./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/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_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/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_8fed6356-b963-456f-93f1-beba46d8cb0b/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 0408b8dd1e50dba1d05ee8137dbd65dd8b8c61dcceb5e60c09fc08110798cce8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:22:08,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:22:08,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:22:08,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:22:08,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:22:08,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:22:08,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:22:08,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:22:08,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:22:08,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:22:08,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:22:08,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:22:08,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:22:08,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:22:08,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:22:08,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:22:08,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:22:08,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:22:08,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:22:08,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:22:08,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:22:08,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:22:08,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:22:08,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:22:08,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:22:08,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:22:08,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:22:08,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:22:08,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:22:08,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:22:08,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:22:08,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:22:08,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:22:08,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:22:08,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:22:08,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:22:08,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:22:08,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:22:08,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:22:08,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:22:08,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:22:08,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:22:08,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:22:08,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:22:08,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:22:08,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:22:08,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:22:08,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:22:08,421 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:22:08,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:22:08,422 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:22:08,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:22:08,423 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:22:08,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:22:08,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:22:08,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:22:08,424 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:22:08,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:22:08,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:22:08,425 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:22:08,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:22:08,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:22:08,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:22:08,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:22:08,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:22:08,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:22:08,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:22:08,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:22:08,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:22:08,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:22:08,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:22:08,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:08,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:22:08,430 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:22:08,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:22:08,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:22:08,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:22:08,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:22:08,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:22:08,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:22:08,432 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_8fed6356-b963-456f-93f1-beba46d8cb0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0408b8dd1e50dba1d05ee8137dbd65dd8b8c61dcceb5e60c09fc08110798cce8 [2022-11-03 02:22:08,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:22:08,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:22:08,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:22:08,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:22:08,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:22:08,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2022-11-03 02:22:08,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/data/ff0d01aa7/b296e878d07543b893d41b3a804a6f15/FLAG96dbe3d69 [2022-11-03 02:22:09,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:22:09,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2022-11-03 02:22:09,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/data/ff0d01aa7/b296e878d07543b893d41b3a804a6f15/FLAG96dbe3d69 [2022-11-03 02:22:10,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/data/ff0d01aa7/b296e878d07543b893d41b3a804a6f15 [2022-11-03 02:22:10,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:22:10,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:22:10,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:10,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:22:10,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:22:10,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:10" (1/1) ... [2022-11-03 02:22:10,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77553f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:10, skipping insertion in model container [2022-11-03 02:22:10,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:10" (1/1) ... [2022-11-03 02:22:10,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:22:10,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:22:11,170 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_8fed6356-b963-456f-93f1-beba46d8cb0b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i[149470,149483] [2022-11-03 02:22:11,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:11,453 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:22:11,569 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_8fed6356-b963-456f-93f1-beba46d8cb0b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i[149470,149483] [2022-11-03 02:22:11,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:11,848 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:22:11,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11 WrapperNode [2022-11-03 02:22:11,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:11,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:11,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:22:11,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:22:11,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:11,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:11,948 INFO L138 Inliner]: procedures = 88, calls = 403, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1034 [2022-11-03 02:22:11,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:11,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:22:11,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:22:11,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:22:11,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:11,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:11,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:11,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:22:12,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:22:12,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:22:12,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:22:12,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (1/1) ... [2022-11-03 02:22:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:12,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:22:12,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:22:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-11-03 02:22:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-11-03 02:22:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:22:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2022-11-03 02:22:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2022-11-03 02:22:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:22:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:22:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:22:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:22:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:22:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:22:12,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:22:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:22:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:22:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 02:22:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 02:22:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:22:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:22:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:22:12,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:22:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2022-11-03 02:22:12,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2022-11-03 02:22:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:22:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:22:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 02:22:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 02:22:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2022-11-03 02:22:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2022-11-03 02:22:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:22:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:22:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:22:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:22:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:22:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:22:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:22:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:22:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:22:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:22:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:22:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:22:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:22:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:22:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:22:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:22:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:22:12,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:22:12,529 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:22:12,944 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:22:14,099 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:22:14,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:22:14,440 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:22:14,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:22:14 BoogieIcfgContainer [2022-11-03 02:22:14,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:22:14,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:22:14,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:22:14,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:22:14,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:22:10" (1/3) ... [2022-11-03 02:22:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b71aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:22:14, skipping insertion in model container [2022-11-03 02:22:14,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:11" (2/3) ... [2022-11-03 02:22:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b71aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:22:14, skipping insertion in model container [2022-11-03 02:22:14,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:22:14" (3/3) ... [2022-11-03 02:22:14,451 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point.cil.out.i [2022-11-03 02:22:14,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:22:14,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:22:14,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:22:14,560 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;@383f2df9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:22:14,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:22:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 148 states have (on average 1.445945945945946) internal successors, (214), 153 states have internal predecessors, (214), 45 states have call successors, (45), 16 states have call predecessors, (45), 15 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 02:22:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:22:14,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:14,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:14,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash 875927867, now seen corresponding path program 1 times [2022-11-03 02:22:14,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:14,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323733098] [2022-11-03 02:22:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:15,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323733098] [2022-11-03 02:22:15,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323733098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:15,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:15,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045455974] [2022-11-03 02:22:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:15,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:15,186 INFO L87 Difference]: Start difference. First operand has 210 states, 148 states have (on average 1.445945945945946) internal successors, (214), 153 states have internal predecessors, (214), 45 states have call successors, (45), 16 states have call predecessors, (45), 15 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:22:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:16,390 INFO L93 Difference]: Finished difference Result 608 states and 887 transitions. [2022-11-03 02:22:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-03 02:22:16,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:16,405 INFO L225 Difference]: With dead ends: 608 [2022-11-03 02:22:16,406 INFO L226 Difference]: Without dead ends: 392 [2022-11-03 02:22:16,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:16,414 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 268 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:16,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 532 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:22:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-03 02:22:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-11-03 02:22:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 283 states have (on average 1.392226148409894) internal successors, (394), 283 states have internal predecessors, (394), 80 states have call successors, (80), 29 states have call predecessors, (80), 28 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-11-03 02:22:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 553 transitions. [2022-11-03 02:22:16,504 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 553 transitions. Word has length 18 [2022-11-03 02:22:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:16,505 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 553 transitions. [2022-11-03 02:22:16,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:22:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 553 transitions. [2022-11-03 02:22:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:22:16,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:16,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:22:16,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 143795508, now seen corresponding path program 1 times [2022-11-03 02:22:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:16,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399620451] [2022-11-03 02:22:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:16,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:16,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399620451] [2022-11-03 02:22:16,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399620451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:16,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:16,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:22:16,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741663033] [2022-11-03 02:22:16,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:16,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:22:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:22:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:22:16,882 INFO L87 Difference]: Start difference. First operand 392 states and 553 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:22:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:18,483 INFO L93 Difference]: Finished difference Result 780 states and 1112 transitions. [2022-11-03 02:22:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:22:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-03 02:22:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:18,501 INFO L225 Difference]: With dead ends: 780 [2022-11-03 02:22:18,501 INFO L226 Difference]: Without dead ends: 775 [2022-11-03 02:22:18,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:22:18,509 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 270 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:18,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 827 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:22:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-03 02:22:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 767. [2022-11-03 02:22:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 552 states have (on average 1.391304347826087) internal successors, (768), 552 states have internal predecessors, (768), 158 states have call successors, (158), 57 states have call predecessors, (158), 56 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2022-11-03 02:22:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1095 transitions. [2022-11-03 02:22:18,621 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1095 transitions. Word has length 21 [2022-11-03 02:22:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:18,622 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1095 transitions. [2022-11-03 02:22:18,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:22:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1095 transitions. [2022-11-03 02:22:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:22:18,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:18,635 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:22:18,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:22:18,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -559686897, now seen corresponding path program 1 times [2022-11-03 02:22:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:18,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484452193] [2022-11-03 02:22:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:22:18,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:18,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484452193] [2022-11-03 02:22:18,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484452193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:18,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:18,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706333711] [2022-11-03 02:22:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:18,817 INFO L87 Difference]: Start difference. First operand 767 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:22:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:19,511 INFO L93 Difference]: Finished difference Result 1599 states and 2280 transitions. [2022-11-03 02:22:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:19,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2022-11-03 02:22:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:19,519 INFO L225 Difference]: With dead ends: 1599 [2022-11-03 02:22:19,520 INFO L226 Difference]: Without dead ends: 836 [2022-11-03 02:22:19,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:19,525 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 37 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 471 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:22:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-03 02:22:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 831. [2022-11-03 02:22:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 613 states have (on average 1.3931484502446982) internal successors, (854), 613 states have internal predecessors, (854), 159 states have call successors, (159), 59 states have call predecessors, (159), 58 states have return successors, (170), 158 states have call predecessors, (170), 158 states have call successors, (170) [2022-11-03 02:22:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1183 transitions. [2022-11-03 02:22:19,599 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1183 transitions. Word has length 62 [2022-11-03 02:22:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:19,600 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1183 transitions. [2022-11-03 02:22:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:22:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1183 transitions. [2022-11-03 02:22:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:22:19,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:19,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:22:19,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1776300723, now seen corresponding path program 1 times [2022-11-03 02:22:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:19,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515560167] [2022-11-03 02:22:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:22:20,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:20,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515560167] [2022-11-03 02:22:20,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515560167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:20,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:20,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:22:20,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690839768] [2022-11-03 02:22:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:22:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:22:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:22:20,180 INFO L87 Difference]: Start difference. First operand 831 states and 1183 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:22:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:21,596 INFO L93 Difference]: Finished difference Result 1676 states and 2404 transitions. [2022-11-03 02:22:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:22:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2022-11-03 02:22:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:21,602 INFO L225 Difference]: With dead ends: 1676 [2022-11-03 02:22:21,602 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 02:22:21,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:22:21,606 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 2 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:21,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:22:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 02:22:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 851. [2022-11-03 02:22:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 627 states have (on average 1.3843700159489634) internal successors, (868), 629 states have internal predecessors, (868), 159 states have call successors, (159), 59 states have call predecessors, (159), 64 states have return successors, (180), 162 states have call predecessors, (180), 158 states have call successors, (180) [2022-11-03 02:22:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1207 transitions. [2022-11-03 02:22:21,661 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1207 transitions. Word has length 84 [2022-11-03 02:22:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:21,662 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1207 transitions. [2022-11-03 02:22:21,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:22:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1207 transitions. [2022-11-03 02:22:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:22:21,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:21,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:21,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:22:21,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1419067642, now seen corresponding path program 1 times [2022-11-03 02:22:21,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:21,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817773745] [2022-11-03 02:22:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:21,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:22:22,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:22,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817773745] [2022-11-03 02:22:22,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817773745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:22,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:22,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:22:22,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765141008] [2022-11-03 02:22:22,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:22,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:22:22,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:22,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:22:22,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:22:22,199 INFO L87 Difference]: Start difference. First operand 851 states and 1207 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:22:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:24,711 INFO L93 Difference]: Finished difference Result 1720 states and 2458 transitions. [2022-11-03 02:22:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:22:24,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-11-03 02:22:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:24,719 INFO L225 Difference]: With dead ends: 1720 [2022-11-03 02:22:24,720 INFO L226 Difference]: Without dead ends: 881 [2022-11-03 02:22:24,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:22:24,727 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 10 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:24,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1940 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:22:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-03 02:22:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 871. [2022-11-03 02:22:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 641 states have (on average 1.3697347893915757) internal successors, (878), 643 states have internal predecessors, (878), 161 states have call successors, (161), 59 states have call predecessors, (161), 68 states have return successors, (188), 168 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-03 02:22:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1227 transitions. [2022-11-03 02:22:24,788 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1227 transitions. Word has length 88 [2022-11-03 02:22:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:24,790 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1227 transitions. [2022-11-03 02:22:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:22:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1227 transitions. [2022-11-03 02:22:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:22:24,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:24,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:24,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1548826003, now seen corresponding path program 1 times [2022-11-03 02:22:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919743908] [2022-11-03 02:22:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:22:25,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919743908] [2022-11-03 02:22:25,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919743908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:25,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:25,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731929274] [2022-11-03 02:22:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:25,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:25,278 INFO L87 Difference]: Start difference. First operand 871 states and 1227 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:22:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:26,060 INFO L93 Difference]: Finished difference Result 1731 states and 2442 transitions. [2022-11-03 02:22:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-03 02:22:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:26,065 INFO L225 Difference]: With dead ends: 1731 [2022-11-03 02:22:26,065 INFO L226 Difference]: Without dead ends: 872 [2022-11-03 02:22:26,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:26,069 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:26,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:22:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-03 02:22:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-03 02:22:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 642 states have (on average 1.3691588785046729) internal successors, (879), 644 states have internal predecessors, (879), 161 states have call successors, (161), 59 states have call predecessors, (161), 68 states have return successors, (188), 168 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-03 02:22:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1228 transitions. [2022-11-03 02:22:26,112 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1228 transitions. Word has length 90 [2022-11-03 02:22:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:26,112 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1228 transitions. [2022-11-03 02:22:26,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:22:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1228 transitions. [2022-11-03 02:22:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:22:26,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:26,121 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:26,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:22:26,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash -130722288, now seen corresponding path program 1 times [2022-11-03 02:22:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:26,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507205578] [2022-11-03 02:22:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:22:27,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:27,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507205578] [2022-11-03 02:22:27,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507205578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:27,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:27,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:22:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701404576] [2022-11-03 02:22:27,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:22:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:22:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:22:27,613 INFO L87 Difference]: Start difference. First operand 872 states and 1228 transitions. Second operand has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:22:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:34,623 INFO L93 Difference]: Finished difference Result 2070 states and 2971 transitions. [2022-11-03 02:22:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:22:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2022-11-03 02:22:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:34,631 INFO L225 Difference]: With dead ends: 2070 [2022-11-03 02:22:34,632 INFO L226 Difference]: Without dead ends: 1211 [2022-11-03 02:22:34,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:22:34,636 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 92 mSDsluCounter, 4652 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:34,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 4311 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 02:22:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-11-03 02:22:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 888. [2022-11-03 02:22:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 654 states have (on average 1.3623853211009174) internal successors, (891), 654 states have internal predecessors, (891), 163 states have call successors, (163), 59 states have call predecessors, (163), 70 states have return successors, (194), 174 states have call predecessors, (194), 162 states have call successors, (194) [2022-11-03 02:22:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1248 transitions. [2022-11-03 02:22:34,713 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1248 transitions. Word has length 91 [2022-11-03 02:22:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:34,715 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1248 transitions. [2022-11-03 02:22:34,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:22:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1248 transitions. [2022-11-03 02:22:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:22:34,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:34,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:34,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:22:34,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:34,722 INFO L85 PathProgramCache]: Analyzing trace with hash -915730903, now seen corresponding path program 1 times [2022-11-03 02:22:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:34,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104278537] [2022-11-03 02:22:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 02:22:36,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:36,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104278537] [2022-11-03 02:22:36,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104278537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:36,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:36,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:22:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560704856] [2022-11-03 02:22:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:22:36,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:22:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:22:36,618 INFO L87 Difference]: Start difference. First operand 888 states and 1248 transitions. Second operand has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:22:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:41,032 INFO L93 Difference]: Finished difference Result 1805 states and 2543 transitions. [2022-11-03 02:22:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:22:41,033 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-11-03 02:22:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:41,039 INFO L225 Difference]: With dead ends: 1805 [2022-11-03 02:22:41,039 INFO L226 Difference]: Without dead ends: 930 [2022-11-03 02:22:41,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:22:41,043 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 16 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:41,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2895 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:22:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-03 02:22:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 896. [2022-11-03 02:22:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 662 states have (on average 1.3580060422960725) internal successors, (899), 658 states have internal predecessors, (899), 163 states have call successors, (163), 59 states have call predecessors, (163), 70 states have return successors, (194), 178 states have call predecessors, (194), 162 states have call successors, (194) [2022-11-03 02:22:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1256 transitions. [2022-11-03 02:22:41,104 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1256 transitions. Word has length 95 [2022-11-03 02:22:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:41,106 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1256 transitions. [2022-11-03 02:22:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:22:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1256 transitions. [2022-11-03 02:22:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:22:41,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:41,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:22:41,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1453181594, now seen corresponding path program 1 times [2022-11-03 02:22:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:41,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95208760] [2022-11-03 02:22:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:22:41,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95208760] [2022-11-03 02:22:41,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95208760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:41,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:41,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066654790] [2022-11-03 02:22:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:41,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:41,289 INFO L87 Difference]: Start difference. First operand 896 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:22:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:42,559 INFO L93 Difference]: Finished difference Result 1352 states and 1904 transitions. [2022-11-03 02:22:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 96 [2022-11-03 02:22:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:42,565 INFO L225 Difference]: With dead ends: 1352 [2022-11-03 02:22:42,566 INFO L226 Difference]: Without dead ends: 904 [2022-11-03 02:22:42,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:42,568 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 4 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:42,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 474 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:22:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-03 02:22:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2022-11-03 02:22:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 668 states have (on average 1.3547904191616766) internal successors, (905), 666 states have internal predecessors, (905), 163 states have call successors, (163), 59 states have call predecessors, (163), 72 states have return successors, (196), 178 states have call predecessors, (196), 162 states have call successors, (196) [2022-11-03 02:22:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1264 transitions. [2022-11-03 02:22:42,635 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1264 transitions. Word has length 96 [2022-11-03 02:22:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:42,636 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1264 transitions. [2022-11-03 02:22:42,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:22:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1264 transitions. [2022-11-03 02:22:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:22:42,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:42,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:22:42,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1302252283, now seen corresponding path program 1 times [2022-11-03 02:22:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:42,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521204236] [2022-11-03 02:22:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:22:43,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:43,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521204236] [2022-11-03 02:22:43,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521204236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:43,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:43,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:22:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817461867] [2022-11-03 02:22:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:22:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:22:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:22:43,169 INFO L87 Difference]: Start difference. First operand 904 states and 1264 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:22:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:46,327 INFO L93 Difference]: Finished difference Result 1837 states and 2571 transitions. [2022-11-03 02:22:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:22:46,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-11-03 02:22:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:46,334 INFO L225 Difference]: With dead ends: 1837 [2022-11-03 02:22:46,334 INFO L226 Difference]: Without dead ends: 946 [2022-11-03 02:22:46,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:22:46,338 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 473 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:46,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 822 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 02:22:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-03 02:22:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 914. [2022-11-03 02:22:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 674 states have (on average 1.3427299703264095) internal successors, (905), 672 states have internal predecessors, (905), 165 states have call successors, (165), 59 states have call predecessors, (165), 74 states have return successors, (196), 182 states have call predecessors, (196), 164 states have call successors, (196) [2022-11-03 02:22:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1266 transitions. [2022-11-03 02:22:46,457 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1266 transitions. Word has length 97 [2022-11-03 02:22:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:46,458 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1266 transitions. [2022-11-03 02:22:46,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 02:22:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1266 transitions. [2022-11-03 02:22:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:22:46,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:46,461 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-03 02:22:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:22:46,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:46,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1574238282, now seen corresponding path program 1 times [2022-11-03 02:22:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:46,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396398031] [2022-11-03 02:22:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:22:46,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:46,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396398031] [2022-11-03 02:22:46,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396398031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:46,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:46,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674372810] [2022-11-03 02:22:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:46,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:46,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:46,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:46,785 INFO L87 Difference]: Start difference. First operand 914 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:22:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:48,022 INFO L93 Difference]: Finished difference Result 2108 states and 2975 transitions. [2022-11-03 02:22:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:48,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-11-03 02:22:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:48,030 INFO L225 Difference]: With dead ends: 2108 [2022-11-03 02:22:48,031 INFO L226 Difference]: Without dead ends: 1207 [2022-11-03 02:22:48,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:48,035 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 82 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:48,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 567 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:22:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-03 02:22:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 906. [2022-11-03 02:22:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 670 states have (on average 1.3388059701492536) internal successors, (897), 668 states have internal predecessors, (897), 161 states have call successors, (161), 59 states have call predecessors, (161), 74 states have return successors, (192), 178 states have call predecessors, (192), 160 states have call successors, (192) [2022-11-03 02:22:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1250 transitions. [2022-11-03 02:22:48,109 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1250 transitions. Word has length 116 [2022-11-03 02:22:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:48,110 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1250 transitions. [2022-11-03 02:22:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:22:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1250 transitions. [2022-11-03 02:22:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:22:48,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:48,114 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-03 02:22:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:22:48,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1724188082, now seen corresponding path program 1 times [2022-11-03 02:22:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:48,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950123904] [2022-11-03 02:22:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:22:48,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:48,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950123904] [2022-11-03 02:22:48,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950123904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:48,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:48,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:22:48,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899341944] [2022-11-03 02:22:48,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:48,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:22:48,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:22:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:22:48,679 INFO L87 Difference]: Start difference. First operand 906 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:22:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:51,202 INFO L93 Difference]: Finished difference Result 2112 states and 2983 transitions. [2022-11-03 02:22:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:22:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-03 02:22:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:51,210 INFO L225 Difference]: With dead ends: 2112 [2022-11-03 02:22:51,211 INFO L226 Difference]: Without dead ends: 1219 [2022-11-03 02:22:51,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:22:51,215 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 85 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:51,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1195 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:22:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-11-03 02:22:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 918. [2022-11-03 02:22:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 678 states have (on average 1.3466076696165192) internal successors, (913), 680 states have internal predecessors, (913), 161 states have call successors, (161), 59 states have call predecessors, (161), 78 states have return successors, (200), 178 states have call predecessors, (200), 160 states have call successors, (200) [2022-11-03 02:22:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1274 transitions. [2022-11-03 02:22:51,295 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1274 transitions. Word has length 116 [2022-11-03 02:22:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:51,296 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1274 transitions. [2022-11-03 02:22:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 02:22:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1274 transitions. [2022-11-03 02:22:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:22:51,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:51,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-03 02:22:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:22:51,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -318579255, now seen corresponding path program 1 times [2022-11-03 02:22:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397957647] [2022-11-03 02:22:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:22:51,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397957647] [2022-11-03 02:22:51,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397957647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:51,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260352426] [2022-11-03 02:22:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:51,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:51,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:51,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:51,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:22:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:52,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:22:52,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:22:52,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:22:52,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260352426] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:52,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:22:52,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-11-03 02:22:52,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694546330] [2022-11-03 02:22:52,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:22:52,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:22:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:22:52,962 INFO L87 Difference]: Start difference. First operand 918 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:22:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:54,151 INFO L93 Difference]: Finished difference Result 1835 states and 2569 transitions. [2022-11-03 02:22:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:22:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-03 02:22:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:54,158 INFO L225 Difference]: With dead ends: 1835 [2022-11-03 02:22:54,158 INFO L226 Difference]: Without dead ends: 930 [2022-11-03 02:22:54,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:22:54,162 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 2 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:54,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 466 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:22:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-03 02:22:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 922. [2022-11-03 02:22:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 682 states have (on average 1.344574780058651) internal successors, (917), 684 states have internal predecessors, (917), 161 states have call successors, (161), 59 states have call predecessors, (161), 78 states have return successors, (200), 178 states have call predecessors, (200), 160 states have call successors, (200) [2022-11-03 02:22:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1278 transitions. [2022-11-03 02:22:54,242 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1278 transitions. Word has length 117 [2022-11-03 02:22:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:54,243 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1278 transitions. [2022-11-03 02:22:54,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:22:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1278 transitions. [2022-11-03 02:22:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:22:54,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:54,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-03 02:22:54,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:54,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:54,477 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -719785516, now seen corresponding path program 1 times [2022-11-03 02:22:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:54,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350648280] [2022-11-03 02:22:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:22:55,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:55,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350648280] [2022-11-03 02:22:55,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350648280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:55,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317020298] [2022-11-03 02:22:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:55,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:55,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fed6356-b963-456f-93f1-beba46d8cb0b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:22:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:56,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:22:56,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:22:56,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:22:56,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317020298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [199356918] [2022-11-03 02:22:56,564 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-03 02:22:56,564 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:22:56,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:22:56,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:22:56,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:22:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:57,268 INFO L244 Elim1Store]: Index analysis took 122 ms [2022-11-03 02:22:58,276 INFO L356 Elim1Store]: treesize reduction 300, result has 47.5 percent of original size [2022-11-03 02:22:58,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 467 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 30 case distinctions, treesize of input 162 treesize of output 374 [2022-11-03 02:22:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,883 INFO L356 Elim1Store]: treesize reduction 540, result has 33.4 percent of original size [2022-11-03 02:22:59,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 33 select indices, 33 select index equivalence classes, 498 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 60 case distinctions, treesize of input 172 treesize of output 385 [2022-11-03 02:23:00,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2022-11-03 02:23:00,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2022-11-03 02:23:00,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 02:23:00,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:23:00,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:23:01,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:01,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:01,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 31 select indices, 31 select index equivalence classes, 109 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 94 [2022-11-03 02:23:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:01,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 497 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-03 02:23:01,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:01,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:23:02,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:02,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 497 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-03 02:23:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:02,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:23:02,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:02,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:02,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 31 select indices, 31 select index equivalence classes, 109 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 94 [2022-11-03 02:23:03,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:03,545 INFO L356 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-11-03 02:23:03,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 642 treesize of output 625 [2022-11-03 02:23:03,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2022-11-03 02:23:03,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:03,695 INFO L356 Elim1Store]: treesize reduction 60, result has 15.5 percent of original size [2022-11-03 02:23:03,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 644 treesize of output 627 [2022-11-03 02:23:03,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-03 02:23:03,824 INFO L356 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2022-11-03 02:23:03,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 642 treesize of output 642 [2022-11-03 02:23:04,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2022-11-03 02:23:04,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 02:23:04,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:23:04,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 02:23:05,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 55 [2022-11-03 02:23:05,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 55 [2022-11-03 02:23:05,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 02:23:05,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 02:23:05,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 02:23:09,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-11-03 02:23:09,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-11-03 02:23:09,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-03 02:23:09,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:09,495 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-03 02:23:09,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 78 [2022-11-03 02:23:09,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:23:09,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:23:09,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 02:23:10,039 INFO L356 Elim1Store]: treesize reduction 68, result has 36.4 percent of original size [2022-11-03 02:23:10,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 129 [2022-11-03 02:23:10,083 INFO L356 Elim1Store]: treesize reduction 95, result has 11.2 percent of original size [2022-11-03 02:23:10,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 96 [2022-11-03 02:23:10,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 02:23:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:10,441 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 02:23:10,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 102 treesize of output 44 [2022-11-03 02:24:36,414 WARN L234 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 13364 DAG size of output: 12193 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:35:19,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:36:15,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:36:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:15,932 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-03 02:36:15,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 102 treesize of output 44