:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:44:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 17045 transitions. [2022-11-03 03:44:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-03 03:44:28,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:28,670 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 03:44:28,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:44:28,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1911368726, now seen corresponding path program 1 times [2022-11-03 03:44:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:28,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993151691] [2022-11-03 03:44:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:44:31,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:31,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993151691] [2022-11-03 03:44:31,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993151691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:31,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117960900] [2022-11-03 03:44:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:31,071 INFO L87 Difference]: Start difference. First operand 11213 states and 17045 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:44:33,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:35,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:38,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:40,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:42,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:45,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:45,510 INFO L93 Difference]: Finished difference Result 13994 states and 21655 transitions. [2022-11-03 03:44:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:45,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 203 [2022-11-03 03:44:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:45,606 INFO L225 Difference]: With dead ends: 13994 [2022-11-03 03:44:45,606 INFO L226 Difference]: Without dead ends: 13991 [2022-11-03 03:44:45,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:45,618 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 2329 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 4863 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:45,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 4863 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 591 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2022-11-03 03:44:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2022-11-03 03:44:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13960. [2022-11-03 03:44:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13960 states, 8526 states have (on average 1.3030729533192587) internal successors, (11110), 8937 states have internal predecessors, (11110), 4314 states have call successors, (4314), 1128 states have call predecessors, (4314), 1119 states have return successors, (6175), 4146 states have call predecessors, (6175), 4303 states have call successors, (6175) [2022-11-03 03:44:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13960 states to 13960 states and 21599 transitions. [2022-11-03 03:44:46,615 INFO L78 Accepts]: Start accepts. Automaton has 13960 states and 21599 transitions. Word has length 203 [2022-11-03 03:44:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:46,617 INFO L495 AbstractCegarLoop]: Abstraction has 13960 states and 21599 transitions. [2022-11-03 03:44:46,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:44:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 13960 states and 21599 transitions. [2022-11-03 03:44:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 03:44:46,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:46,664 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-03 03:44:46,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:44:46,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash 721458672, now seen corresponding path program 1 times [2022-11-03 03:44:46,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:46,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147025393] [2022-11-03 03:44:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:46,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:46,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:44:46,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447853321] [2022-11-03 03:44:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:46,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:46,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:46,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:46,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:44:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:48,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3855 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:44:48,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-03 03:44:48,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:48,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147025393] [2022-11-03 03:44:48,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:44:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447853321] [2022-11-03 03:44:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447853321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:48,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:48,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:44:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547416830] [2022-11-03 03:44:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:44:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:44:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:44:48,544 INFO L87 Difference]: Start difference. First operand 13960 states and 21599 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:44:50,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:52,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:57,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:59,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:03,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:04,819 INFO L93 Difference]: Finished difference Result 27975 states and 45617 transitions. [2022-11-03 03:45:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:45:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 217 [2022-11-03 03:45:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:04,923 INFO L225 Difference]: With dead ends: 27975 [2022-11-03 03:45:04,923 INFO L226 Difference]: Without dead ends: 14030 [2022-11-03 03:45:05,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:05,131 INFO L413 NwaCegarLoop]: 2158 mSDtfsCounter, 3 mSDsluCounter, 7350 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8624 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:05,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8624 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1198 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-11-03 03:45:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2022-11-03 03:45:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 14024. [2022-11-03 03:45:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14024 states, 8572 states have (on average 1.3014465702286515) internal successors, (11156), 8991 states have internal predecessors, (11156), 4314 states have call successors, (4314), 1128 states have call predecessors, (4314), 1137 states have return successors, (6229), 4156 states have call predecessors, (6229), 4303 states have call successors, (6229) [2022-11-03 03:45:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14024 states to 14024 states and 21699 transitions. [2022-11-03 03:45:05,976 INFO L78 Accepts]: Start accepts. Automaton has 14024 states and 21699 transitions. Word has length 217 [2022-11-03 03:45:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:05,979 INFO L495 AbstractCegarLoop]: Abstraction has 14024 states and 21699 transitions. [2022-11-03 03:45:05,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:45:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 14024 states and 21699 transitions. [2022-11-03 03:45:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 03:45:06,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:06,026 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-03 03:45:06,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:45:06,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1995009902, now seen corresponding path program 1 times [2022-11-03 03:45:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595137166] [2022-11-03 03:45:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:06,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:45:06,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450243318] [2022-11-03 03:45:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:06,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:06,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:06,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:06,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:45:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:08,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 3877 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:45:08,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 03:45:08,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-03 03:45:09,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595137166] [2022-11-03 03:45:09,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:45:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450243318] [2022-11-03 03:45:09,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450243318] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:45:09,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:45:09,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-03 03:45:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785411516] [2022-11-03 03:45:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:09,160 INFO L87 Difference]: Start difference. First operand 14024 states and 21699 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 03:45:11,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:13,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:16,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:19,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:22,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:24,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:28,429 INFO L93 Difference]: Finished difference Result 30449 states and 53465 transitions. [2022-11-03 03:45:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:28,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 219 [2022-11-03 03:45:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:28,678 INFO L225 Difference]: With dead ends: 30449 [2022-11-03 03:45:28,679 INFO L226 Difference]: Without dead ends: 30446 [2022-11-03 03:45:28,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:28,707 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 3279 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 639 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3599 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:28,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3599 Valid, 4266 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 2556 Invalid, 3 Unknown, 0 Unchecked, 18.0s Time] [2022-11-03 03:45:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30446 states. [2022-11-03 03:45:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30446 to 30306. [2022-11-03 03:45:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30306 states, 18670 states have (on average 1.3116764863417247) internal successors, (24489), 19599 states have internal predecessors, (24489), 9189 states have call successors, (9189), 2228 states have call predecessors, (9189), 2446 states have return successors, (19552), 9055 states have call predecessors, (19552), 9168 states have call successors, (19552) [2022-11-03 03:45:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30306 states to 30306 states and 53230 transitions. [2022-11-03 03:45:31,480 INFO L78 Accepts]: Start accepts. Automaton has 30306 states and 53230 transitions. Word has length 219 [2022-11-03 03:45:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:31,481 INFO L495 AbstractCegarLoop]: Abstraction has 30306 states and 53230 transitions. [2022-11-03 03:45:31,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 03:45:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 30306 states and 53230 transitions. [2022-11-03 03:45:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-03 03:45:31,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:31,637 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:45:31,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:31,863 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1081884232, now seen corresponding path program 1 times [2022-11-03 03:45:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737824858] [2022-11-03 03:45:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:32,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:45:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991645518] [2022-11-03 03:45:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:45:32,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:32,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:45:32,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:45:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 6527 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:45:35,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 03:45:35,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:35,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:35,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737824858] [2022-11-03 03:45:35,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:45:35,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991645518] [2022-11-03 03:45:35,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991645518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:35,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:35,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:45:35,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058855989] [2022-11-03 03:45:35,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:35,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:45:35,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:45:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:45:35,189 INFO L87 Difference]: Start difference. First operand 30306 states and 53230 transitions. Second operand has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (57), 5 states have call predecessors, (57), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 03:45:36,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:38,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:39,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:42,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:45,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:49,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:52,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:55,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:57,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:59,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:02,600 INFO L93 Difference]: Finished difference Result 59647 states and 106685 transitions. [2022-11-03 03:46:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (57), 5 states have call predecessors, (57), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 330 [2022-11-03 03:46:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:02,839 INFO L225 Difference]: With dead ends: 59647 [2022-11-03 03:46:02,839 INFO L226 Difference]: Without dead ends: 29356 [2022-11-03 03:46:03,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:46:03,377 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 31 mSDsluCounter, 12091 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 12753 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:03,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 12753 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1834 Invalid, 5 Unknown, 0 Unchecked, 25.4s Time] [2022-11-03 03:46:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2022-11-03 03:46:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 29356. [2022-11-03 03:46:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29356 states, 18170 states have (on average 1.3097963676389652) internal successors, (23799), 19009 states have internal predecessors, (23799), 8814 states have call successors, (8814), 2168 states have call predecessors, (8814), 2371 states have return successors, (18438), 8745 states have call predecessors, (18438), 8793 states have call successors, (18438) [2022-11-03 03:46:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29356 states to 29356 states and 51051 transitions. [2022-11-03 03:46:05,900 INFO L78 Accepts]: Start accepts. Automaton has 29356 states and 51051 transitions. Word has length 330 [2022-11-03 03:46:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:05,900 INFO L495 AbstractCegarLoop]: Abstraction has 29356 states and 51051 transitions. [2022-11-03 03:46:05,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (57), 5 states have call predecessors, (57), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 03:46:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 29356 states and 51051 transitions. [2022-11-03 03:46:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-03 03:46:06,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:06,040 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:46:06,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:06,263 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash 957961567, now seen corresponding path program 1 times [2022-11-03 03:46:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:06,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920896057] [2022-11-03 03:46:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:06,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:46:06,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515363789] [2022-11-03 03:46:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:06,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:06,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:06,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:46:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:08,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 7041 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:08,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-03 03:46:09,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:09,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:09,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920896057] [2022-11-03 03:46:09,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:46:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515363789] [2022-11-03 03:46:09,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515363789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:09,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:09,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:46:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021896252] [2022-11-03 03:46:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:46:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:46:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:09,033 INFO L87 Difference]: Start difference. First operand 29356 states and 51051 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 03:46:10,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:13,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:17,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:19,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:22,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:27,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:29,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:32,235 INFO L93 Difference]: Finished difference Result 58777 states and 112526 transitions. [2022-11-03 03:46:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:46:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) Word has length 459 [2022-11-03 03:46:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:32,429 INFO L225 Difference]: With dead ends: 58777 [2022-11-03 03:46:32,429 INFO L226 Difference]: Without dead ends: 29436 [2022-11-03 03:46:33,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:33,343 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 2 mSDsluCounter, 7311 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8563 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:33,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8563 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 21.1s Time] [2022-11-03 03:46:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29436 states. [2022-11-03 03:46:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29436 to 29424. [2022-11-03 03:46:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29424 states, 18224 states have (on average 1.3088784021071116) internal successors, (23853), 19057 states have internal predecessors, (23853), 8814 states have call successors, (8814), 2168 states have call predecessors, (8814), 2385 states have return successors, (18452), 8765 states have call predecessors, (18452), 8793 states have call successors, (18452) [2022-11-03 03:46:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29424 states to 29424 states and 51119 transitions. [2022-11-03 03:46:35,283 INFO L78 Accepts]: Start accepts. Automaton has 29424 states and 51119 transitions. Word has length 459 [2022-11-03 03:46:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:35,284 INFO L495 AbstractCegarLoop]: Abstraction has 29424 states and 51119 transitions. [2022-11-03 03:46:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 03:46:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 29424 states and 51119 transitions. [2022-11-03 03:46:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-03 03:46:35,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:35,399 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:35,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 03:46:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:35,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1108269815, now seen corresponding path program 1 times [2022-11-03 03:46:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195211876] [2022-11-03 03:46:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:36,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:36,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195211876] [2022-11-03 03:46:36,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:46:36,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233977934] [2022-11-03 03:46:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:36,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:36,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:36,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:46:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:38,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 6818 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:46:38,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-03 03:46:38,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:38,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233977934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:38,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:38,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675109821] [2022-11-03 03:46:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:38,879 INFO L87 Difference]: Start difference. First operand 29424 states and 51119 transitions. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2022-11-03 03:46:40,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:52,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:55,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:57,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:59,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:02,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:06,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:08,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:12,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:15,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:19,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:30,505 INFO L93 Difference]: Finished difference Result 94687 states and 183158 transitions. [2022-11-03 03:47:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:47:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 469 [2022-11-03 03:47:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:31,445 INFO L225 Difference]: With dead ends: 94687 [2022-11-03 03:47:31,445 INFO L226 Difference]: Without dead ends: 65218 [2022-11-03 03:47:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:32,094 INFO L413 NwaCegarLoop]: 2171 mSDtfsCounter, 3015 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 9024 mSolverCounterSat, 2213 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 11245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2213 IncrementalHoareTripleChecker+Valid, 9024 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:32,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 5295 Invalid, 11245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2213 Valid, 9024 Invalid, 8 Unknown, 0 Unchecked, 46.9s Time] [2022-11-03 03:47:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65218 states. [2022-11-03 03:47:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65218 to 64360. [2022-11-03 03:47:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64360 states, 40202 states have (on average 1.3234167454355505) internal successors, (53204), 42244 states have internal predecessors, (53204), 19197 states have call successors, (19197), 4227 states have call predecessors, (19197), 4960 states have return successors, (53094), 19176 states have call predecessors, (53094), 19136 states have call successors, (53094) [2022-11-03 03:47:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64360 states to 64360 states and 125495 transitions. [2022-11-03 03:47:38,863 INFO L78 Accepts]: Start accepts. Automaton has 64360 states and 125495 transitions. Word has length 469 [2022-11-03 03:47:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:38,864 INFO L495 AbstractCegarLoop]: Abstraction has 64360 states and 125495 transitions. [2022-11-03 03:47:38,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2022-11-03 03:47:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 64360 states and 125495 transitions. [2022-11-03 03:47:39,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-03 03:47:39,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:39,056 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:39,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 03:47:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:47:39,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1082410639, now seen corresponding path program 1 times [2022-11-03 03:47:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:39,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070779222] [2022-11-03 03:47:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:39,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:39,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070779222] [2022-11-03 03:47:39,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:47:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833147589] [2022-11-03 03:47:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:39,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:39,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:39,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:47:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 6816 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:42,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-03 03:47:42,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:42,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833147589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:42,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:42,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741924258] [2022-11-03 03:47:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:42,570 INFO L87 Difference]: Start difference. First operand 64360 states and 125495 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2022-11-03 03:47:44,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:57,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:00,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:06,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:09,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:25,772 INFO L93 Difference]: Finished difference Result 130533 states and 279902 transitions. [2022-11-03 03:48:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:48:25,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 467 [2022-11-03 03:48:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:26,564 INFO L225 Difference]: With dead ends: 130533 [2022-11-03 03:48:26,565 INFO L226 Difference]: Without dead ends: 66128 [2022-11-03 03:48:28,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:48:28,209 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 3026 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 8553 mSolverCounterSat, 2218 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2218 IncrementalHoareTripleChecker+Valid, 8553 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:28,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3521 Valid, 4928 Invalid, 10775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2218 Valid, 8553 Invalid, 4 Unknown, 0 Unchecked, 36.3s Time] [2022-11-03 03:48:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66128 states. [2022-11-03 03:48:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66128 to 64710. [2022-11-03 03:48:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64710 states, 40412 states have (on average 1.3244580817578937) internal successors, (53524), 42534 states have internal predecessors, (53524), 19277 states have call successors, (19277), 4227 states have call predecessors, (19277), 5020 states have return successors, (62606), 19266 states have call predecessors, (62606), 19216 states have call successors, (62606) [2022-11-03 03:48:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64710 states to 64710 states and 135407 transitions. [2022-11-03 03:48:35,512 INFO L78 Accepts]: Start accepts. Automaton has 64710 states and 135407 transitions. Word has length 467 [2022-11-03 03:48:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:35,513 INFO L495 AbstractCegarLoop]: Abstraction has 64710 states and 135407 transitions. [2022-11-03 03:48:35,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 5 states have internal predecessors, (221), 4 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2022-11-03 03:48:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 64710 states and 135407 transitions. [2022-11-03 03:48:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-03 03:48:35,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:35,707 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:48:35,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:48:35,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 606093024, now seen corresponding path program 1 times [2022-11-03 03:48:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502560840] [2022-11-03 03:48:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:36,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:48:36,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206582152] [2022-11-03 03:48:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:36,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:36,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:36,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:36,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5157c40e-9d6b-41fb-be1c-9cba14ef1dda/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:48:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:38,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 5881 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:48:38,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-03 03:48:39,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:39,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:39,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502560840] [2022-11-03 03:48:39,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:48:39,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206582152] [2022-11-03 03:48:39,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206582152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:39,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:39,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:48:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184777353] [2022-11-03 03:48:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:39,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:48:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:48:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:48:39,278 INFO L87 Difference]: Start difference. First operand 64710 states and 135407 transitions. Second operand has 15 states, 12 states have (on average 14.333333333333334) internal successors, (172), 11 states have internal predecessors, (172), 2 states have call successors, (52), 2 states have call predecessors, (52), 6 states have return successors, (50), 6 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 03:48:41,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:50,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:53,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:55,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:57,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:59,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:02,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:04,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:09,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:12,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:13,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:15,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:17,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:19,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:21,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:23,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:25,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:28,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:29,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:31,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:36,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:45,802 INFO L93 Difference]: Finished difference Result 129721 states and 309034 transitions. [2022-11-03 03:49:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:49:45,803 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 14.333333333333334) internal successors, (172), 11 states have internal predecessors, (172), 2 states have call successors, (52), 2 states have call predecessors, (52), 6 states have return successors, (50), 6 states have call predecessors, (50), 2 states have call successors, (50) Word has length 365 [2022-11-03 03:49:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:46,440 INFO L225 Difference]: With dead ends: 129721 [2022-11-03 03:49:46,440 INFO L226 Difference]: Without dead ends: 65026 [2022-11-03 03:49:49,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:49:49,201 INFO L413 NwaCegarLoop]: 2149 mSDtfsCounter, 10 mSDsluCounter, 31694 mSDsCounter, 0 mSdLazyCounter, 4280 mSolverCounterSat, 3 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30040 SdHoareTripleChecker+Invalid, 4296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4280 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:49,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 30040 Invalid, 4296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 4280 Invalid, 13 Unknown, 0 Unchecked, 59.0s Time] [2022-11-03 03:49:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65026 states. [2022-11-03 03:49:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65026 to 64866. [2022-11-03 03:49:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64866 states, 40522 states have (on average 1.3235773160258626) internal successors, (53634), 42628 states have internal predecessors, (53634), 19277 states have call successors, (19277), 4227 states have call predecessors, (19277), 5066 states have return successors, (62786), 19328 states have call predecessors, (62786), 19216 states have call successors, (62786)