./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8 --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 f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:11,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:11,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:11,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:11,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:11,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:11,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:11,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:11,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:11,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:11,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:11,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:11,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:11,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:11,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:11,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:11,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:11,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:11,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:11,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:11,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:11,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:11,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:11,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:11,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:11,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:11,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:11,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:11,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:11,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:11,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:11,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:11,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:11,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:11,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:11,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:11,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:11,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:11,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:11,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:11,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:11,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:57:11,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:11,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:11,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:11,484 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:11,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:11,485 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:11,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:57:11,485 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:11,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:11,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:57:11,487 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:57:11,487 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:11,488 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:57:11,488 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:57:11,488 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:57:11,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:11,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:11,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:57:11,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:11,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:11,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:11,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:11,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:11,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:11,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:11,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:11,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:11,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:11,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:11,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:11,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:11,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:11,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:11,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:11,496 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:57:11,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:57:11,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:11,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:11,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:11,497 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 [2021-11-07 01:57:11,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:11,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:11,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:11,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:11,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:11,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-11-07 01:57:11,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/27c23bed7/b9012f4edf5a4507aa1414ea9e2eeecd/FLAGe5e303d2f [2021-11-07 01:57:12,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:12,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-11-07 01:57:12,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/27c23bed7/b9012f4edf5a4507aa1414ea9e2eeecd/FLAGe5e303d2f [2021-11-07 01:57:12,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/27c23bed7/b9012f4edf5a4507aa1414ea9e2eeecd [2021-11-07 01:57:12,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:12,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:12,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:12,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:12,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:12,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667d4fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:12, skipping insertion in model container [2021-11-07 01:57:12,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:12" (1/1) ... [2021-11-07 01:57:12,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:12,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:13,161 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-11-07 01:57:13,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:13,192 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:57:13,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@314a09ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:13, skipping insertion in model container [2021-11-07 01:57:13,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:13,193 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:57:13,196 INFO L168 Benchmark]: Toolchain (without parser) took 485.72 ms. Allocated memory is still 98.6 MB. Free memory was 63.9 MB in the beginning and 70.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:13,197 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:13,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.68 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 70.8 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:13,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.68 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 70.8 MB in the end (delta: -7.1 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8 --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 f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:15,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:15,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:15,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:15,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:15,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:15,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:16,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:16,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:16,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:16,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:16,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:16,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:16,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:16,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:16,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:16,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:16,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:16,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:16,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:16,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:16,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:16,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:16,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:16,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:16,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:16,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:16,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:16,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:16,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:16,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:16,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:16,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:16,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:16,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:16,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:16,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:16,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:16,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:16,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:16,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:16,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:57:16,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:16,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:16,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:16,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:16,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:16,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:16,159 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:16,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:16,160 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:16,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:16,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:16,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:16,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:16,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:16,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:16,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:16,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:16,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:57:16,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:57:16,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:16,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:16,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:16,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:16,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:16,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:57:16,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:16,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:16,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:16,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:16,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:16,168 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:57:16,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:16,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:16,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:16,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:16,170 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 [2021-11-07 01:57:16,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:16,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:16,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:16,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:16,658 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:16,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-11-07 01:57:16,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/e77ca7551/9dbddfefc3a54a8dadb7c0f5c99cab90/FLAGc85b4a1ea [2021-11-07 01:57:17,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:17,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-11-07 01:57:17,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/e77ca7551/9dbddfefc3a54a8dadb7c0f5c99cab90/FLAGc85b4a1ea [2021-11-07 01:57:17,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/data/e77ca7551/9dbddfefc3a54a8dadb7c0f5c99cab90 [2021-11-07 01:57:17,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:17,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:17,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:17,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:17,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:17,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:17" (1/1) ... [2021-11-07 01:57:17,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2e535a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:17, skipping insertion in model container [2021-11-07 01:57:17,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:17" (1/1) ... [2021-11-07 01:57:17,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:17,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:18,160 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-11-07 01:57:18,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:18,206 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:57:18,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:18,313 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-11-07 01:57:18,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:18,347 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:57:18,429 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_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-11-07 01:57:18,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:18,464 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:57:18,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18 WrapperNode [2021-11-07 01:57:18,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:18,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:18,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:57:18,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:57:18,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:18,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:57:18,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:57:18,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:57:18,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:57:18,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:57:18,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:57:18,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:57:18,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (1/1) ... [2021-11-07 01:57:18,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:18,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:57:18,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:57:18,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:57:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:57:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:57:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:57:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:21,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:21,200 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-11-07 01:57:21,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:21 BoogieIcfgContainer [2021-11-07 01:57:21,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:21,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:21,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:21,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:21,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:17" (1/3) ... [2021-11-07 01:57:21,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6d5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:21, skipping insertion in model container [2021-11-07 01:57:21,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:18" (2/3) ... [2021-11-07 01:57:21,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6d5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:21, skipping insertion in model container [2021-11-07 01:57:21,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:21" (3/3) ... [2021-11-07 01:57:21,229 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2021-11-07 01:57:21,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:21,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 01:57:21,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:21,312 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:57:21,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:57:21,331 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) [2021-11-07 01:57:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:57:21,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:21,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:21,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2021-11-07 01:57:21,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:21,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456104339] [2021-11-07 01:57:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:21,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:21,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:21,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:21,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:57:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:21,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:57:21,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:21,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:21,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:21,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456104339] [2021-11-07 01:57:21,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456104339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:21,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:21,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:57:21,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565903155] [2021-11-07 01:57:21,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:57:21,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:57:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:21,868 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) [2021-11-07 01:57:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:21,916 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-11-07 01:57:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:57:21,918 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 [2021-11-07 01:57:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:21,935 INFO L225 Difference]: With dead ends: 168 [2021-11-07 01:57:21,935 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 01:57:21,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:57:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 01:57:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-07 01:57:21,997 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) [2021-11-07 01:57:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-11-07 01:57:22,005 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-11-07 01:57:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:22,006 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-11-07 01:57:22,006 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) [2021-11-07 01:57:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-11-07 01:57:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:57:22,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:22,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:22,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:22,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:22,236 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2021-11-07 01:57:22,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:22,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624881258] [2021-11-07 01:57:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:22,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:22,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:22,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:22,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:57:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:22,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:22,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:22,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:22,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:22,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624881258] [2021-11-07 01:57:22,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624881258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:22,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:22,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:22,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217442445] [2021-11-07 01:57:22,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:22,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:22,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:22,639 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) [2021-11-07 01:57:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:22,675 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-11-07 01:57:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:22,676 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 [2021-11-07 01:57:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:22,680 INFO L225 Difference]: With dead ends: 83 [2021-11-07 01:57:22,680 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 01:57:22,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 01:57:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-07 01:57:22,694 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) [2021-11-07 01:57:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-11-07 01:57:22,695 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-11-07 01:57:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:22,696 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-11-07 01:57:22,696 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) [2021-11-07 01:57:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-11-07 01:57:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:57:22,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:22,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:22,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:22,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:22,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2021-11-07 01:57:22,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:22,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310702459] [2021-11-07 01:57:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:22,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:22,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:22,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:57:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:23,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:23,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:23,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:23,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:23,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310702459] [2021-11-07 01:57:23,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310702459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:23,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:23,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:23,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900296439] [2021-11-07 01:57:23,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:23,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:23,331 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) [2021-11-07 01:57:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:23,408 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-11-07 01:57:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:23,410 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 [2021-11-07 01:57:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:23,411 INFO L225 Difference]: With dead ends: 68 [2021-11-07 01:57:23,411 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 01:57:23,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 01:57:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-07 01:57:23,423 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) [2021-11-07 01:57:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-11-07 01:57:23,424 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-11-07 01:57:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-11-07 01:57:23,425 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) [2021-11-07 01:57:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-11-07 01:57:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:57:23,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:23,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:23,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:23,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:23,643 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2021-11-07 01:57:23,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:23,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459764701] [2021-11-07 01:57:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:23,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:23,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:23,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:23,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:57:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:23,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:24,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:24,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:24,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459764701] [2021-11-07 01:57:24,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459764701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:24,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:24,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:57:24,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676703541] [2021-11-07 01:57:24,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:57:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:57:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:24,124 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) [2021-11-07 01:57:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:24,201 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-11-07 01:57:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:57:24,202 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 [2021-11-07 01:57:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:24,203 INFO L225 Difference]: With dead ends: 89 [2021-11-07 01:57:24,204 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 01:57:24,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:57:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 01:57:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-11-07 01:57:24,224 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) [2021-11-07 01:57:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-11-07 01:57:24,225 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-11-07 01:57:24,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:24,226 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-11-07 01:57:24,226 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) [2021-11-07 01:57:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-11-07 01:57:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:57:24,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:24,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:24,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:24,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:24,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2021-11-07 01:57:24,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:24,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515040768] [2021-11-07 01:57:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:24,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:24,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:24,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:57:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:24,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:24,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:24,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:24,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:24,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515040768] [2021-11-07 01:57:24,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515040768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:24,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:24,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:57:24,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398065700] [2021-11-07 01:57:24,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:24,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:24,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:24,941 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) [2021-11-07 01:57:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:25,083 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2021-11-07 01:57:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:57:25,083 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 [2021-11-07 01:57:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:25,090 INFO L225 Difference]: With dead ends: 266 [2021-11-07 01:57:25,090 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 01:57:25,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 01:57:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2021-11-07 01:57:25,124 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) [2021-11-07 01:57:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-11-07 01:57:25,125 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2021-11-07 01:57:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:25,126 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-11-07 01:57:25,126 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) [2021-11-07 01:57:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-11-07 01:57:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:57:25,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:25,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:25,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:25,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:25,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash 331369175, now seen corresponding path program 1 times [2021-11-07 01:57:25,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:25,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32155934] [2021-11-07 01:57:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:25,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:25,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:25,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:25,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:57:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:25,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:25,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:25,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:25,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32155934] [2021-11-07 01:57:25,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32155934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:25,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:25,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:57:25,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256044981] [2021-11-07 01:57:25,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:25,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:25,831 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) [2021-11-07 01:57:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:25,981 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2021-11-07 01:57:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:57:25,982 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 [2021-11-07 01:57:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:25,984 INFO L225 Difference]: With dead ends: 280 [2021-11-07 01:57:25,985 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 01:57:25,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:57:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 01:57:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-11-07 01:57:26,012 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) [2021-11-07 01:57:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2021-11-07 01:57:26,013 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2021-11-07 01:57:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:26,013 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2021-11-07 01:57:26,014 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) [2021-11-07 01:57:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2021-11-07 01:57:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:57:26,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:26,017 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:26,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:26,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash 261712181, now seen corresponding path program 1 times [2021-11-07 01:57:26,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:26,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259847667] [2021-11-07 01:57:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:26,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:26,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:57:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:26,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:26,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:26,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:26,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:26,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259847667] [2021-11-07 01:57:26,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259847667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:26,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:26,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:57:26,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761676673] [2021-11-07 01:57:26,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:26,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:26,668 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) [2021-11-07 01:57:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:26,727 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-11-07 01:57:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:57:26,728 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 [2021-11-07 01:57:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:26,730 INFO L225 Difference]: With dead ends: 270 [2021-11-07 01:57:26,730 INFO L226 Difference]: Without dead ends: 176 [2021-11-07 01:57:26,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:57:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-07 01:57:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-11-07 01:57:26,743 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) [2021-11-07 01:57:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2021-11-07 01:57:26,744 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2021-11-07 01:57:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:26,745 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-11-07 01:57:26,745 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) [2021-11-07 01:57:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2021-11-07 01:57:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:57:26,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:26,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:26,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:26,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,959 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash -325093833, now seen corresponding path program 1 times [2021-11-07 01:57:26,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:26,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670774814] [2021-11-07 01:57:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:26,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:26,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:26,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:57:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:27,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:57:27,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:27,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:27,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:27,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670774814] [2021-11-07 01:57:27,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670774814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:27,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:27,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:57:27,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394845592] [2021-11-07 01:57:27,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:57:27,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:57:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:57:27,407 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) [2021-11-07 01:57:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:27,487 INFO L93 Difference]: Finished difference Result 288 states and 390 transitions. [2021-11-07 01:57:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:57:27,488 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 [2021-11-07 01:57:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:27,489 INFO L225 Difference]: With dead ends: 288 [2021-11-07 01:57:27,489 INFO L226 Difference]: Without dead ends: 188 [2021-11-07 01:57:27,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:57:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-07 01:57:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2021-11-07 01:57:27,517 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) [2021-11-07 01:57:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2021-11-07 01:57:27,518 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2021-11-07 01:57:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:27,518 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2021-11-07 01:57:27,519 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) [2021-11-07 01:57:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2021-11-07 01:57:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:57:27,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:27,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:27,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:27,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:27,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1604957511, now seen corresponding path program 1 times [2021-11-07 01:57:27,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:27,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520190847] [2021-11-07 01:57:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:27,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:27,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:27,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:27,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:57:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:28,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:57:28,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:28,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:28,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:28,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520190847] [2021-11-07 01:57:28,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520190847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:28,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:28,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:57:28,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202076091] [2021-11-07 01:57:28,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:28,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:28,245 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) [2021-11-07 01:57:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:28,302 INFO L93 Difference]: Finished difference Result 346 states and 468 transitions. [2021-11-07 01:57:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:28,303 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 [2021-11-07 01:57:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:28,304 INFO L225 Difference]: With dead ends: 346 [2021-11-07 01:57:28,304 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 01:57:28,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 01:57:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2021-11-07 01:57:28,339 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) [2021-11-07 01:57:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-11-07 01:57:28,341 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 257 transitions. Word has length 33 [2021-11-07 01:57:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:28,341 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-07 01:57:28,341 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) [2021-11-07 01:57:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 257 transitions. [2021-11-07 01:57:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:57:28,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:28,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:28,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:28,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:28,556 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -447661573, now seen corresponding path program 1 times [2021-11-07 01:57:28,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:28,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814922104] [2021-11-07 01:57:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:28,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:28,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:28,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:57:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:57:28,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:28,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:29,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:29,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814922104] [2021-11-07 01:57:29,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814922104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:29,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:29,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:57:29,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350779657] [2021-11-07 01:57:29,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:57:29,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:57:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:57:29,130 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) [2021-11-07 01:57:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:30,773 INFO L93 Difference]: Finished difference Result 788 states and 1036 transitions. [2021-11-07 01:57:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:57:30,774 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 [2021-11-07 01:57:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:30,784 INFO L225 Difference]: With dead ends: 788 [2021-11-07 01:57:30,784 INFO L226 Difference]: Without dead ends: 602 [2021-11-07 01:57:30,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:57:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-07 01:57:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 192. [2021-11-07 01:57:30,828 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) [2021-11-07 01:57:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2021-11-07 01:57:30,830 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 34 [2021-11-07 01:57:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:30,830 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2021-11-07 01:57:30,831 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) [2021-11-07 01:57:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2021-11-07 01:57:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:57:30,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:30,833 INFO L513 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] [2021-11-07 01:57:30,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:57:31,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:31,047 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2059222374, now seen corresponding path program 1 times [2021-11-07 01:57:31,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:31,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634812450] [2021-11-07 01:57:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:31,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:31,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:31,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:57:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:57:32,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:57:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:57:34,311 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:57:34,312 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:57:34,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:57:34,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:57:34,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:57:34,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:34,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:34,536 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:34,540 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:57:34,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:57:34 BoogieIcfgContainer [2021-11-07 01:57:34,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:57:34,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:57:34,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:57:34,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:57:34,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:21" (3/4) ... [2021-11-07 01:57:34,694 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:57:34,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:57:34,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:57:34,841 INFO L168 Benchmark]: Toolchain (without parser) took 17203.40 ms. Allocated memory was 65.0 MB in the beginning and 107.0 MB in the end (delta: 41.9 MB). Free memory was 43.2 MB in the beginning and 44.2 MB in the end (delta: -997.9 kB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,841 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:34,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.84 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 33.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.52 ms. Allocated memory is still 65.0 MB. Free memory was 33.1 MB in the beginning and 29.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,842 INFO L168 Benchmark]: Boogie Preprocessor took 96.17 ms. Allocated memory is still 65.0 MB. Free memory was 29.8 MB in the beginning and 46.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,843 INFO L168 Benchmark]: RCFGBuilder took 2551.80 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 46.5 MB in the beginning and 66.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,843 INFO L168 Benchmark]: TraceAbstraction took 13469.30 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 65.5 MB in the beginning and 64.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,844 INFO L168 Benchmark]: Witness Printer took 148.04 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 44.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:34,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 827.84 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 33.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.52 ms. Allocated memory is still 65.0 MB. Free memory was 33.1 MB in the beginning and 29.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.17 ms. Allocated memory is still 65.0 MB. Free memory was 29.8 MB in the beginning and 46.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2551.80 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 46.5 MB in the beginning and 66.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13469.30 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 65.5 MB in the beginning and 64.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. * Witness Printer took 148.04 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 44.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 13.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 801 SDtfs, 1246 SDslu, 1835 SDs, 0 SdLazy, 224 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 549 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 904 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 2.2s 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! [2021-11-07 01:57:34,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b559362-b8b4-47ae-ada1-ac61c1fb6a01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE