./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba --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 ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d --- 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-b5237d8 [2022-11-22 01:59:59,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:59,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:59,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:59,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:59,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:59,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:59,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:59,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:59,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:59,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:59,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:59,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:59,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:59,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:59,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:59,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:59,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:59,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:59,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:59,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:59,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:59,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:59,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:59,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:59,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:59,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:59,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:59,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:59,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:59,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:59,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:59,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:59,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:59,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:59,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:59,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:59,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:59,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:59,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:59,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:59,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:59:59,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:59,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:59,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:59,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:59,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:59,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:59,366 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:59,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:59,367 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:59,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:59,368 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:59,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:59,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:59,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:59,370 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:59,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:59,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:59,371 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:59,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:59,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:59:59,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:59,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:59:59,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:59,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:59,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:59,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:59,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:59:59,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:59,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:59,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:59,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:59,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:59,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:59,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:59,376 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:59,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:59,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:59,377 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:59,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:59,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:59,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:59,378 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d [2022-11-22 01:59:59,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:59,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:59,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:59,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:59,786 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:59,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2022-11-22 02:00:03,206 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:00:03,530 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:00:03,531 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2022-11-22 02:00:03,539 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/data/5e6d4db0c/d81923b6e53640a980a5e7ef0b658010/FLAGc32ed68a8 [2022-11-22 02:00:03,564 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/data/5e6d4db0c/d81923b6e53640a980a5e7ef0b658010 [2022-11-22 02:00:03,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:00:03,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:00:03,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:00:03,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:00:03,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:00:03,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:00:03" (1/1) ... [2022-11-22 02:00:03,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8cc0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:03, skipping insertion in model container [2022-11-22 02:00:03,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:00:03" (1/1) ... [2022-11-22 02:00:03,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:00:03,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:00:03,916 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2022-11-22 02:00:03,947 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2022-11-22 02:00:03,956 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2022-11-22 02:00:03,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:00:03,974 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:00:04,013 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2022-11-22 02:00:04,022 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2022-11-22 02:00:04,025 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_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2022-11-22 02:00:04,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:00:04,069 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:00:04,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04 WrapperNode [2022-11-22 02:00:04,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:00:04,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:00:04,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:00:04,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:00:04,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,145 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-11-22 02:00:04,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:00:04,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:00:04,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:00:04,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:00:04,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,203 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:00:04,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:00:04,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:00:04,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:00:04,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (1/1) ... [2022-11-22 02:00:04,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:00:04,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:04,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:00:04,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:00:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:00:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:00:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:00:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:00:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:00:04,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:00:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:00:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:00:04,423 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:00:04,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:00:04,681 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:00:04,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:00:04,716 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:00:04,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:04 BoogieIcfgContainer [2022-11-22 02:00:04,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:00:04,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:00:04,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:00:04,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:00:04,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:00:03" (1/3) ... [2022-11-22 02:00:04,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b693c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:04, skipping insertion in model container [2022-11-22 02:00:04,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:00:04" (2/3) ... [2022-11-22 02:00:04,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b693c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:00:04, skipping insertion in model container [2022-11-22 02:00:04,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:04" (3/3) ... [2022-11-22 02:00:04,731 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2022-11-22 02:00:04,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:00:04,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:00:04,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:00:04,828 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;@794c268e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:00:04,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:00:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 29 states have internal predecessors, (44), 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) [2022-11-22 02:00:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:00:04,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:04,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:04,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1734526620, now seen corresponding path program 1 times [2022-11-22 02:00:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:04,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214686708] [2022-11-22 02:00:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:04,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:05,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214686708] [2022-11-22 02:00:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214686708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:05,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:05,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:00:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322846631] [2022-11-22 02:00:05,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:05,369 INFO L87 Difference]: Start difference. First operand has 30 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 29 states have internal predecessors, (44), 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) [2022-11-22 02:00:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:05,451 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2022-11-22 02:00:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:05,455 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 [2022-11-22 02:00:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:05,468 INFO L225 Difference]: With dead ends: 59 [2022-11-22 02:00:05,468 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 02:00:05,473 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 [2022-11-22 02:00:05,477 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 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 [2022-11-22 02:00:05,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 02:00:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-22 02:00:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.4) internal successors, (35), 27 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) [2022-11-22 02:00:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-22 02:00:05,516 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 9 [2022-11-22 02:00:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:05,517 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-22 02:00:05,518 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) [2022-11-22 02:00:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-22 02:00:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:00:05,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:05,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:05,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:00:05,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1865672586, now seen corresponding path program 1 times [2022-11-22 02:00:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513581354] [2022-11-22 02:00:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:05,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:05,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513581354] [2022-11-22 02:00:05,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513581354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094827572] [2022-11-22 02:00:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:05,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:05,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:05,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:05,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:06,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:00:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:06,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:00:06,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094827572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:06,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:00:06,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-22 02:00:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605268740] [2022-11-22 02:00:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:06,139 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-11-22 02:00:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:06,172 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-11-22 02:00:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2022-11-22 02:00:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:06,175 INFO L225 Difference]: With dead ends: 35 [2022-11-22 02:00:06,175 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 02:00:06,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:06,177 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 02:00:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-11-22 02:00:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.36) internal successors, (34), 27 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) [2022-11-22 02:00:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-22 02:00:06,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 10 [2022-11-22 02:00:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:06,185 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-22 02:00:06,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-11-22 02:00:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-22 02:00:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:00:06,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:06,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:06,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 02:00:06,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 112852896, now seen corresponding path program 1 times [2022-11-22 02:00:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574346852] [2022-11-22 02:00:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:06,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574346852] [2022-11-22 02:00:06,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574346852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:06,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:06,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949347228] [2022-11-22 02:00:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:06,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:06,457 INFO L87 Difference]: Start difference. First operand 28 states and 34 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) [2022-11-22 02:00:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:06,528 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-11-22 02:00:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:06,529 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 [2022-11-22 02:00:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:06,533 INFO L225 Difference]: With dead ends: 55 [2022-11-22 02:00:06,534 INFO L226 Difference]: Without dead ends: 35 [2022-11-22 02:00:06,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:06,539 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 34 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 [2022-11-22 02:00:06,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-22 02:00:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-22 02:00:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 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) [2022-11-22 02:00:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-22 02:00:06,554 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 11 [2022-11-22 02:00:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:06,555 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-22 02:00:06,555 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) [2022-11-22 02:00:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-22 02:00:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:00:06,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:06,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:00:06,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 44363387, now seen corresponding path program 1 times [2022-11-22 02:00:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:06,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687605801] [2022-11-22 02:00:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:06,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687605801] [2022-11-22 02:00:06,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687605801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:06,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:06,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:00:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382852494] [2022-11-22 02:00:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:06,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:00:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:06,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:00:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:00:06,731 INFO L87 Difference]: Start difference. First operand 28 states and 33 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) [2022-11-22 02:00:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:06,804 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-11-22 02:00:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:06,807 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 [2022-11-22 02:00:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:06,810 INFO L225 Difference]: With dead ends: 48 [2022-11-22 02:00:06,810 INFO L226 Difference]: Without dead ends: 46 [2022-11-22 02:00:06,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:06,816 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 76 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 [2022-11-22 02:00:06,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 76 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-22 02:00:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-11-22 02:00:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 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) [2022-11-22 02:00:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-22 02:00:06,830 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2022-11-22 02:00:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:06,830 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-22 02:00:06,831 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) [2022-11-22 02:00:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-22 02:00:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:00:06,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:06,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:06,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:00:06,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1437227400, now seen corresponding path program 1 times [2022-11-22 02:00:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261937165] [2022-11-22 02:00:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:06,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:06,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261937165] [2022-11-22 02:00:06,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261937165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:06,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:06,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307729029] [2022-11-22 02:00:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:06,910 INFO L87 Difference]: Start difference. First operand 30 states and 35 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) [2022-11-22 02:00:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:06,964 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-11-22 02:00:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:06,966 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 [2022-11-22 02:00:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:06,966 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:00:06,967 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:00:06,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:06,969 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 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 [2022-11-22 02:00:06,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:00:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-22 02:00:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 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) [2022-11-22 02:00:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-22 02:00:06,986 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2022-11-22 02:00:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:06,986 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-22 02:00:06,986 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) [2022-11-22 02:00:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-22 02:00:06,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:00:06,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:06,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:06,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:00:06,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash -432888485, now seen corresponding path program 1 times [2022-11-22 02:00:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762550549] [2022-11-22 02:00:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:07,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762550549] [2022-11-22 02:00:07,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762550549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029074214] [2022-11-22 02:00:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:07,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:07,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:00:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:07,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:00:07,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:07,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:07,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029074214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1865617830] [2022-11-22 02:00:07,384 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 02:00:07,384 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:00:07,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:00:07,418 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:00:07,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:00:07,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:07,583 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-22 02:00:07,586 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 [2022-11-22 02:00:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:07,656 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 02:00:07,656 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 [2022-11-22 02:00:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:07,733 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 [2022-11-22 02:00:07,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:07,956 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-22 02:00:07,957 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 [2022-11-22 02:00:08,108 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 [2022-11-22 02:00:08,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:00:10,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1865617830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:10,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:00:10,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2022-11-22 02:00:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110450634] [2022-11-22 02:00:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:10,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:00:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:00:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:00:10,864 INFO L87 Difference]: Start difference. First operand 25 states and 29 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) [2022-11-22 02:00:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:11,153 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-11-22 02:00:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:00:11,154 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 [2022-11-22 02:00:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:11,155 INFO L225 Difference]: With dead ends: 52 [2022-11-22 02:00:11,155 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 02:00:11,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:00:11,156 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:11,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 50 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:00:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 02:00:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-22 02:00:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 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) [2022-11-22 02:00:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-22 02:00:11,165 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 17 [2022-11-22 02:00:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:11,166 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-22 02:00:11,166 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) [2022-11-22 02:00:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-22 02:00:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 02:00:11,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:11,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:11,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:11,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1216046569, now seen corresponding path program 1 times [2022-11-22 02:00:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:11,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242519831] [2022-11-22 02:00:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:11,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:11,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242519831] [2022-11-22 02:00:11,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242519831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:11,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:11,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:00:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967993725] [2022-11-22 02:00:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:11,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:00:11,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:00:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:00:11,485 INFO L87 Difference]: Start difference. First operand 33 states and 38 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) [2022-11-22 02:00:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:11,553 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-11-22 02:00:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:00:11,554 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 [2022-11-22 02:00:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:11,554 INFO L225 Difference]: With dead ends: 50 [2022-11-22 02:00:11,554 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:00:11,555 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 [2022-11-22 02:00:11,556 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 59 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 109 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 [2022-11-22 02:00:11,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:00:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2022-11-22 02:00:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 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) [2022-11-22 02:00:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-22 02:00:11,565 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2022-11-22 02:00:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:11,566 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-22 02:00:11,566 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) [2022-11-22 02:00:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-22 02:00:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:00:11,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:11,567 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:11,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:00:11,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash 606111572, now seen corresponding path program 1 times [2022-11-22 02:00:11,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:11,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798116590] [2022-11-22 02:00:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:00:11,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:11,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798116590] [2022-11-22 02:00:11,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798116590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:11,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125100244] [2022-11-22 02:00:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:11,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:11,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:11,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:00:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:11,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:00:11,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:11,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:00:11,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125100244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:11,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543743147] [2022-11-22 02:00:11,871 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 02:00:11,871 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:00:11,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:00:11,872 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:00:11,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:00:11,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:11,934 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 02:00:11,935 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 [2022-11-22 02:00:11,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:11,953 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 [2022-11-22 02:00:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:11,981 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 [2022-11-22 02:00:12,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:12,076 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-22 02:00:12,077 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 [2022-11-22 02:00:12,187 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 [2022-11-22 02:00:12,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:00:14,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1071#(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 [2022-11-22 02:00:14,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:00:14,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:00:14,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2022-11-22 02:00:14,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365908042] [2022-11-22 02:00:14,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:00:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:00:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:00:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:00:14,559 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2022-11-22 02:00:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:14,727 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-11-22 02:00:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:00:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 19 [2022-11-22 02:00:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:14,728 INFO L225 Difference]: With dead ends: 69 [2022-11-22 02:00:14,728 INFO L226 Difference]: Without dead ends: 33 [2022-11-22 02:00:14,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:00:14,729 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 44 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-22 02:00:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-22 02:00:14,735 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) [2022-11-22 02:00:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-22 02:00:14,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2022-11-22 02:00:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-22 02:00:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2022-11-22 02:00:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-22 02:00:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 02:00:14,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:14,737 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] [2022-11-22 02:00:14,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 02:00:14,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:14,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1335604174, now seen corresponding path program 1 times [2022-11-22 02:00:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501532870] [2022-11-22 02:00:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:00:15,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:15,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501532870] [2022-11-22 02:00:15,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501532870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:15,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244434292] [2022-11-22 02:00:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:15,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:15,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:15,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:00:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:00:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:00:15,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:00:15,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244434292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557587954] [2022-11-22 02:00:15,254 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-22 02:00:15,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:00:15,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:00:15,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:00:15,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:00:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:15,316 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 02:00:15,317 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 [2022-11-22 02:00:15,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:15,331 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 [2022-11-22 02:00:15,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:15,355 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 [2022-11-22 02:00:15,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:00:15,440 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-22 02:00:15,441 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 [2022-11-22 02:00:15,507 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 [2022-11-22 02:00:15,983 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:00:18,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1377#(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)) (<= ~__tmp_155_0~0 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 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|) (<= 1 ~__tmp_155_0~0) (<= |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 [2022-11-22 02:00:18,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:00:18,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:00:18,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-22 02:00:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839334467] [2022-11-22 02:00:18,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:00:18,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:00:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:18,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:00:18,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:00:18,966 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) [2022-11-22 02:00:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:19,067 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2022-11-22 02:00:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:00:19,072 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 [2022-11-22 02:00:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:19,073 INFO L225 Difference]: With dead ends: 66 [2022-11-22 02:00:19,073 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 02:00:19,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-22 02:00:19,079 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:19,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:00:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 02:00:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-22 02:00:19,088 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) [2022-11-22 02:00:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-11-22 02:00:19,088 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2022-11-22 02:00:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-11-22 02:00:19,089 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) [2022-11-22 02:00:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-11-22 02:00:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 02:00:19,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:19,090 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] [2022-11-22 02:00:19,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:19,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1712658354, now seen corresponding path program 2 times [2022-11-22 02:00:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:19,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128447048] [2022-11-22 02:00:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:00:19,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128447048] [2022-11-22 02:00:19,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128447048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232054325] [2022-11-22 02:00:19,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:00:19,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:19,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:19,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:00:19,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 02:00:19,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:00:19,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-22 02:00:19,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:20,982 INFO L321 Elim1Store]: treesize reduction 126, result has 5.3 percent of original size [2022-11-22 02:00:20,982 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 362 treesize of output 160 [2022-11-22 02:00:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 02:00:21,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:00:21,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232054325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:21,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:00:21,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 19 [2022-11-22 02:00:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123346684] [2022-11-22 02:00:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:21,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:00:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:00:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:00:21,171 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2022-11-22 02:00:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:22,231 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-22 02:00:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:00:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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 [2022-11-22 02:00:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:22,232 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:00:22,232 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:00:22,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:00:22,233 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:22,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:00:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:00:22,234 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) [2022-11-22 02:00:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:00:22,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-22 02:00:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:22,235 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:00:22,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2022-11-22 02:00:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:00:22,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:00:22,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-22 02:00:22,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-22 02:00:22,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-22 02:00:22,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:22,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:00:23,973 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2022-11-22 02:00:23,973 INFO L895 garLoopResultBuilder]: At program point L155(lines 33 156) the Hoare annotation is: false [2022-11-22 02:00:23,973 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2022-11-22 02:00:23,973 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2022-11-22 02:00:23,974 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-11-22 02:00:23,974 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2022-11-22 02:00:23,974 INFO L902 garLoopResultBuilder]: At program point L135(lines 102 136) the Hoare annotation is: true [2022-11-22 02:00:23,974 INFO L895 garLoopResultBuilder]: At program point L160(lines 30 161) the Hoare annotation is: (let ((.cse6 (+ |ULTIMATE.start_main_~main__index2~0#1| 1))) (let ((.cse3 (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296)) (.cse4 (mod .cse6 4294967296))) (let ((.cse0 (< .cse3 .cse4)) (.cse1 (< .cse4 100000)) (.cse2 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|)) (.cse5 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) (or (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) (and .cse0 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0)) .cse1 (< (mod (+ 4294967294 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296) 100000) (= (mod (select .cse2 (+ (* 4 .cse3) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse4 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296)) .cse5) (and (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) .cse0 (= ~__tmp_155_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (not (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) .cse1 (= ~__tmp_155_0~0 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (<= |#NULL.offset| 0) (<= 0 ~__return_136~0) (<= ~__return_main~0 0) (<= ~__return_136~0 0) (not (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 100000)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 1) |ULTIMATE.start_main_~main__index1~0#1|) (= .cse6 |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1|) (= (mod (select .cse2 (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (let ((.cse7 (mod |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 4294967296))) (ite (<= .cse7 2147483647) .cse7 (+ .cse7 (- 4294967296)))) 4))) 4294967296) (mod (select .cse2 (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= .cse4 2147483647) .cse4 (+ .cse4 (- 4294967296))) 4))) 4294967296)) (<= 0 ~__return_main~0) (<= 0 |#NULL.offset|) .cse5 (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0)))))) [2022-11-22 02:00:23,974 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:00:23,975 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2022-11-22 02:00:23,975 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 166) no Hoare annotation was computed. [2022-11-22 02:00:23,975 INFO L895 garLoopResultBuilder]: At program point L123(lines 103 132) the Hoare annotation is: (let ((.cse2 (+ |ULTIMATE.start_main_~main__index2~0#1| 1))) (let ((.cse7 (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296)) (.cse5 (mod .cse2 4294967296))) (let ((.cse0 (< .cse7 .cse5)) (.cse1 (< .cse5 100000)) (.cse3 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|)) (.cse6 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) (or (and (<= 0 |ULTIMATE.start_main_~#main__array~0#1.base|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) .cse0 (= ~__tmp_155_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) .cse1 (= ~__tmp_155_0~0 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (<= |#NULL.offset| 0) (<= 0 ~__return_136~0) (<= ~__return_main~0 0) (<= ~__return_136~0 0) (not (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 100000)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 1) |ULTIMATE.start_main_~main__index1~0#1|) (= .cse2 |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1|) (= (mod (select .cse3 (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (let ((.cse4 (mod |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 4294967296))) (ite (<= .cse4 2147483647) .cse4 (+ .cse4 (- 4294967296)))) 4))) 4294967296) (mod (select .cse3 (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (ite (<= .cse5 2147483647) .cse5 (+ .cse5 (- 4294967296))) 4))) 4294967296)) (<= 0 ~__return_main~0) (<= 0 |#NULL.offset|) .cse6 (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0)) (and .cse0 .cse1 (< (mod (+ 4294967294 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296) 100000) (= (mod (select .cse3 (+ (* 4 .cse7) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296) (mod (select .cse3 (+ (* .cse5 4) |ULTIMATE.start_main_~#main__array~0#1.offset|)) 4294967296)) .cse6) (and (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296)) .cse6))))) [2022-11-22 02:00:23,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2022-11-22 02:00:23,975 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)) [2022-11-22 02:00:23,975 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2022-11-22 02:00:23,976 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2022-11-22 02:00:23,976 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:00:23,976 INFO L895 garLoopResultBuilder]: At program point L91(lines 66 92) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1| 1) (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) .cse0) (< .cse0 100000) (< (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296) 100000) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) [2022-11-22 02:00:23,976 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 171) no Hoare annotation was computed. [2022-11-22 02:00:23,976 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2022-11-22 02:00:23,976 INFO L895 garLoopResultBuilder]: At program point L83(lines 50 143) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) (let ((.cse0 (< (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) .cse3)) (.cse1 (< .cse3 100000)) (.cse2 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1))) (or (and (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1| 1) .cse0 .cse1 (< (mod (+ 4294967295 |ULTIMATE.start_main_~main__index1~0#1|) 4294967296) 100000) .cse2 (= |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|) .cse1 (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|) .cse2 (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0))))) [2022-11-22 02:00:23,977 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 124) no Hoare annotation was computed. [2022-11-22 02:00:23,977 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-11-22 02:00:23,977 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2022-11-22 02:00:23,977 INFO L902 garLoopResultBuilder]: At program point L170(lines 14 172) the Hoare annotation is: true [2022-11-22 02:00:23,977 INFO L895 garLoopResultBuilder]: At program point L96(lines 64 97) the Hoare annotation is: false [2022-11-22 02:00:23,977 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 161) no Hoare annotation was computed. [2022-11-22 02:00:23,978 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2022-11-22 02:00:23,978 INFO L895 garLoopResultBuilder]: At program point L150(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) (= ~__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|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= |#NULL.base| 0)) [2022-11-22 02:00:23,978 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2022-11-22 02:00:23,981 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:23,984 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:00:24,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:00:24 BoogieIcfgContainer [2022-11-22 02:00:24,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:00:24,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:00:24,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:00:24,010 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:00:24,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:00:04" (3/4) ... [2022-11-22 02:00:24,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:00:24,024 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-22 02:00:24,024 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 02:00:24,024 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 02:00:24,025 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:00:24,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:00:24,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:00:24,066 INFO L158 Benchmark]: Toolchain (without parser) took 20489.09ms. Allocated memory was 153.1MB in the beginning and 293.6MB in the end (delta: 140.5MB). Free memory was 123.3MB in the beginning and 122.3MB in the end (delta: 1.0MB). Peak memory consumption was 141.5MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,066 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:00:24,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.36ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.54ms. Allocated memory is still 153.1MB. Free memory was 111.0MB in the beginning and 109.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,067 INFO L158 Benchmark]: Boogie Preprocessor took 65.53ms. Allocated memory is still 153.1MB. Free memory was 109.0MB in the beginning and 108.1MB in the end (delta: 918.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,068 INFO L158 Benchmark]: RCFGBuilder took 506.51ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 92.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,068 INFO L158 Benchmark]: TraceAbstraction took 19286.76ms. Allocated memory was 153.1MB in the beginning and 293.6MB in the end (delta: 140.5MB). Free memory was 92.2MB in the beginning and 125.5MB in the end (delta: -33.3MB). Peak memory consumption was 110.1MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,068 INFO L158 Benchmark]: Witness Printer took 55.98ms. Allocated memory is still 293.6MB. Free memory was 125.5MB in the beginning and 122.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:00:24,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.36ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.54ms. Allocated memory is still 153.1MB. Free memory was 111.0MB in the beginning and 109.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.53ms. Allocated memory is still 153.1MB. Free memory was 109.0MB in the beginning and 108.1MB in the end (delta: 918.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 506.51ms. Allocated memory is still 153.1MB. Free memory was 108.1MB in the beginning and 92.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19286.76ms. Allocated memory was 153.1MB in the beginning and 293.6MB in the end (delta: 140.5MB). Free memory was 92.2MB in the beginning and 125.5MB in the end (delta: -33.3MB). Peak memory consumption was 110.1MB. Max. memory is 16.1GB. * Witness Printer took 55.98ms. Allocated memory is still 293.6MB. Free memory was 125.5MB in the beginning and 122.3MB 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: 114]: 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, 30 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 19.2s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 378 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 228 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=9, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 30 NumberOfFragments, 628 HoareAnnotationTreeSize, 10 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 553 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 261 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 1085 SizeOfPredicates, 13 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 47/84 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: 1.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.8s, 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: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, 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: 0.1s, 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: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, 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 3 specifications checked. All of them hold - 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: 102]: Loop Invariant Derived loop invariant: 1 - 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) && __return_136 == 0) && 0 <= i) && main__index2 <= 99999 + main__index2 / 4294967296 * 4294967296) && main____CPAchecker_TMP_0 == 1) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 100000 <= i % 4294967296) && __return_main == 0) && main__array == 0) && #NULL == 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((0 <= main__array && __tmp_1 == 1) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && __tmp_155_0 == main____CPAchecker_TMP_0) && (main__index2 + 1) % 4294967296 < 100000) && __tmp_155_0 == 1) && main__loop_entered == 1) && #NULL <= 0) && 0 <= __return_136) && __return_main <= 0) && __return_136 <= 0) && !(i % 4294967296 < 100000)) && 0 <= i) && main____CPAchecker_TMP_1 + 1 == main__index1) && main__index2 + 1 == main____CPAchecker_TMP_2) && unknown-#memory_int-unknown[main__array][main__array + (if main____CPAchecker_TMP_1 % 4294967296 <= 2147483647 then main____CPAchecker_TMP_1 % 4294967296 else main____CPAchecker_TMP_1 % 4294967296 + -4294967296) * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][main__array + (if (main__index2 + 1) % 4294967296 <= 2147483647 then (main__index2 + 1) % 4294967296 else (main__index2 + 1) % 4294967296 + -4294967296) * 4] % 4294967296) && 0 <= __return_main) && 0 <= #NULL) && __VERIFIER_assert__cond == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && main__array == 0) && #NULL == 0) || (((((4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296 && (main__index2 + 1) % 4294967296 < 100000) && (4294967294 + main__index1) % 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) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (main__loop_entered == 0 || ((((((4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296 && !(__VERIFIER_assert__cond == 0)) && (main__index2 + 1) % 4294967296 < 100000) && (4294967294 + main__index1) % 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)) || ((((((((((((((((((((((0 <= main__array && __tmp_1 == 1) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && __tmp_155_0 == main____CPAchecker_TMP_0) && !(main__index1 % 4294967296 < main__index2 % 4294967296)) && (main__index2 + 1) % 4294967296 < 100000) && __tmp_155_0 == 1) && main__loop_entered == 1) && #NULL <= 0) && 0 <= __return_136) && __return_main <= 0) && __return_136 <= 0) && !(i % 4294967296 < 100000)) && 0 <= i) && main____CPAchecker_TMP_1 + 1 == main__index1) && main__index2 + 1 == main____CPAchecker_TMP_2) && unknown-#memory_int-unknown[main__array][main__array + (if main____CPAchecker_TMP_1 % 4294967296 <= 2147483647 then main____CPAchecker_TMP_1 % 4294967296 else main____CPAchecker_TMP_1 % 4294967296 + -4294967296) * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][main__array + (if (main__index2 + 1) % 4294967296 <= 2147483647 then (main__index2 + 1) % 4294967296 else (main__index2 + 1) % 4294967296 + -4294967296) * 4] % 4294967296) && 0 <= __return_main) && 0 <= #NULL) && __VERIFIER_assert__cond == 1) && 0 <= unknown-#StackHeapBarrier-unknown) && main__array == 0) && #NULL == 0) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((main____CPAchecker_TMP_0 == 1 && main__index1 % 4294967296 < main__index2 % 4294967296) && main__index2 % 4294967296 < 100000) && (4294967295 + main__index1) % 4294967296 < 100000) && __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) && main__index2 % 4294967296 < 100000) && (4294967295 + main__index1) % 4294967296 < 100000) && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-22 02:00:24,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc710b5a-ae78-4167-a2ca-eeff1586c5fd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE