./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 --- 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-2329fc7 [2022-12-14 15:52:35,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:52:35,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:52:35,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:52:35,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:52:35,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:52:35,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:52:35,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:52:35,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:52:35,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:52:35,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:52:35,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:52:35,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:52:35,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:52:35,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:52:35,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:52:35,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:52:35,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:52:35,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:52:35,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:52:35,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:52:35,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:52:35,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:52:35,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:52:35,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:52:35,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:52:35,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:52:35,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:52:35,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:52:35,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:52:35,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:52:35,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:52:35,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:52:35,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:52:35,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:52:35,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:52:35,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:52:35,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:52:35,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:52:35,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:52:35,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:52:35,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:52:35,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:52:35,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:52:35,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:52:35,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:52:35,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:52:35,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:52:35,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:52:35,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:52:35,093 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:52:35,093 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:52:35,093 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:52:35,093 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:52:35,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:52:35,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:52:35,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:52:35,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:52:35,095 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:52:35,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:52:35,096 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_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 [2022-12-14 15:52:35,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:52:35,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:52:35,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:52:35,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:52:35,278 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:52:35,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2022-12-14 15:52:37,823 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:52:37,972 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:52:37,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2022-12-14 15:52:37,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/data/d116011be/7b5ec96a77324c0b9101b81aba85208a/FLAG47b360bf6 [2022-12-14 15:52:38,398 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/data/d116011be/7b5ec96a77324c0b9101b81aba85208a [2022-12-14 15:52:38,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:52:38,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:52:38,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:52:38,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:52:38,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:52:38,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c82742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38, skipping insertion in model container [2022-12-14 15:52:38,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:52:38,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:52:38,552 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2022-12-14 15:52:38,560 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2022-12-14 15:52:38,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2022-12-14 15:52:38,567 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2022-12-14 15:52:38,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:52:38,577 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:52:38,591 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2022-12-14 15:52:38,595 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2022-12-14 15:52:38,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2022-12-14 15:52:38,601 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2022-12-14 15:52:38,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:52:38,615 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:52:38,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38 WrapperNode [2022-12-14 15:52:38,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:52:38,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:52:38,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:52:38,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:52:38,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,648 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 158 [2022-12-14 15:52:38,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:52:38,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:52:38,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:52:38,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:52:38,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:52:38,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:52:38,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:52:38,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:52:38,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (1/1) ... [2022-12-14 15:52:38,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:52:38,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:38,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:52:38,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:52:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:52:38,776 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:52:38,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:52:38,946 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:52:38,965 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:52:38,965 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:52:38,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:52:38 BoogieIcfgContainer [2022-12-14 15:52:38,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:52:38,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:52:38,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:52:38,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:52:38,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:52:38" (1/3) ... [2022-12-14 15:52:38,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf4ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:52:38, skipping insertion in model container [2022-12-14 15:52:38,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:52:38" (2/3) ... [2022-12-14 15:52:38,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf4ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:52:38, skipping insertion in model container [2022-12-14 15:52:38,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:52:38" (3/3) ... [2022-12-14 15:52:38,973 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2022-12-14 15:52:38,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:52:38,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 15:52:39,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:52:39,029 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;@7b15bda1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:52:39,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 15:52:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 15:52:39,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:39,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:39,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1398723204, now seen corresponding path program 1 times [2022-12-14 15:52:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:39,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068676832] [2022-12-14 15:52:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:39,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:39,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068676832] [2022-12-14 15:52:39,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068676832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:39,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:52:39,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:52:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219471856] [2022-12-14 15:52:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:39,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:52:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:52:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:52:39,282 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:39,311 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2022-12-14 15:52:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:52:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 15:52:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:39,320 INFO L225 Difference]: With dead ends: 71 [2022-12-14 15:52:39,320 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 15:52:39,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:52:39,325 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:39,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 15:52:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-14 15:52:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-12-14 15:52:39,353 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 9 [2022-12-14 15:52:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:39,354 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-12-14 15:52:39,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-12-14 15:52:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 15:52:39,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:39,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:39,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:52:39,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2025301444, now seen corresponding path program 1 times [2022-12-14 15:52:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:39,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973920155] [2022-12-14 15:52:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:39,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973920155] [2022-12-14 15:52:39,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973920155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482316997] [2022-12-14 15:52:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:39,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:39,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:39,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:52:39,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:52:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:39,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:52:39,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:39,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:52:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:39,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482316997] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:39,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 15:52:39,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2022-12-14 15:52:39,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767545638] [2022-12-14 15:52:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:39,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:52:39,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:52:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 15:52:39,696 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:39,715 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-12-14 15:52:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:52:39,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 15:52:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:39,716 INFO L225 Difference]: With dead ends: 41 [2022-12-14 15:52:39,716 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 15:52:39,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 15:52:39,717 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:39,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 15:52:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-12-14 15:52:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-12-14 15:52:39,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2022-12-14 15:52:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:39,721 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-14 15:52:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-12-14 15:52:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:52:39,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:39,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:39,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:52:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:39,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash 416735058, now seen corresponding path program 1 times [2022-12-14 15:52:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:39,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417952441] [2022-12-14 15:52:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:40,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:40,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417952441] [2022-12-14 15:52:40,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417952441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:40,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:52:40,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:52:40,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600125157] [2022-12-14 15:52:40,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:40,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:52:40,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:52:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:52:40,037 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:40,074 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-12-14 15:52:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:52:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:52:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:40,075 INFO L225 Difference]: With dead ends: 57 [2022-12-14 15:52:40,075 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 15:52:40,076 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 [2022-12-14 15:52:40,077 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:40,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 15:52:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-12-14 15:52:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-14 15:52:40,084 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2022-12-14 15:52:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:40,084 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-14 15:52:40,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-14 15:52:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:52:40,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:40,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:40,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:52:40,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 347292237, now seen corresponding path program 1 times [2022-12-14 15:52:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:40,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182182357] [2022-12-14 15:52:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:40,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182182357] [2022-12-14 15:52:40,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182182357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:40,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:52:40,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:52:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109723282] [2022-12-14 15:52:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:52:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:52:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:52:40,158 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:40,190 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-12-14 15:52:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:52:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:52:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:40,192 INFO L225 Difference]: With dead ends: 50 [2022-12-14 15:52:40,192 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 15:52:40,192 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 [2022-12-14 15:52:40,193 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 79 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 15:52:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2022-12-14 15:52:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-12-14 15:52:40,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2022-12-14 15:52:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:40,200 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-12-14 15:52:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-12-14 15:52:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 15:52:40,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:40,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:40,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:52:40,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2055926826, now seen corresponding path program 1 times [2022-12-14 15:52:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:40,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757053245] [2022-12-14 15:52:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:40,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:40,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757053245] [2022-12-14 15:52:40,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757053245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:40,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:52:40,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:52:40,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95472991] [2022-12-14 15:52:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:52:40,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:52:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:52:40,241 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:40,274 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2022-12-14 15:52:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:52:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 15:52:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:40,275 INFO L225 Difference]: With dead ends: 53 [2022-12-14 15:52:40,275 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 15:52:40,275 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 [2022-12-14 15:52:40,276 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:40,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 15:52:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-12-14 15:52:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-12-14 15:52:40,280 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2022-12-14 15:52:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:40,280 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-12-14 15:52:40,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-12-14 15:52:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 15:52:40,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:40,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:40,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:52:40,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1076700307, now seen corresponding path program 1 times [2022-12-14 15:52:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:40,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462319327] [2022-12-14 15:52:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:40,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:40,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462319327] [2022-12-14 15:52:40,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462319327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:40,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786076068] [2022-12-14 15:52:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:40,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:40,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:40,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:52:40,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:52:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:52:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:52:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:52:40,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786076068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:52:40,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [64838570] [2022-12-14 15:52:40,474 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 15:52:40,474 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:52:40,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:52:40,481 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:52:40,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:52:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:40,562 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:52:40,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:52:40,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:40,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 15:52:40,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:40,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 15:52:40,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:40,706 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-12-14 15:52:40,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 234 [2022-12-14 15:52:40,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-12-14 15:52:40,890 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:52:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [64838570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:41,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:52:41,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2022-12-14 15:52:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570914085] [2022-12-14 15:52:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:41,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 15:52:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 15:52:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-14 15:52:41,932 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:42,131 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2022-12-14 15:52:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 15:52:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 15:52:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:42,132 INFO L225 Difference]: With dead ends: 55 [2022-12-14 15:52:42,132 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 15:52:42,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-14 15:52:42,133 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:42,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:52:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 15:52:42,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-12-14 15:52:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-12-14 15:52:42,137 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 17 [2022-12-14 15:52:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:42,137 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-12-14 15:52:42,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-12-14 15:52:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:52:42,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:42,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:42,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:52:42,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 15:52:42,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 301577733, now seen corresponding path program 1 times [2022-12-14 15:52:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783260502] [2022-12-14 15:52:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:42,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783260502] [2022-12-14 15:52:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783260502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:42,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:52:42,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:52:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488676566] [2022-12-14 15:52:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:52:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:52:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:52:42,510 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:42,561 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-12-14 15:52:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:52:42,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 15:52:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:42,563 INFO L225 Difference]: With dead ends: 53 [2022-12-14 15:52:42,563 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 15:52:42,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 15:52:42,564 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 63 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 15:52:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2022-12-14 15:52:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-12-14 15:52:42,571 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 18 [2022-12-14 15:52:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:42,571 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-12-14 15:52:42,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-12-14 15:52:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 15:52:42,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:42,572 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:42,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:52:42,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1159158719, now seen corresponding path program 1 times [2022-12-14 15:52:42,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:42,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834548892] [2022-12-14 15:52:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 15:52:42,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:42,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834548892] [2022-12-14 15:52:42,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834548892] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720697732] [2022-12-14 15:52:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:42,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:42,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:52:42,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:52:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:42,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 15:52:42,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:42,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:52:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:52:42,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720697732] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:52:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509542258] [2022-12-14 15:52:42,783 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:52:42,783 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:52:42,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:52:42,784 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:52:42,784 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:52:42,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:42,817 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 15:52:42,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 15:52:42,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:42,850 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:52:42,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:52:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:42,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-12-14 15:52:42,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:42,947 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-12-14 15:52:42,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 247 treesize of output 241 [2022-12-14 15:52:43,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-12-14 15:52:43,242 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:52:45,002 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1153#(and (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= |ULTIMATE.start_main_~__tmp_3~0#1| (ite (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (* (ite (<= (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (- 4294967296))) 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (- 4294967296))) 4))) 4294967296)) 1 0)) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (= ~__tmp_155_0~0 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (< (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (= ~__return_136~0 0) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 1) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:52:45,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:52:45,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:52:45,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2022-12-14 15:52:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325860777] [2022-12-14 15:52:45,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:52:45,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:52:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:52:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-12-14 15:52:45,004 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:45,101 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2022-12-14 15:52:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:52:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 15:52:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:45,102 INFO L225 Difference]: With dead ends: 71 [2022-12-14 15:52:45,102 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 15:52:45,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-12-14 15:52:45,103 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:45,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 40 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:52:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 15:52:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-14 15:52:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-12-14 15:52:45,106 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2022-12-14 15:52:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:45,107 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-12-14 15:52:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-12-14 15:52:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 15:52:45,107 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:45,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:45,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:52:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 15:52:45,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 38670, now seen corresponding path program 1 times [2022-12-14 15:52:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:45,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731942383] [2022-12-14 15:52:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 15:52:45,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:45,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731942383] [2022-12-14 15:52:45,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731942383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:45,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520286500] [2022-12-14 15:52:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:45,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:45,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:52:45,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:52:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:45,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:52:45,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 15:52:45,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:52:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 15:52:45,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520286500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:52:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [531513210] [2022-12-14 15:52:45,554 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 15:52:45,554 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:52:45,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:52:45,555 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:52:45,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:52:45,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:45,593 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:52:45,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:52:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:45,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 15:52:45,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:45,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-12-14 15:52:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:52:45,682 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-12-14 15:52:45,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 247 treesize of output 241 [2022-12-14 15:52:45,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-12-14 15:52:45,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:52:48,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1459#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= |ULTIMATE.start_main_~__tmp_3~0#1| (ite (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (* (ite (<= (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (- 4294967296))) 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (- 4294967296))) 4))) 4294967296)) 1 0)) (= ~__tmp_155_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (<= ~__tmp_155_0~0 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (<= |#NULL.offset| 0) (< (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)) (<= 0 ~__return_136~0) (<= ~__return_main~0 0) (<= ~__return_136~0 0) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 ~__tmp_155_0~0) (= (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 1) |ULTIMATE.start_main_~main__index1~0#1|) (= (+ |ULTIMATE.start_main_~main__index2~0#1| 1) |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1|) (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 4294967296) (- 4294967296))) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296) 2147483647) (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296) (+ (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296) (- 4294967296))) 4))) 4294967296)) (<= 0 ~__return_main~0) (<= 1 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:52:48,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:52:48,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:52:48,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 15:52:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667753357] [2022-12-14 15:52:48,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:52:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 15:52:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 15:52:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-12-14 15:52:48,766 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:48,821 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2022-12-14 15:52:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:52:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 15:52:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:48,822 INFO L225 Difference]: With dead ends: 66 [2022-12-14 15:52:48,822 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 15:52:48,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-12-14 15:52:48,822 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:48,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:52:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 15:52:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-12-14 15:52:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-12-14 15:52:48,826 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2022-12-14 15:52:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:48,826 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-12-14 15:52:48,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-12-14 15:52:48,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 15:52:48,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:52:48,827 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:48,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:52:49,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:49,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 15:52:49,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:52:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1234921230, now seen corresponding path program 2 times [2022-12-14 15:52:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:52:49,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226218817] [2022-12-14 15:52:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:52:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:52:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 15:52:49,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:52:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226218817] [2022-12-14 15:52:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226218817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:52:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202117521] [2022-12-14 15:52:49,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:52:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:52:49,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:52:49,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:52:49,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 15:52:49,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:52:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 15:52:49,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:49,946 INFO L321 Elim1Store]: treesize reduction 120, result has 5.5 percent of original size [2022-12-14 15:52:49,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 356 treesize of output 156 [2022-12-14 15:52:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 15:52:50,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:52:50,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202117521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:52:50,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 15:52:50,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2022-12-14 15:52:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596709233] [2022-12-14 15:52:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:52:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 15:52:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:52:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 15:52:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-12-14 15:52:50,038 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:50,469 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-14 15:52:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 15:52:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-14 15:52:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:50,470 INFO L225 Difference]: With dead ends: 47 [2022-12-14 15:52:50,470 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 15:52:50,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-12-14 15:52:50,471 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:50,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:52:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 15:52:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 15:52:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 15:52:50,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-12-14 15:52:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:50,472 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 15:52:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 15:52:50,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 15:52:50,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-14 15:52:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-14 15:52:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-14 15:52:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-14 15:52:50,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 15:52:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 15:52:50,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 15:52:51,078 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2022-12-14 15:52:51,079 INFO L895 garLoopResultBuilder]: At program point L118(lines 30 189) the Hoare annotation is: (and (< (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296) (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296)) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1)) [2022-12-14 15:52:51,079 INFO L895 garLoopResultBuilder]: At program point L52(lines 50 143) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) (let ((.cse0 (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) .cse5)) (.cse4 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) (or (let ((.cse1 (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296)) (.cse2 (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296))) (and (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1| 1) .cse0 (< .cse1 .cse2) (< .cse2 100000) (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|))) (= (mod (select .cse3 (+ (* 4 .cse1) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select .cse3 (+ (* .cse2 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296))) .cse4 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1))) (and (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) .cse0 (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= ~__tmp_155_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (< .cse5 100000) (not (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 100000)) (= ~__return_136~0 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) .cse4 (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0))))) [2022-12-14 15:52:51,079 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-12-14 15:52:51,079 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2022-12-14 15:52:51,079 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 14 200) the Hoare annotation is: true [2022-12-14 15:52:51,079 INFO L895 garLoopResultBuilder]: At program point $Ultimate##32(lines 104 131) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) (or (let ((.cse0 (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296)) (.cse1 (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse0) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse1 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296))) .cse3)) (and (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296)) .cse3))) [2022-12-14 15:52:51,080 INFO L895 garLoopResultBuilder]: At program point L69(lines 66 92) the Hoare annotation is: (let ((.cse0 (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296)) (.cse1 (mod (+ |ULTIMATE.start_main_~main__index2~0#1| 1) 4294967296))) (and (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1| 1) (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296)) (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse0) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse1 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296))) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 188) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 194) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= ~__tmp_155_0~0 0) (= ~__return_136~0 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0)) [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 124) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 177) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-12-14 15:52:51,080 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L895 garLoopResultBuilder]: At program point L38(lines 35 151) the Hoare annotation is: (and (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= ~__tmp_155_0~0 0) (not (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 100000)) (= ~__return_136~0 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~main__index2~0#1| (+ 99999 (* (div |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4294967296))) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 1) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0)) [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 183) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L902 garLoopResultBuilder]: At program point L129(lines 101 136) the Hoare annotation is: true [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 189) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L895 garLoopResultBuilder]: At program point L89(lines 64 97) the Hoare annotation is: false [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2022-12-14 15:52:51,081 INFO L895 garLoopResultBuilder]: At program point L148(lines 33 156) the Hoare annotation is: false [2022-12-14 15:52:51,081 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 199) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 136) no Hoare annotation was computed. [2022-12-14 15:52:51,082 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2022-12-14 15:52:51,084 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:52:51,086 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:52:51,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:52:51 BoogieIcfgContainer [2022-12-14 15:52:51,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:52:51,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:52:51,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:52:51,099 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:52:51,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:52:38" (3/4) ... [2022-12-14 15:52:51,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 15:52:51,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-14 15:52:51,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 15:52:51,109 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 15:52:51,109 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 15:52:51,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:52:51,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:52:51,135 INFO L158 Benchmark]: Toolchain (without parser) took 12733.54ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 128.2MB in the beginning and 166.6MB in the end (delta: -38.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,135 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:52:51,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.51ms. Allocated memory is still 163.6MB. Free memory was 128.2MB in the beginning and 115.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.00ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 113.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,136 INFO L158 Benchmark]: Boogie Preprocessor took 18.97ms. Allocated memory is still 163.6MB. Free memory was 113.9MB in the beginning and 112.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,136 INFO L158 Benchmark]: RCFGBuilder took 298.54ms. Allocated memory is still 163.6MB. Free memory was 112.2MB in the beginning and 96.8MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,136 INFO L158 Benchmark]: TraceAbstraction took 12130.26ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 96.0MB in the beginning and 169.8MB in the end (delta: -73.8MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,137 INFO L158 Benchmark]: Witness Printer took 35.83ms. Allocated memory is still 218.1MB. Free memory was 169.8MB in the beginning and 166.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:52:51,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.51ms. Allocated memory is still 163.6MB. Free memory was 128.2MB in the beginning and 115.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.00ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 113.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.97ms. Allocated memory is still 163.6MB. Free memory was 113.9MB in the beginning and 112.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.54ms. Allocated memory is still 163.6MB. Free memory was 112.2MB in the beginning and 96.8MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12130.26ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 96.0MB in the beginning and 169.8MB in the end (delta: -73.8MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. * Witness Printer took 35.83ms. Allocated memory is still 218.1MB. Free memory was 169.8MB in the beginning and 166.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 171]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 659 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 408 IncrementalHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 243 mSDtfsCounter, 408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 173 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 26 NumberOfFragments, 359 HoareAnnotationTreeSize, 10 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 474 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 263 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 1051 SizeOfPredicates, 13 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 47/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 41, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 177, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((main__loop_entered == 0 && 0 <= main__array) && __tmp_155_0 == 0) && __return_136 == 0) && 0 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && __return_main == 0) && main__array == 0) && #NULL == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((main__loop_entered == 0 && main__index1 % 4294967296 < main__index2 % 4294967296) && 0 <= main__array) && __tmp_155_0 == 0) && !(i % 4294967296 < 100000)) && __return_136 == 0) && 0 <= i) && main__index2 <= 99999 + main__index2 / 4294967296 * 4294967296) && main____CPAchecker_TMP_0 == 1) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && __return_main == 0) && main__array == 0) && #NULL == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((((((main____CPAchecker_TMP_0 == 1 && main__index1 % 4294967296 < main__index2 % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][4 * ((4294967295 + main__index1) % 4294967296) + main__array] % 4294967296 == unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4 + main__array] % 4294967296) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (((((((((((((((main__loop_entered == 0 && main__index1 % 4294967296 < main__index2 % 4294967296) && 0 <= main__array) && __tmp_155_0 == main____CPAchecker_TMP_0) && main__index2 % 4294967296 < 100000) && !(i % 4294967296 < 100000)) && __return_136 == 0) && 0 <= i) && main____CPAchecker_TMP_0 == 1) && #NULL == 0) && main____CPAchecker_TMP_0 == __tmp_1) && __VERIFIER_assert__cond == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && __return_main == 0) && main__array == 0) && #NULL == 0) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: ((((main____CPAchecker_TMP_0 == 1 && main__index1 % 4294967296 < main__index2 % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][4 * ((4294967295 + main__index1) % 4294967296) + main__array] % 4294967296 == unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4 + main__array] % 4294967296) && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296 && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296 && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][4 * ((4294967295 + main__index1) % 4294967296) + main__array] % 4294967296 == unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4 + main__array] % 4294967296) && __VERIFIER_assert__cond == 1) || (main__index1 % 4294967296 < main__index2 % 4294967296 && __VERIFIER_assert__cond == 1) RESULT: Ultimate proved your program to be correct! [2022-12-14 15:52:51,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd935726-58da-4ecf-8aaf-0a54aedb44d3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE