./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.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_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/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_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/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_a731713e-892d-4998-a9f2-134740df4bfe/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 8dbe51203231315b42884daa8d242df16dd4c19d ............................................................................................................................................ 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_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/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_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/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_a731713e-892d-4998-a9f2-134740df4bfe/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 8dbe51203231315b42884daa8d242df16dd4c19d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:08:23,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:23,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:23,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:23,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:23,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:23,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:23,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:23,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:23,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:23,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:23,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:23,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:23,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:23,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:23,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:23,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:23,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:23,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:23,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:23,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:23,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:23,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:23,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:23,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:23,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:23,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:23,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:23,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:23,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:23,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:23,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:23,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:23,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:23,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:23,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:23,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:23,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:23,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:23,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:23,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:23,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:08:23,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:23,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:23,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:23,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:23,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:23,492 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:23,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:08:23,493 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:23,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:23,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:08:23,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:08:23,494 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:23,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:08:23,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:08:23,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:08:23,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:23,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:23,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:23,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:23,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:23,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:23,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:23,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:23,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:23,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:23,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:23,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:23,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:23,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:23,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:23,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:23,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:23,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:23,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:23,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:08:23,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:08:23,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:23,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:23,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:23,503 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_a731713e-892d-4998-a9f2-134740df4bfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbe51203231315b42884daa8d242df16dd4c19d [2021-10-16 02:08:23,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:23,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:23,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:23,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:23,965 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:23,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-16 02:08:24,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/cb733814c/19628e796fb948a98ac20f3824348292/FLAG60523b6f3 [2021-10-16 02:08:24,759 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:24,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-16 02:08:24,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/cb733814c/19628e796fb948a98ac20f3824348292/FLAG60523b6f3 [2021-10-16 02:08:25,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/cb733814c/19628e796fb948a98ac20f3824348292 [2021-10-16 02:08:25,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:25,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:25,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:25,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:25,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:25,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:25" (1/1) ... [2021-10-16 02:08:25,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9bbefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:25, skipping insertion in model container [2021-10-16 02:08:25,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:25" (1/1) ... [2021-10-16 02:08:25,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:25,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:25,507 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_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-16 02:08:25,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:25,567 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 02:08:25,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6903a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:25, skipping insertion in model container [2021-10-16 02:08:25,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:25,569 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:08:25,573 INFO L168 Benchmark]: Toolchain (without parser) took 529.31 ms. Allocated memory is still 102.8 MB. Free memory was 70.7 MB in the beginning and 75.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:25,575 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 102.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:25,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.50 ms. Allocated memory is still 102.8 MB. Free memory was 70.4 MB in the beginning and 75.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:25,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 102.8 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.50 ms. Allocated memory is still 102.8 MB. Free memory was 70.4 MB in the beginning and 75.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 78]: 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 02:08:28,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:28,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:28,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:28,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:28,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:28,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:28,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:28,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:28,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:28,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:28,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:28,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:28,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:28,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:28,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:28,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:28,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:28,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:28,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:28,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:28,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:28,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:28,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:28,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:28,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:28,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:28,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:28,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:28,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:28,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:28,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:28,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:28,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:28,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:28,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:28,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:28,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:28,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:28,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:28,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:28,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:08:28,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:28,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:28,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:28,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:28,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:28,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:28,863 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:28,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:28,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:28,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:28,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:28,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:28,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:28,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:28,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:28,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:28,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:28,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:08:28,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:08:28,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:28,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:28,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:28,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:28,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:28,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:08:28,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:28,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:28,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:28,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:28,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:28,873 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:08:28,873 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:28,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:28,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:28,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:28,875 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_a731713e-892d-4998-a9f2-134740df4bfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbe51203231315b42884daa8d242df16dd4c19d [2021-10-16 02:08:29,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:29,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:29,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:29,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:29,517 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:29,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-16 02:08:29,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/2fc4d882c/78879f225217400d9def28469278dd6e/FLAG05f8bc218 [2021-10-16 02:08:30,439 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:30,443 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-16 02:08:30,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/2fc4d882c/78879f225217400d9def28469278dd6e/FLAG05f8bc218 [2021-10-16 02:08:30,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/data/2fc4d882c/78879f225217400d9def28469278dd6e [2021-10-16 02:08:30,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:30,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:30,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:30,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:30,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:30,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:30" (1/1) ... [2021-10-16 02:08:30,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e46ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:30, skipping insertion in model container [2021-10-16 02:08:30,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:30" (1/1) ... [2021-10-16 02:08:30,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:30,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:31,144 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_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-16 02:08:31,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:31,200 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:08:31,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:31,347 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_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-16 02:08:31,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:31,389 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:31,527 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_a731713e-892d-4998-a9f2-134740df4bfe/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-16 02:08:31,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:31,563 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:31,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31 WrapperNode [2021-10-16 02:08:31,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:31,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:31,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:31,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:31,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:31,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:31,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:31,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:31,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:31,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:31,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:31,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:31,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (1/1) ... [2021-10-16 02:08:31,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:31,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:31,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:08:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:34,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:34,804 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-16 02:08:34,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:34 BoogieIcfgContainer [2021-10-16 02:08:34,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:34,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:34,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:34,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:34,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:30" (1/3) ... [2021-10-16 02:08:34,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef8a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:34, skipping insertion in model container [2021-10-16 02:08:34,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:31" (2/3) ... [2021-10-16 02:08:34,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef8a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:34, skipping insertion in model container [2021-10-16 02:08:34,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:34" (3/3) ... [2021-10-16 02:08:34,827 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2021-10-16 02:08:34,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:34,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:08:34,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:34,905 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 02:08:34,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:08:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 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 02:08:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:08:34,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:34,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:34,936 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 02:08:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2021-10-16 02:08:34,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:34,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688913225] [2021-10-16 02:08:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:34,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:34,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:34,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:34,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:08:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:35,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:08:35,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:35,327 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 02:08:35,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:35,390 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 02:08:35,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:35,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688913225] [2021-10-16 02:08:35,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688913225] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:35,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:35,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:08:35,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955414291] [2021-10-16 02:08:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:08:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:08:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:08:35,425 INFO L87 Difference]: Start difference. First operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:08:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:35,452 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-10-16 02:08:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:08:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-16 02:08:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:35,466 INFO L225 Difference]: With dead ends: 168 [2021-10-16 02:08:35,467 INFO L226 Difference]: Without dead ends: 83 [2021-10-16 02:08:35,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 02:08:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-16 02:08:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-16 02:08:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 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 02:08:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-10-16 02:08:35,521 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-10-16 02:08:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:35,522 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-10-16 02:08:35,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:08:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-10-16 02:08:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:08:35,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:35,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:35,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:35,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:35,744 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 02:08:35,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:35,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2021-10-16 02:08:35,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:35,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859847353] [2021-10-16 02:08:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:35,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:35,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:35,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:35,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:08:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:36,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:36,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:36,112 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 02:08:36,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:36,193 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 02:08:36,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:36,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859847353] [2021-10-16 02:08:36,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859847353] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:36,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:36,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:08:36,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029664430] [2021-10-16 02:08:36,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:36,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:36,211 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 02:08:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:36,245 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-10-16 02:08:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:08:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:36,250 INFO L225 Difference]: With dead ends: 83 [2021-10-16 02:08:36,250 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 02:08:36,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 02:08:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-16 02:08:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 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 02:08:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-10-16 02:08:36,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-10-16 02:08:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:36,272 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-10-16 02:08:36,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 02:08:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-16 02:08:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:08:36,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:36,282 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] [2021-10-16 02:08:36,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:08:36,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:36,498 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 02:08:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2021-10-16 02:08:36,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:36,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240660237] [2021-10-16 02:08:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:36,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:36,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:36,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:36,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:08:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:36,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:36,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:36,827 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 02:08:36,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:36,917 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 02:08:36,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:36,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240660237] [2021-10-16 02:08:36,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240660237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:36,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:36,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:08:36,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877975588] [2021-10-16 02:08:36,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:36,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:36,922 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 02:08:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:36,962 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-10-16 02:08:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 22 [2021-10-16 02:08:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:36,972 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:08:36,972 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 02:08:36,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 02:08:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-16 02:08:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 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 02:08:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-10-16 02:08:36,981 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-10-16 02:08:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:36,982 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-10-16 02:08:36,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 02:08:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-10-16 02:08:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:08:36,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:36,984 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] [2021-10-16 02:08:37,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:37,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:37,199 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 02:08:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:37,200 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2021-10-16 02:08:37,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:37,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068060744] [2021-10-16 02:08:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:37,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:37,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:37,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:08:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:37,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:37,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:37,539 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 02:08:37,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:37,605 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 02:08:37,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:37,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068060744] [2021-10-16 02:08:37,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068060744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:37,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:37,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:08:37,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836801149] [2021-10-16 02:08:37,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:37,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:37,611 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 02:08:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:37,675 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-16 02:08:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:37,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-16 02:08:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:37,677 INFO L225 Difference]: With dead ends: 89 [2021-10-16 02:08:37,678 INFO L226 Difference]: Without dead ends: 58 [2021-10-16 02:08:37,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 02:08:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-16 02:08:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-16 02:08:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 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 02:08:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-10-16 02:08:37,691 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-10-16 02:08:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:37,692 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-10-16 02:08:37,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 02:08:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-10-16 02:08:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:08:37,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:37,694 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, 1, 1, 1, 1] [2021-10-16 02:08:37,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:37,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:37,910 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 02:08:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2021-10-16 02:08:37,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:37,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38748527] [2021-10-16 02:08:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:37,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:37,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:37,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:37,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:08:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:38,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:38,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:38,326 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 02:08:38,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:38,455 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 02:08:38,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:38,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38748527] [2021-10-16 02:08:38,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38748527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:38,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:38,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:08:38,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59701273] [2021-10-16 02:08:38,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:38,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:38,464 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:38,638 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2021-10-16 02:08:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:08:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 02:08:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:38,644 INFO L225 Difference]: With dead ends: 266 [2021-10-16 02:08:38,644 INFO L226 Difference]: Without dead ends: 216 [2021-10-16 02:08:38,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:08:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-16 02:08:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2021-10-16 02:08:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 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 02:08:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-10-16 02:08:38,678 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2021-10-16 02:08:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:38,679 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-10-16 02:08:38,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-10-16 02:08:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:08:38,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:38,681 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] [2021-10-16 02:08:38,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:38,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:38,896 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 02:08:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash 331369175, now seen corresponding path program 1 times [2021-10-16 02:08:38,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:38,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510260173] [2021-10-16 02:08:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:38,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:38,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:38,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:08:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:39,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:39,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:39,383 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 02:08:39,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:39,498 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 02:08:39,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:39,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510260173] [2021-10-16 02:08:39,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510260173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:39,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:08:39,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388629995] [2021-10-16 02:08:39,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:39,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:39,501 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:39,711 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2021-10-16 02:08:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:08:39,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:08:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:39,715 INFO L225 Difference]: With dead ends: 280 [2021-10-16 02:08:39,715 INFO L226 Difference]: Without dead ends: 278 [2021-10-16 02:08:39,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:08:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-16 02:08:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-10-16 02:08:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 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 02:08:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2021-10-16 02:08:39,753 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2021-10-16 02:08:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:39,754 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2021-10-16 02:08:39,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2021-10-16 02:08:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:08:39,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:39,756 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] [2021-10-16 02:08:39,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:39,963 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 02:08:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:39,964 INFO L82 PathProgramCache]: Analyzing trace with hash 261712181, now seen corresponding path program 1 times [2021-10-16 02:08:39,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:39,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546594688] [2021-10-16 02:08:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:39,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:39,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:40,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:08:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:40,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:40,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:40,388 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 02:08:40,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:40,472 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 02:08:40,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:40,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546594688] [2021-10-16 02:08:40,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546594688] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:40,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:40,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:08:40,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772908314] [2021-10-16 02:08:40,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:40,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:40,479 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:40,569 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-10-16 02:08:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:08:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 02:08:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:40,574 INFO L225 Difference]: With dead ends: 270 [2021-10-16 02:08:40,575 INFO L226 Difference]: Without dead ends: 176 [2021-10-16 02:08:40,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-16 02:08:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-10-16 02:08:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 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 02:08:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2021-10-16 02:08:40,617 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2021-10-16 02:08:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:40,617 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-10-16 02:08:40,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2021-10-16 02:08:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:08:40,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:40,624 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] [2021-10-16 02:08:40,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:40,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:40,838 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 02:08:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -325093833, now seen corresponding path program 1 times [2021-10-16 02:08:40,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:40,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28318729] [2021-10-16 02:08:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:40,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:40,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:40,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:40,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:08:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:41,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:08:41,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:41,234 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 02:08:41,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:41,341 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 02:08:41,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:41,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28318729] [2021-10-16 02:08:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28318729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:41,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:41,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:08:41,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504851881] [2021-10-16 02:08:41,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:08:41,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:08:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:08:41,345 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:41,399 INFO L93 Difference]: Finished difference Result 288 states and 390 transitions. [2021-10-16 02:08:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:41,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 02:08:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:41,401 INFO L225 Difference]: With dead ends: 288 [2021-10-16 02:08:41,401 INFO L226 Difference]: Without dead ends: 188 [2021-10-16 02:08:41,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-16 02:08:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2021-10-16 02:08:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3577981651376148) internal successors, (148), 109 states have internal predecessors, (148), 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 02:08:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2021-10-16 02:08:41,423 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2021-10-16 02:08:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:41,423 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2021-10-16 02:08:41,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2021-10-16 02:08:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:08:41,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:41,425 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] [2021-10-16 02:08:41,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:41,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:41,642 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 02:08:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:41,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1604957511, now seen corresponding path program 1 times [2021-10-16 02:08:41,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:41,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531724901] [2021-10-16 02:08:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:41,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:41,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:41,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:08:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:41,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:41,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:42,010 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 02:08:42,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:42,129 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 02:08:42,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:42,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531724901] [2021-10-16 02:08:42,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531724901] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:42,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:42,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:08:42,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079667978] [2021-10-16 02:08:42,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:42,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:42,131 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 02:08:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:42,198 INFO L93 Difference]: Finished difference Result 346 states and 468 transitions. [2021-10-16 02:08:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:08:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 33 [2021-10-16 02:08:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:42,201 INFO L225 Difference]: With dead ends: 346 [2021-10-16 02:08:42,201 INFO L226 Difference]: Without dead ends: 242 [2021-10-16 02:08:42,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-16 02:08:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2021-10-16 02:08:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3455497382198953) internal successors, (257), 191 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 02:08:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-10-16 02:08:42,226 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 257 transitions. Word has length 33 [2021-10-16 02:08:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:42,227 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-10-16 02:08:42,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 02:08:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 257 transitions. [2021-10-16 02:08:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 02:08:42,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:42,228 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] [2021-10-16 02:08:42,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:42,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:42,441 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 02:08:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash -447661573, now seen corresponding path program 1 times [2021-10-16 02:08:42,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:42,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417361156] [2021-10-16 02:08:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:42,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:42,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:42,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:08:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:42,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:08:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:42,883 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 02:08:42,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:43,030 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 02:08:43,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:43,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417361156] [2021-10-16 02:08:43,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417361156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:43,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:43,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:08:43,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338136984] [2021-10-16 02:08:43,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:08:43,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:08:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:08:43,032 INFO L87 Difference]: Start difference. First operand 192 states and 257 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:44,887 INFO L93 Difference]: Finished difference Result 788 states and 1036 transitions. [2021-10-16 02:08:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:08:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-16 02:08:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:44,895 INFO L225 Difference]: With dead ends: 788 [2021-10-16 02:08:44,895 INFO L226 Difference]: Without dead ends: 602 [2021-10-16 02:08:44,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 201.6ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:08:44,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-16 02:08:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 192. [2021-10-16 02:08:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3193717277486912) internal successors, (252), 191 states have internal predecessors, (252), 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 02:08:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2021-10-16 02:08:44,943 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 34 [2021-10-16 02:08:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:44,944 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2021-10-16 02:08:44,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2021-10-16 02:08:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-16 02:08:44,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:44,946 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] [2021-10-16 02:08:44,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:45,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:45,163 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 02:08:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2059222374, now seen corresponding path program 1 times [2021-10-16 02:08:45,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:45,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140334550] [2021-10-16 02:08:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:45,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:45,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:45,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:08:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:08:47,209 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:08:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:08:49,188 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:08:49,189 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:08:49,190 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:08:49,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:08:49,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:08:49,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:49,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:49,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:08:49,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:08:49 BoogieIcfgContainer [2021-10-16 02:08:49,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:08:49,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:08:49,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:08:49,616 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:08:49,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:34" (3/4) ... [2021-10-16 02:08:49,620 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:08:49,812 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:08:49,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:08:49,814 INFO L168 Benchmark]: Toolchain (without parser) took 19092.16 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.9 MB in the beginning and 60.5 MB in the end (delta: -26.6 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,814 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:49,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.31 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 49.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.38 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 46.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,816 INFO L168 Benchmark]: Boogie Preprocessor took 109.18 ms. Allocated memory is still 69.2 MB. Free memory was 46.3 MB in the beginning and 43.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,816 INFO L168 Benchmark]: RCFGBuilder took 3018.86 ms. Allocated memory is still 69.2 MB. Free memory was 43.6 MB in the beginning and 34.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,817 INFO L168 Benchmark]: TraceAbstraction took 14805.76 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 33.3 MB in the beginning and 40.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,817 INFO L168 Benchmark]: Witness Printer took 196.95 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 60.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:49,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 56.6 MB. Free memory is still 37.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 841.31 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 49.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.38 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 46.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.18 ms. Allocated memory is still 69.2 MB. Free memory was 46.3 MB in the beginning and 43.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3018.86 ms. Allocated memory is still 69.2 MB. Free memory was 43.6 MB in the beginning and 34.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14805.76 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 33.3 MB in the beginning and 40.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * Witness Printer took 196.95 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 60.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 21.4 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: 774]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L591] int pumpRunning = 0; [L592] int systemActive = 1; [L843] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] int retValue_acc ; [L917] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] int retValue_acc ; [L837] retValue_acc = 1 [L838] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE ! pumpRunning [L743] int retValue_acc ; [L744] int tmp ; [L745] int tmp___0 ; [L503] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(waterLevel < 2) [L510] retValue_acc = 0 [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] tmp = isHighWaterSensorDry() [L751] COND FALSE !(\read(tmp)) [L754] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] retValue_acc = tmp___0 [L757] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L633] tmp = isHighWaterLevel() [L635] COND TRUE \read(tmp) [L662] int tmp ; [L687] int retValue_acc ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = isMethaneLevelCritical() [L693] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] tmp = isMethaneAlarm() [L668] COND FALSE !(\read(tmp)) [L656] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L538] tmp = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L453] COND FALSE !(\read(methaneLevelCritical)) [L456] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L429] COND TRUE waterLevel > 0 [L430] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L698] int retValue_acc ; [L701] retValue_acc = pumpRunning [L702] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 774]: 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: 774]: 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, 87 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14525.3ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 35.8ms, AutomataDifference: 2737.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 801 SDtfs, 1246 SDslu, 1835 SDs, 0 SdLazy, 224 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1775.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 549 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 442.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 268.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 904 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 306.9ms SsaConstructionTime, 3208.4ms SatisfiabilityAnalysisTime, 2210.3ms InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 862 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2064 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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 02:08:49,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a731713e-892d-4998-a9f2-134740df4bfe/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...