./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH --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 ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:59:23,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:59:23,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:59:23,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:59:23,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:59:23,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:59:23,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:59:23,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:59:23,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:59:23,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:59:23,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:59:23,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:59:23,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:59:23,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:59:23,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:59:23,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:59:23,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:59:23,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:59:23,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:59:23,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:59:23,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:59:23,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:59:23,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:59:23,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:59:23,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:59:23,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:59:23,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:59:23,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:59:23,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:59:23,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:59:23,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:59:23,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:59:23,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:59:23,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:59:23,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:59:23,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:59:23,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:59:23,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:59:23,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:59:23,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:59:23,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:59:23,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:59:23,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:59:23,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:59:23,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:59:23,317 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:59:23,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:59:23,317 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:59:23,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:59:23,318 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:59:23,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:59:23,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:59:23,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:59:23,318 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:59:23,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:59:23,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:59:23,319 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:59:23,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:59:23,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:59:23,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:59:23,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:59:23,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:59:23,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:59:23,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:59:23,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:59:23,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:59:23,322 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:59:23,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:59:23,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:59:23,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:59:23,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:59:23,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:59:23,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:23,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:59:23,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:59:23,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:59:23,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:59:23,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:59:23,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:59:23,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:59:23,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:59:23,326 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2021-11-03 03:59:23,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:59:23,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:59:23,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:59:23,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:59:23,686 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:59:23,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-03 03:59:23,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/cda04550a/6c299350896649f5b898ddf3a76c673e/FLAG476ff2250 [2021-11-03 03:59:24,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:59:24,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-03 03:59:24,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/cda04550a/6c299350896649f5b898ddf3a76c673e/FLAG476ff2250 [2021-11-03 03:59:24,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/cda04550a/6c299350896649f5b898ddf3a76c673e [2021-11-03 03:59:24,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:59:24,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:59:24,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:24,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:59:24,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:59:24,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:24" (1/1) ... [2021-11-03 03:59:24,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5128d850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:24, skipping insertion in model container [2021-11-03 03:59:24,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:24" (1/1) ... [2021-11-03 03:59:24,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:59:24,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:59:25,179 WARN L228 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-03 03:59:25,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:25,374 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:59:25,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ac65f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:25, skipping insertion in model container [2021-11-03 03:59:25,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:25,375 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:59:25,378 INFO L168 Benchmark]: Toolchain (without parser) took 783.81 ms. Allocated memory is still 100.7 MB. Free memory was 61.4 MB in the beginning and 62.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:25,380 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 81.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:59:25,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.86 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 62.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:25,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 81.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 780.86 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 62.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH --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 ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:59:27,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:59:27,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:59:27,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:59:27,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:59:27,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:59:27,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:59:27,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:59:27,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:59:27,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:59:27,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:59:27,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:59:27,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:59:27,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:59:27,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:59:27,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:59:27,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:59:27,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:59:27,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:59:27,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:59:27,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:59:28,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:59:28,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:59:28,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:59:28,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:59:28,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:59:28,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:59:28,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:59:28,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:59:28,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:59:28,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:59:28,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:59:28,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:59:28,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:59:28,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:59:28,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:59:28,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:59:28,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:59:28,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:59:28,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:59:28,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:59:28,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:59:28,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:59:28,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:59:28,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:59:28,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:59:28,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:59:28,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:59:28,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:59:28,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:59:28,100 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:59:28,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:59:28,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:59:28,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:59:28,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:59:28,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:59:28,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:59:28,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:59:28,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:59:28,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:59:28,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:59:28,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:59:28,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:59:28,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:59:28,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:59:28,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:59:28,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:59:28,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:59:28,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:28,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:59:28,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:59:28,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:59:28,108 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:59:28,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:28,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:59:28,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:59:28,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:59:28,110 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2021-11-03 03:59:28,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:59:28,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:59:28,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:59:28,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:59:28,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:59:28,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-03 03:59:28,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/843a94be5/0a32e70dde7e42b3b6d87e4b5c723c8d/FLAG22d45e57f [2021-11-03 03:59:29,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:59:29,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2021-11-03 03:59:29,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/843a94be5/0a32e70dde7e42b3b6d87e4b5c723c8d/FLAG22d45e57f [2021-11-03 03:59:29,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/data/843a94be5/0a32e70dde7e42b3b6d87e4b5c723c8d [2021-11-03 03:59:29,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:59:29,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:59:29,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:29,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:59:29,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:59:29,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760806b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29, skipping insertion in model container [2021-11-03 03:59:29,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:59:29,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:59:30,296 WARN L228 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-03 03:59:30,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:30,557 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:59:30,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:59:30,704 WARN L228 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-03 03:59:30,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:30,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:59:30,910 WARN L228 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_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2021-11-03 03:59:30,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:31,024 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:59:31,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31 WrapperNode [2021-11-03 03:59:31,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:31,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:31,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:59:31,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:59:31,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:31,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:59:31,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:59:31,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:59:31,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:31,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:32,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:32,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:32,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:59:32,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:59:32,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:59:32,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:59:32,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (1/1) ... [2021-11-03 03:59:32,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:59:32,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:59:32,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:59:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:59:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:59:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:59:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:59:48,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:59:48,564 INFO L299 CfgBuilder]: Removed 1257 assume(true) statements. [2021-11-03 03:59:48,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:48 BoogieIcfgContainer [2021-11-03 03:59:48,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:59:48,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:59:48,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:59:48,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:59:48,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:29" (1/3) ... [2021-11-03 03:59:48,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce4f6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:48, skipping insertion in model container [2021-11-03 03:59:48,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:31" (2/3) ... [2021-11-03 03:59:48,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce4f6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:48, skipping insertion in model container [2021-11-03 03:59:48,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:48" (3/3) ... [2021-11-03 03:59:48,584 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2021-11-03 03:59:48,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:59:48,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 03:59:48,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:59:48,720 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:59:48,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 03:59:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 5823 states, 5812 states have (on average 1.8969373709566415) internal successors, (11025), 5822 states have internal predecessors, (11025), 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) [2021-11-03 03:59:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 03:59:48,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:48,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:48,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:59:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1560019917, now seen corresponding path program 1 times [2021-11-03 03:59:48,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:48,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43485085] [2021-11-03 03:59:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:48,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:48,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:48,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:48,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:59:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:59:49,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:49,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:50,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:50,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43485085] [2021-11-03 03:59:50,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43485085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:50,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:59:50,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353905836] [2021-11-03 03:59:50,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:59:50,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:59:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:59:50,133 INFO L87 Difference]: Start difference. First operand has 5823 states, 5812 states have (on average 1.8969373709566415) internal successors, (11025), 5822 states have internal predecessors, (11025), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:53,365 INFO L93 Difference]: Finished difference Result 40383 states and 76456 transitions. [2021-11-03 03:59:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:59:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 03:59:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:53,659 INFO L225 Difference]: With dead ends: 40383 [2021-11-03 03:59:53,659 INFO L226 Difference]: Without dead ends: 34561 [2021-11-03 03:59:53,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:59:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34561 states. [2021-11-03 03:59:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34561 to 5835. [2021-11-03 03:59:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5825 states have (on average 1.8921888412017167) internal successors, (11022), 5834 states have internal predecessors, (11022), 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) [2021-11-03 03:59:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 11022 transitions. [2021-11-03 03:59:54,290 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 11022 transitions. Word has length 47 [2021-11-03 03:59:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:54,291 INFO L470 AbstractCegarLoop]: Abstraction has 5835 states and 11022 transitions. [2021-11-03 03:59:54,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 11022 transitions. [2021-11-03 03:59:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:59:54,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:54,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:54,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:54,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:54,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:59:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash -149182409, now seen corresponding path program 1 times [2021-11-03 03:59:54,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:54,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731428889] [2021-11-03 03:59:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:54,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:54,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:54,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:54,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:59:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:55,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:55,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:55,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:55,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:55,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731428889] [2021-11-03 03:59:55,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731428889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:55,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:55,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:59:55,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012255646] [2021-11-03 03:59:55,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:55,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:55,378 INFO L87 Difference]: Start difference. First operand 5835 states and 11022 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-03 03:59:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:55,858 INFO L93 Difference]: Finished difference Result 11582 states and 21887 transitions. [2021-11-03 03:59:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-03 03:59:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:55,879 INFO L225 Difference]: With dead ends: 11582 [2021-11-03 03:59:55,879 INFO L226 Difference]: Without dead ends: 5761 [2021-11-03 03:59:55,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-11-03 03:59:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2021-11-03 03:59:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5751 states have (on average 1.8914971309337507) internal successors, (10878), 5760 states have internal predecessors, (10878), 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) [2021-11-03 03:59:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10878 transitions. [2021-11-03 03:59:56,100 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10878 transitions. Word has length 49 [2021-11-03 03:59:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:56,100 INFO L470 AbstractCegarLoop]: Abstraction has 5761 states and 10878 transitions. [2021-11-03 03:59:56,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-03 03:59:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10878 transitions. [2021-11-03 03:59:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:59:56,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:56,104 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:56,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:56,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:56,322 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:59:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -746511787, now seen corresponding path program 1 times [2021-11-03 03:59:56,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:56,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606376030] [2021-11-03 03:59:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:56,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:56,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:56,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:59:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:56,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:59:56,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:57,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:57,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:57,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606376030] [2021-11-03 03:59:57,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606376030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:57,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:57,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:59:57,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970470502] [2021-11-03 03:59:57,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:57,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:57,233 INFO L87 Difference]: Start difference. First operand 5761 states and 10878 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-11-03 03:59:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:57,748 INFO L93 Difference]: Finished difference Result 11496 states and 21719 transitions. [2021-11-03 03:59:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:59:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 51 [2021-11-03 03:59:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:57,768 INFO L225 Difference]: With dead ends: 11496 [2021-11-03 03:59:57,768 INFO L226 Difference]: Without dead ends: 5761 [2021-11-03 03:59:57,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-11-03 03:59:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 5761. [2021-11-03 03:59:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5751 states have (on average 1.8897583029038427) internal successors, (10868), 5760 states have internal predecessors, (10868), 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) [2021-11-03 03:59:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 10868 transitions. [2021-11-03 03:59:58,137 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 10868 transitions. Word has length 51 [2021-11-03 03:59:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:58,138 INFO L470 AbstractCegarLoop]: Abstraction has 5761 states and 10868 transitions. [2021-11-03 03:59:58,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2021-11-03 03:59:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 10868 transitions. [2021-11-03 03:59:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:59:58,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:58,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:58,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:58,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:58,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:59:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1083001569, now seen corresponding path program 1 times [2021-11-03 03:59:58,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:58,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338527299] [2021-11-03 03:59:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:58,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:58,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:58,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:59:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:58,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:58,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:59,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:59,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:59,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338527299] [2021-11-03 03:59:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338527299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:59,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:59,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:59:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636803019] [2021-11-03 03:59:59,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:59,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:59,305 INFO L87 Difference]: Start difference. First operand 5761 states and 10868 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-03 04:00:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:05,399 INFO L93 Difference]: Finished difference Result 25884 states and 48413 transitions. [2021-11-03 04:00:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:00:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 55 [2021-11-03 04:00:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:05,490 INFO L225 Difference]: With dead ends: 25884 [2021-11-03 04:00:05,491 INFO L226 Difference]: Without dead ends: 20193 [2021-11-03 04:00:05,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:00:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20193 states. [2021-11-03 04:00:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20193 to 10105. [2021-11-03 04:00:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 10095 states have (on average 1.8897473997028231) internal successors, (19077), 10104 states have internal predecessors, (19077), 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) [2021-11-03 04:00:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 19077 transitions. [2021-11-03 04:00:06,218 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 19077 transitions. Word has length 55 [2021-11-03 04:00:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:06,220 INFO L470 AbstractCegarLoop]: Abstraction has 10105 states and 19077 transitions. [2021-11-03 04:00:06,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-03 04:00:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 19077 transitions. [2021-11-03 04:00:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:00:06,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:06,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:06,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:06,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:06,441 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1785333342, now seen corresponding path program 1 times [2021-11-03 04:00:06,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:06,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097603167] [2021-11-03 04:00:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:06,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:06,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:06,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:06,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:00:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:00:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:07,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:07,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:07,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097603167] [2021-11-03 04:00:07,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097603167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:07,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:07,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:00:07,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882271794] [2021-11-03 04:00:07,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:07,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:07,431 INFO L87 Difference]: Start difference. First operand 10105 states and 19077 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2021-11-03 04:00:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:11,644 INFO L93 Difference]: Finished difference Result 83658 states and 158102 transitions. [2021-11-03 04:00:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:00:11,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2021-11-03 04:00:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:11,855 INFO L225 Difference]: With dead ends: 83658 [2021-11-03 04:00:11,855 INFO L226 Difference]: Without dead ends: 73623 [2021-11-03 04:00:11,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:00:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73623 states. [2021-11-03 04:00:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73623 to 18971. [2021-11-03 04:00:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18971 states, 18961 states have (on average 1.8887189494224987) internal successors, (35812), 18970 states have internal predecessors, (35812), 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) [2021-11-03 04:00:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18971 states to 18971 states and 35812 transitions. [2021-11-03 04:00:13,706 INFO L78 Accepts]: Start accepts. Automaton has 18971 states and 35812 transitions. Word has length 55 [2021-11-03 04:00:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:13,707 INFO L470 AbstractCegarLoop]: Abstraction has 18971 states and 35812 transitions. [2021-11-03 04:00:13,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2021-11-03 04:00:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 18971 states and 35812 transitions. [2021-11-03 04:00:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:00:13,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:13,712 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:13,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:13,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:13,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 64408998, now seen corresponding path program 1 times [2021-11-03 04:00:13,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:13,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269434423] [2021-11-03 04:00:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:13,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:13,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:13,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:00:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:00:14,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:14,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:14,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:14,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269434423] [2021-11-03 04:00:14,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269434423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:14,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:14,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:14,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731205475] [2021-11-03 04:00:14,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:14,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:14,632 INFO L87 Difference]: Start difference. First operand 18971 states and 35812 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-03 04:00:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:16,327 INFO L93 Difference]: Finished difference Result 55913 states and 105562 transitions. [2021-11-03 04:00:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-03 04:00:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:16,404 INFO L225 Difference]: With dead ends: 55913 [2021-11-03 04:00:16,405 INFO L226 Difference]: Without dead ends: 36974 [2021-11-03 04:00:16,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36974 states. [2021-11-03 04:00:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36974 to 18847. [2021-11-03 04:00:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18847 states, 18837 states have (on average 1.88798640972554) internal successors, (35564), 18846 states have internal predecessors, (35564), 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) [2021-11-03 04:00:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18847 states to 18847 states and 35564 transitions. [2021-11-03 04:00:17,446 INFO L78 Accepts]: Start accepts. Automaton has 18847 states and 35564 transitions. Word has length 56 [2021-11-03 04:00:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:17,447 INFO L470 AbstractCegarLoop]: Abstraction has 18847 states and 35564 transitions. [2021-11-03 04:00:17,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-03 04:00:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 18847 states and 35564 transitions. [2021-11-03 04:00:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:00:17,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:17,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:17,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:17,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:17,664 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash -563675223, now seen corresponding path program 1 times [2021-11-03 04:00:17,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:17,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515321912] [2021-11-03 04:00:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:17,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:17,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:17,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:00:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:00:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:18,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515321912] [2021-11-03 04:00:18,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515321912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:00:18,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004426063] [2021-11-03 04:00:18,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:18,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:00:18,664 INFO L87 Difference]: Start difference. First operand 18847 states and 35564 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2021-11-03 04:00:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:31,396 INFO L93 Difference]: Finished difference Result 71809 states and 135045 transitions. [2021-11-03 04:00:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:00:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 56 [2021-11-03 04:00:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:31,513 INFO L225 Difference]: With dead ends: 71809 [2021-11-03 04:00:31,513 INFO L226 Difference]: Without dead ends: 52996 [2021-11-03 04:00:31,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:00:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52996 states. [2021-11-03 04:00:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52996 to 36477. [2021-11-03 04:00:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36477 states, 36467 states have (on average 1.8698823593934242) internal successors, (68189), 36476 states have internal predecessors, (68189), 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) [2021-11-03 04:00:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 68189 transitions. [2021-11-03 04:00:33,530 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 68189 transitions. Word has length 56 [2021-11-03 04:00:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:33,531 INFO L470 AbstractCegarLoop]: Abstraction has 36477 states and 68189 transitions. [2021-11-03 04:00:33,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2021-11-03 04:00:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 68189 transitions. [2021-11-03 04:00:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:00:33,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:33,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:33,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:33,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:33,749 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1611681034, now seen corresponding path program 1 times [2021-11-03 04:00:33,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:33,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580494135] [2021-11-03 04:00:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:33,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:33,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:33,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:00:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:34,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:00:34,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:34,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:34,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:34,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580494135] [2021-11-03 04:00:34,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580494135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:34,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:34,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:00:34,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940647711] [2021-11-03 04:00:34,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:34,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:34,671 INFO L87 Difference]: Start difference. First operand 36477 states and 68189 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-03 04:00:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:39,153 INFO L93 Difference]: Finished difference Result 142542 states and 266579 transitions. [2021-11-03 04:00:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 59 [2021-11-03 04:00:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:39,357 INFO L225 Difference]: With dead ends: 142542 [2021-11-03 04:00:39,357 INFO L226 Difference]: Without dead ends: 106102 [2021-11-03 04:00:39,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106102 states. [2021-11-03 04:00:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106102 to 36363. [2021-11-03 04:00:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36363 states, 36353 states have (on average 1.8639176959260584) internal successors, (67759), 36362 states have internal predecessors, (67759), 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) [2021-11-03 04:00:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36363 states to 36363 states and 67759 transitions. [2021-11-03 04:00:41,719 INFO L78 Accepts]: Start accepts. Automaton has 36363 states and 67759 transitions. Word has length 59 [2021-11-03 04:00:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:41,719 INFO L470 AbstractCegarLoop]: Abstraction has 36363 states and 67759 transitions. [2021-11-03 04:00:41,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-11-03 04:00:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36363 states and 67759 transitions. [2021-11-03 04:00:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:00:41,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:41,721 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:41,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:41,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:41,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1140880549, now seen corresponding path program 1 times [2021-11-03 04:00:41,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:41,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34822706] [2021-11-03 04:00:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:41,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:41,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:00:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:42,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:00:42,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:42,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:42,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:42,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34822706] [2021-11-03 04:00:42,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34822706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:42,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:42,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:00:42,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423370928] [2021-11-03 04:00:42,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:42,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:42,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:42,980 INFO L87 Difference]: Start difference. First operand 36363 states and 67759 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-03 04:00:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:53,758 INFO L93 Difference]: Finished difference Result 296524 states and 554410 transitions. [2021-11-03 04:00:53,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:00:53,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-03 04:00:53,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:54,294 INFO L225 Difference]: With dead ends: 296524 [2021-11-03 04:00:54,294 INFO L226 Difference]: Without dead ends: 260217 [2021-11-03 04:00:54,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:00:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260217 states. [2021-11-03 04:00:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260217 to 69639. [2021-11-03 04:00:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69639 states, 69629 states have (on average 1.8642232403165349) internal successors, (129804), 69638 states have internal predecessors, (129804), 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) [2021-11-03 04:00:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69639 states to 69639 states and 129804 transitions. [2021-11-03 04:00:59,054 INFO L78 Accepts]: Start accepts. Automaton has 69639 states and 129804 transitions. Word has length 60 [2021-11-03 04:00:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:59,054 INFO L470 AbstractCegarLoop]: Abstraction has 69639 states and 129804 transitions. [2021-11-03 04:00:59,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-03 04:00:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 69639 states and 129804 transitions. [2021-11-03 04:00:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:00:59,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:59,057 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:59,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:59,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:59,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:00:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -248805591, now seen corresponding path program 1 times [2021-11-03 04:00:59,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:59,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730189934] [2021-11-03 04:00:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:59,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:59,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0f5c25-4ddc-4560-9e11-33cca2edaf4f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:00:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:59,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:00:59,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:00,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:00,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:00,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730189934] [2021-11-03 04:01:00,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730189934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:00,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:00,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:01:00,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520921610] [2021-11-03 04:01:00,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:00,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:00,214 INFO L87 Difference]: Start difference. First operand 69639 states and 129804 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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)