./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs --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 cb28fa1a24f823a4a1f46bfc894210ac49362091 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs --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 cb28fa1a24f823a4a1f46bfc894210ac49362091 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:54:41,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:54:41,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:54:41,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:54:41,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:54:41,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:54:41,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:54:41,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:54:41,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:54:41,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:54:41,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:54:41,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:54:41,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:54:41,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:54:41,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:54:41,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:54:41,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:54:41,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:54:41,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:54:41,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:54:41,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:54:41,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:54:41,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:54:41,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:54:41,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:54:41,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:54:41,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:54:41,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:54:41,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:54:41,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:54:41,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:54:41,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:54:41,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:54:41,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:54:41,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:54:41,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:54:41,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:54:41,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:54:41,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:54:41,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:54:41,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:54:41,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:54:41,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:54:41,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:54:41,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:54:41,563 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:54:41,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:54:41,564 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:54:41,564 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:54:41,565 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:54:41,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:54:41,565 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:54:41,567 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:54:41,567 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:54:41,567 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:54:41,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:54:41,568 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:54:41,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:54:41,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:54:41,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:54:41,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:54:41,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:54:41,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:54:41,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:54:41,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:54:41,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:54:41,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:54:41,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:54:41,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:54:41,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:54:41,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:54:41,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:54:41,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:54:41,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:54:41,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:54:41,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:54:41,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:54:41,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:54:41,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:54:41,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:54:41,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:54:41,579 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_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb28fa1a24f823a4a1f46bfc894210ac49362091 [2021-10-16 02:54:41,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:54:41,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:54:41,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:54:41,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:54:41,971 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:54:41,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-16 02:54:42,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/c55723e26/608c24ae689c49a99d8db0c108e1598a/FLAG400bea887 [2021-10-16 02:54:42,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:54:42,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-16 02:54:42,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/c55723e26/608c24ae689c49a99d8db0c108e1598a/FLAG400bea887 [2021-10-16 02:54:42,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/c55723e26/608c24ae689c49a99d8db0c108e1598a [2021-10-16 02:54:42,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:54:42,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:54:42,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:42,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:54:42,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:54:42,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:42" (1/1) ... [2021-10-16 02:54:42,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0d686e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:42, skipping insertion in model container [2021-10-16 02:54:42,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:42" (1/1) ... [2021-10-16 02:54:43,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:54:43,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:54:43,423 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_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-16 02:54:43,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:43,449 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) [2021-10-16 02:54:43,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@633b75cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:43, skipping insertion in model container [2021-10-16 02:54:43,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:43,457 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:54:43,460 INFO L168 Benchmark]: Toolchain (without parser) took 471.45 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 67.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,462 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 75.7 MB in the beginning and 75.6 MB in the end (delta: 110.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:54:43,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.02 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 67.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 75.7 MB in the beginning and 75.6 MB in the end (delta: 110.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.02 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 67.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 120]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:54:46,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:54:46,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:54:46,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:54:46,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:54:46,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:54:46,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:54:46,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:54:46,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:54:46,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:54:46,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:54:46,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:54:46,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:54:46,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:54:46,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:54:46,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:54:46,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:54:46,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:54:46,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:54:46,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:54:46,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:54:46,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:54:46,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:54:46,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:54:46,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:54:46,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:54:46,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:54:46,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:54:46,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:54:46,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:54:46,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:54:46,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:54:46,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:54:46,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:54:46,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:54:46,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:54:46,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:54:46,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:54:46,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:54:46,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:54:46,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:54:46,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:54:46,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:54:46,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:54:46,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:54:46,668 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:54:46,668 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:54:46,668 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:54:46,669 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:54:46,669 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:54:46,670 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:54:46,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:54:46,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:54:46,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:54:46,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:54:46,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:54:46,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:54:46,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:54:46,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:54:46,676 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:54:46,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:54:46,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:54:46,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:54:46,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:54:46,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:54:46,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:54:46,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:54:46,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:54:46,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:54:46,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:54:46,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:54:46,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:54:46,680 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:54:46,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:54:46,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:54:46,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:54:46,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:54:46,682 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_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb28fa1a24f823a4a1f46bfc894210ac49362091 [2021-10-16 02:54:47,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:54:47,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:54:47,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:54:47,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:54:47,172 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:54:47,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-16 02:54:47,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/634848439/63fa7a8915c74e94a28d7fcb539d2461/FLAG349d3c12d [2021-10-16 02:54:48,000 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:54:48,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c [2021-10-16 02:54:48,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/634848439/63fa7a8915c74e94a28d7fcb539d2461/FLAG349d3c12d [2021-10-16 02:54:48,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/data/634848439/63fa7a8915c74e94a28d7fcb539d2461 [2021-10-16 02:54:48,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:54:48,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:54:48,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:48,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:54:48,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:54:48,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:48" (1/1) ... [2021-10-16 02:54:48,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112f4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:48, skipping insertion in model container [2021-10-16 02:54:48,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:48" (1/1) ... [2021-10-16 02:54:48,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:54:48,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:54:48,759 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_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-16 02:54:48,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:48,785 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:54:48,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:54:48,912 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_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-16 02:54:48,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:48,942 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:54:49,073 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_d968ada7-16df-4d1e-a606-a3ecce681904/sv-benchmarks/c/product-lines/minepump_spec2_product41.cil.c[17041,17054] [2021-10-16 02:54:49,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:49,101 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:54:49,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49 WrapperNode [2021-10-16 02:54:49,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:49,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:54:49,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:54:49,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:54:49,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:54:49,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:54:49,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:54:49,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:54:49,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:54:49,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:54:49,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:54:49,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:54:49,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (1/1) ... [2021-10-16 02:54:49,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:54:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:54:49,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:54:49,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:54:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:54:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:54:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:54:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:54:52,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:54:52,125 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-16 02:54:52,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:52 BoogieIcfgContainer [2021-10-16 02:54:52,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:54:52,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:54:52,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:54:52,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:54:52,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:54:48" (1/3) ... [2021-10-16 02:54:52,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53afe460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:54:52, skipping insertion in model container [2021-10-16 02:54:52,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:49" (2/3) ... [2021-10-16 02:54:52,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53afe460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:54:52, skipping insertion in model container [2021-10-16 02:54:52,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:52" (3/3) ... [2021-10-16 02:54:52,139 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2021-10-16 02:54:52,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:54:52,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:54:52,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:54:52,213 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, mConcurrency=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 [2021-10-16 02:54:52,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:54:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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) [2021-10-16 02:54:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:54:52,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:52,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:54:52,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:52,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:52,251 INFO L82 PathProgramCache]: Analyzing trace with hash -466361678, now seen corresponding path program 1 times [2021-10-16 02:54:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:52,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871760370] [2021-10-16 02:54:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:52,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:52,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:52,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:54:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:52,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:54:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:52,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:52,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:52,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871760370] [2021-10-16 02:54:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871760370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:52,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:52,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:54:52,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402833593] [2021-10-16 02:54:52,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:54:52,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:54:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:54:52,897 INFO L87 Difference]: Start difference. First operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:52,958 INFO L93 Difference]: Finished difference Result 175 states and 264 transitions. [2021-10-16 02:54:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:54:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:54:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:52,975 INFO L225 Difference]: With dead ends: 175 [2021-10-16 02:54:52,976 INFO L226 Difference]: Without dead ends: 87 [2021-10-16 02:54:52,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:54:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-16 02:54:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-16 02:54:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 86 states have internal predecessors, (124), 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) [2021-10-16 02:54:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2021-10-16 02:54:53,035 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 18 [2021-10-16 02:54:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2021-10-16 02:54:53,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2021-10-16 02:54:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:54:53,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:53,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:54:53,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:53,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:53,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:53,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1078824867, now seen corresponding path program 1 times [2021-10-16 02:54:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:53,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498483798] [2021-10-16 02:54:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:53,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:53,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:53,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:54:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:54:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:53,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:53,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:53,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498483798] [2021-10-16 02:54:53,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498483798] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:53,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:53,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:54:53,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014052237] [2021-10-16 02:54:53,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:53,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:53,808 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-16 02:54:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:53,836 INFO L93 Difference]: Finished difference Result 87 states and 124 transitions. [2021-10-16 02:54:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 02:54:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:53,839 INFO L225 Difference]: With dead ends: 87 [2021-10-16 02:54:53,840 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 02:54:53,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 02:54:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-16 02:54:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 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) [2021-10-16 02:54:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-16 02:54:53,863 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 19 [2021-10-16 02:54:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:53,864 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-16 02:54:53,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-16 02:54:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-16 02:54:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:54:53,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:53,872 INFO L512 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] [2021-10-16 02:54:53,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:54,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:54,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1959799754, now seen corresponding path program 1 times [2021-10-16 02:54:54,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:54,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863798004] [2021-10-16 02:54:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:54,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:54,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:54,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:54,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:54:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:54,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:54:54,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:54,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:54,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:54,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863798004] [2021-10-16 02:54:54,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863798004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:54,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:54,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:54:54,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140662655] [2021-10-16 02:54:54,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:54,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:54,639 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:54,656 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2021-10-16 02:54:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:54:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:54,660 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:54:54,661 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 02:54:54,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 02:54:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-16 02:54:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 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) [2021-10-16 02:54:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-10-16 02:54:54,687 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 24 [2021-10-16 02:54:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-10-16 02:54:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-10-16 02:54:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:54:54,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:54,694 INFO L512 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] [2021-10-16 02:54:54,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:54,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:54,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2070782503, now seen corresponding path program 1 times [2021-10-16 02:54:54,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:54,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286426337] [2021-10-16 02:54:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:54,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:54,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:54,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:54:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:55,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:54:55,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:55,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:55,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:55,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286426337] [2021-10-16 02:54:55,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286426337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:55,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:55,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:54:55,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48096564] [2021-10-16 02:54:55,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:55,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:55,382 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-16 02:54:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:55,456 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2021-10-16 02:54:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 02:54:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:55,459 INFO L225 Difference]: With dead ends: 93 [2021-10-16 02:54:55,459 INFO L226 Difference]: Without dead ends: 61 [2021-10-16 02:54:55,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-16 02:54:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-10-16 02:54:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 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) [2021-10-16 02:54:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2021-10-16 02:54:55,470 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 25 [2021-10-16 02:54:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:55,470 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2021-10-16 02:54:55,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-16 02:54:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2021-10-16 02:54:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:54:55,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:55,473 INFO L512 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] [2021-10-16 02:54:55,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:55,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:55,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash -576163675, now seen corresponding path program 1 times [2021-10-16 02:54:55,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:55,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88293945] [2021-10-16 02:54:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:55,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:55,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:55,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:54:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:55,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:54:55,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:56,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:56,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:56,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88293945] [2021-10-16 02:54:56,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88293945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:56,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:56,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:54:56,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427822827] [2021-10-16 02:54:56,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:54:56,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:54:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:54:56,288 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-16 02:54:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:56,467 INFO L93 Difference]: Finished difference Result 271 states and 394 transitions. [2021-10-16 02:54:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:54:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-10-16 02:54:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:56,476 INFO L225 Difference]: With dead ends: 271 [2021-10-16 02:54:56,476 INFO L226 Difference]: Without dead ends: 219 [2021-10-16 02:54:56,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:54:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-16 02:54:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 103. [2021-10-16 02:54:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.411764705882353) internal successors, (144), 102 states have internal predecessors, (144), 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) [2021-10-16 02:54:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 144 transitions. [2021-10-16 02:54:56,532 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 144 transitions. Word has length 31 [2021-10-16 02:54:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:56,532 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 144 transitions. [2021-10-16 02:54:56,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-16 02:54:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 144 transitions. [2021-10-16 02:54:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:54:56,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:56,535 INFO L512 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] [2021-10-16 02:54:56,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:56,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:56,752 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1086399261, now seen corresponding path program 1 times [2021-10-16 02:54:56,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:56,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41460962] [2021-10-16 02:54:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:56,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:56,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:56,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:54:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:57,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:54:57,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:57,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:57,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:57,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41460962] [2021-10-16 02:54:57,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41460962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:57,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:57,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:54:57,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207073817] [2021-10-16 02:54:57,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:54:57,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:54:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:54:57,348 INFO L87 Difference]: Start difference. First operand 103 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-16 02:54:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:57,517 INFO L93 Difference]: Finished difference Result 376 states and 533 transitions. [2021-10-16 02:54:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:54:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2021-10-16 02:54:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:57,520 INFO L225 Difference]: With dead ends: 376 [2021-10-16 02:54:57,521 INFO L226 Difference]: Without dead ends: 280 [2021-10-16 02:54:57,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:54:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-16 02:54:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 102. [2021-10-16 02:54:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.396039603960396) internal successors, (141), 101 states have internal predecessors, (141), 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) [2021-10-16 02:54:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-10-16 02:54:57,564 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 32 [2021-10-16 02:54:57,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:57,566 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-10-16 02:54:57,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-10-16 02:54:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-10-16 02:54:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:54:57,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:57,573 INFO L512 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] [2021-10-16 02:54:57,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:57,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:57,779 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 477559900, now seen corresponding path program 1 times [2021-10-16 02:54:57,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:57,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965515893] [2021-10-16 02:54:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:57,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:57,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:57,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:54:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:54:58,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:58,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:58,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:58,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965515893] [2021-10-16 02:54:58,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965515893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:58,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:54:58,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278695468] [2021-10-16 02:54:58,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:54:58,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:54:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:54:58,309 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:58,378 INFO L93 Difference]: Finished difference Result 273 states and 377 transitions. [2021-10-16 02:54:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:54:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 02:54:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:58,381 INFO L225 Difference]: With dead ends: 273 [2021-10-16 02:54:58,381 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 02:54:58,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:54:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 02:54:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 108. [2021-10-16 02:54:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 107 states have internal predecessors, (147), 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) [2021-10-16 02:54:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2021-10-16 02:54:58,401 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 35 [2021-10-16 02:54:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:58,401 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2021-10-16 02:54:58,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2021-10-16 02:54:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:54:58,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:58,403 INFO L512 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] [2021-10-16 02:54:58,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:58,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:58,628 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:58,628 INFO L82 PathProgramCache]: Analyzing trace with hash -533557350, now seen corresponding path program 1 times [2021-10-16 02:54:58,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:58,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986401954] [2021-10-16 02:54:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:58,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:58,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:58,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:58,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:54:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:58,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:54:58,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:59,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:59,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:59,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986401954] [2021-10-16 02:54:59,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986401954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:59,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:59,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:54:59,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739704971] [2021-10-16 02:54:59,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:54:59,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:54:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:54:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:54:59,170 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:59,238 INFO L93 Difference]: Finished difference Result 291 states and 395 transitions. [2021-10-16 02:54:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:54:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 02:54:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:59,241 INFO L225 Difference]: With dead ends: 291 [2021-10-16 02:54:59,241 INFO L226 Difference]: Without dead ends: 190 [2021-10-16 02:54:59,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:54:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-16 02:54:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2021-10-16 02:54:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3603603603603605) internal successors, (151), 111 states have internal predecessors, (151), 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) [2021-10-16 02:54:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2021-10-16 02:54:59,269 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 35 [2021-10-16 02:54:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:59,270 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2021-10-16 02:54:59,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2021-10-16 02:54:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:54:59,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:59,272 INFO L512 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] [2021-10-16 02:54:59,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:54:59,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:54:59,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1554625704, now seen corresponding path program 1 times [2021-10-16 02:54:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:54:59,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489015324] [2021-10-16 02:54:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:59,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:54:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:54:59,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:54:59,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:54:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:59,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:54:59,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:59,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:55:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:00,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:55:00,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489015324] [2021-10-16 02:55:00,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489015324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:00,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:00,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:55:00,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236664265] [2021-10-16 02:55:00,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:55:00,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:55:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:55:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:55:00,090 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 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) [2021-10-16 02:55:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:00,161 INFO L93 Difference]: Finished difference Result 350 states and 475 transitions. [2021-10-16 02:55:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:55:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 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 35 [2021-10-16 02:55:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:00,164 INFO L225 Difference]: With dead ends: 350 [2021-10-16 02:55:00,165 INFO L226 Difference]: Without dead ends: 245 [2021-10-16 02:55:00,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:55:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-16 02:55:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 195. [2021-10-16 02:55:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 194 states have internal predecessors, (262), 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) [2021-10-16 02:55:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2021-10-16 02:55:00,196 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 35 [2021-10-16 02:55:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:00,197 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2021-10-16 02:55:00,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 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) [2021-10-16 02:55:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2021-10-16 02:55:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 02:55:00,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:00,199 INFO L512 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] [2021-10-16 02:55:00,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:55:00,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:55:00,415 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:55:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1879284200, now seen corresponding path program 1 times [2021-10-16 02:55:00,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:55:00,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029446000] [2021-10-16 02:55:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:00,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:55:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:55:00,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:55:00,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:55:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:00,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:55:00,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:55:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:00,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:55:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:01,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:55:01,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029446000] [2021-10-16 02:55:01,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029446000] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:01,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:01,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:55:01,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161821110] [2021-10-16 02:55:01,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:55:01,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:55:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:55:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:55:01,082 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-10-16 02:55:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:04,650 INFO L93 Difference]: Finished difference Result 793 states and 1045 transitions. [2021-10-16 02:55:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:55:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 36 [2021-10-16 02:55:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:04,657 INFO L225 Difference]: With dead ends: 793 [2021-10-16 02:55:04,657 INFO L226 Difference]: Without dead ends: 605 [2021-10-16 02:55:04,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:55:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-16 02:55:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 195. [2021-10-16 02:55:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.324742268041237) internal successors, (257), 194 states have internal predecessors, (257), 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) [2021-10-16 02:55:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-10-16 02:55:04,719 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 36 [2021-10-16 02:55:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:04,719 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-10-16 02:55:04,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-10-16 02:55:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-10-16 02:55:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-16 02:55:04,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:04,723 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:04,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:55:04,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:55:04,936 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:55:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash 749013372, now seen corresponding path program 1 times [2021-10-16 02:55:04,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:55:04,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260844038] [2021-10-16 02:55:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:04,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:55:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:55:04,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:55:04,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:55:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:05,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:55:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:55:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:05,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:55:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:05,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:55:05,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260844038] [2021-10-16 02:55:05,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260844038] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:05,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:05,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:55:05,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940341472] [2021-10-16 02:55:05,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:55:05,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:55:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:55:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:55:05,647 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-16 02:55:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:05,727 INFO L93 Difference]: Finished difference Result 319 states and 420 transitions. [2021-10-16 02:55:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:55:05,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 [2021-10-16 02:55:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:05,732 INFO L225 Difference]: With dead ends: 319 [2021-10-16 02:55:05,732 INFO L226 Difference]: Without dead ends: 317 [2021-10-16 02:55:05,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:55:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-10-16 02:55:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 235. [2021-10-16 02:55:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3504273504273505) internal successors, (316), 234 states have internal predecessors, (316), 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) [2021-10-16 02:55:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2021-10-16 02:55:05,777 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 51 [2021-10-16 02:55:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:05,778 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2021-10-16 02:55:05,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-16 02:55:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2021-10-16 02:55:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-16 02:55:05,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:05,782 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:05,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:55:05,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:55:05,998 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:55:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:05,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1849817445, now seen corresponding path program 1 times [2021-10-16 02:55:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:55:05,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493252474] [2021-10-16 02:55:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:06,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:55:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:55:06,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:55:06,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:55:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:55:07,749 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:55:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:55:09,437 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:55:09,437 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:55:09,438 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:09,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:09,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:09,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:55:09,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:55:09,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:55:09,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:55:09 BoogieIcfgContainer [2021-10-16 02:55:09,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:55:09,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:55:09,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:55:09,903 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:55:09,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:52" (3/4) ... [2021-10-16 02:55:09,906 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:55:10,082 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:55:10,082 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:55:10,084 INFO L168 Benchmark]: Toolchain (without parser) took 21863.03 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 27.3 MB in the beginning and 62.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,085 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:55:10,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.04 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 43.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.64 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 39.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,086 INFO L168 Benchmark]: Boogie Preprocessor took 52.59 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 37.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,087 INFO L168 Benchmark]: RCFGBuilder took 2868.90 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 48.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,087 INFO L168 Benchmark]: TraceAbstraction took 17771.72 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 48.0 MB in the beginning and 48.7 MB in the end (delta: -678.6 kB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,088 INFO L168 Benchmark]: Witness Printer took 179.64 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 62.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:10,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 881.04 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 43.1 MB in the end (delta: -16.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.64 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 39.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.59 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 37.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2868.90 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 48.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17771.72 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 48.0 MB in the beginning and 48.7 MB in the end (delta: -678.6 kB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 179.64 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 62.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 840]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L53] int methAndRunningLastTime ; [L261] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L465] int pumpRunning = 0; [L466] int systemActive = 1; [L638] int waterLevel = 1; [L639] int methaneLevelCritical = 0; [L845] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L919] int retValue_acc ; [L920] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L827] int retValue_acc ; [L830] retValue_acc = 1 [L831] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] tmp = valid_product() [L928] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L734] int splverifierCounter ; [L735] int tmp ; [L736] int tmp___0 ; [L737] int tmp___1 ; [L738] int tmp___2 ; [L741] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L751] tmp = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L656] COND TRUE waterLevel < 2 [L657] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L472] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L504] COND TRUE ! pumpRunning [L616] int retValue_acc ; [L617] int tmp ; [L618] int tmp___0 ; [L718] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L721] COND FALSE !(waterLevel < 2) [L725] retValue_acc = 0 [L726] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] tmp = isHighWaterSensorDry() [L624] COND FALSE !(\read(tmp)) [L627] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L629] retValue_acc = tmp___0 [L630] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] tmp = isHighWaterLevel() [L508] COND TRUE \read(tmp) [L535] int tmp ; [L560] int retValue_acc ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] retValue_acc = isMethaneLevelCritical() [L566] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L539] tmp = isMethaneAlarm() [L541] COND FALSE !(\read(tmp)) [L529] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L68] tmp = isMethaneLevelCritical() [L70] COND FALSE !(\read(tmp)) [L86] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L751] tmp = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L668] COND FALSE !(\read(methaneLevelCritical)) [L671] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L472] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L644] COND TRUE waterLevel > 0 [L645] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L504] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L68] tmp = isMethaneLevelCritical() [L70] COND TRUE \read(tmp) [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L72] tmp___0 = isPumpRunning() [L74] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L75] COND FALSE !(\read(methAndRunningLastTime)) [L80] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L743] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L745] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L751] tmp = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L761] tmp___0 = __VERIFIER_nondet_int() [L763] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L771] tmp___2 = __VERIFIER_nondet_int() [L773] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L472] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L644] COND TRUE waterLevel > 0 [L645] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L479] COND TRUE \read(systemActive) [L501] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L504] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L63] int tmp ; [L64] int tmp___0 ; [L677] int retValue_acc ; [L680] retValue_acc = methaneLevelCritical [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L68] tmp = isMethaneLevelCritical() [L70] COND TRUE \read(tmp) [L571] int retValue_acc ; [L574] retValue_acc = pumpRunning [L575] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L72] tmp___0 = isPumpRunning() [L74] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L75] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L840] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 17446.7ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 37.0ms, AutomataDifference: 4517.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 874 SDtfs, 1080 SDslu, 2268 SDs, 0 SdLazy, 253 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3489.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 423.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=11, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 362.3ms AutomataMinimizationTime, 11 MinimizatonAttempts, 986 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 328.2ms SsaConstructionTime, 3130.5ms SatisfiabilityAnalysisTime, 3027.6ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 1156 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2325 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:55:10,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d968ada7-16df-4d1e-a606-a3ecce681904/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...