./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8 --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 b5076d679b37839f733750e31fc3798a3b068ae0 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8 --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 b5076d679b37839f733750e31fc3798a3b068ae0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:49:20,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:49:20,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:49:20,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:49:20,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:49:20,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:49:20,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:49:20,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:49:20,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:49:20,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:49:20,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:49:20,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:49:20,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:49:20,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:49:20,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:49:20,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:49:20,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:49:20,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:49:20,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:49:20,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:49:20,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:49:20,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:49:20,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:49:20,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:49:20,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:49:20,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:49:20,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:49:20,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:49:20,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:49:20,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:49:20,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:49:20,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:49:20,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:49:20,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:49:20,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:49:20,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:49:20,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:49:20,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:49:20,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:49:20,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:49:20,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:49:20,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:49:20,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:49:20,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:49:20,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:49:20,739 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:49:20,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:49:20,740 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:49:20,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:49:20,740 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:49:20,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:49:20,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:49:20,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:49:20,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:49:20,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:49:20,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:49:20,751 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:49:20,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:49:20,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:49:20,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:49:20,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:49:20,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:49:20,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:49:20,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:49:20,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:49:20,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:49:20,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:49:20,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:49:20,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:49:20,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:49:20,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:49:20,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:49:20,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:49:20,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:49:20,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:49:20,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:49:20,761 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:49:20,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:49:20,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:49:20,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:49:20,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:49:20,762 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_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5076d679b37839f733750e31fc3798a3b068ae0 [2021-10-13 07:49:21,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:49:21,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:49:21,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:49:21,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:49:21,112 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:49:21,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-10-13 07:49:21,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/3b146e872/538a5f9b9dd748f89cdf1aebd301625f/FLAGa092c06de [2021-10-13 07:49:21,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:49:21,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-10-13 07:49:21,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/3b146e872/538a5f9b9dd748f89cdf1aebd301625f/FLAGa092c06de [2021-10-13 07:49:22,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/3b146e872/538a5f9b9dd748f89cdf1aebd301625f [2021-10-13 07:49:22,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:49:22,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:49:22,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:22,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:49:22,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:49:22,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:22" (1/1) ... [2021-10-13 07:49:22,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1689639c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:22, skipping insertion in model container [2021-10-13 07:49:22,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:22" (1/1) ... [2021-10-13 07:49:22,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:49:22,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:49:22,486 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_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4518,4531] [2021-10-13 07:49:22,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:22,603 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:49:22,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5602c233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:22, skipping insertion in model container [2021-10-13 07:49:22,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:22,611 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:49:22,613 INFO L168 Benchmark]: Toolchain (without parser) took 451.36 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 88.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:22,614 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:49:22,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.39 ms. Allocated memory is still 117.4 MB. Free memory was 86.0 MB in the beginning and 88.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:22,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 448.39 ms. Allocated memory is still 117.4 MB. Free memory was 86.0 MB in the beginning and 88.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 540]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:49:25,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:49:25,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:49:25,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:49:25,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:49:25,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:49:25,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:49:25,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:49:25,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:49:25,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:49:25,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:49:25,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:49:25,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:49:25,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:49:25,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:49:25,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:49:25,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:49:25,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:49:25,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:49:25,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:49:25,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:49:25,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:49:25,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:49:25,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:49:25,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:49:25,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:49:25,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:49:25,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:49:25,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:49:25,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:49:25,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:49:25,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:49:25,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:49:25,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:49:25,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:49:25,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:49:25,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:49:25,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:49:25,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:49:25,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:49:25,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:49:25,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:49:25,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:49:25,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:49:25,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:49:25,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:49:25,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:49:25,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:49:25,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:49:25,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:49:25,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:49:25,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:49:25,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:49:25,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:49:25,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:49:25,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:49:25,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:49:25,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:49:25,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:49:25,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:49:25,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:49:25,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:49:25,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:49:25,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:49:25,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:49:25,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:49:25,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:49:25,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:49:25,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:49:25,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:49:25,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:49:25,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:49:25,587 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:49:25,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:49:25,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:49:25,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:49:25,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:49:25,589 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_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5076d679b37839f733750e31fc3798a3b068ae0 [2021-10-13 07:49:26,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:49:26,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:49:26,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:49:26,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:49:26,100 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:49:26,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-10-13 07:49:26,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/b4ad02411/2ae97f94726f4db1ae876abe0e8beacf/FLAGdb2f6c32c [2021-10-13 07:49:26,981 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:49:26,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-10-13 07:49:27,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/b4ad02411/2ae97f94726f4db1ae876abe0e8beacf/FLAGdb2f6c32c [2021-10-13 07:49:27,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/data/b4ad02411/2ae97f94726f4db1ae876abe0e8beacf [2021-10-13 07:49:27,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:49:27,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:49:27,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:27,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:49:27,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:49:27,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:27,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795a8f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27, skipping insertion in model container [2021-10-13 07:49:27,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:27,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:49:27,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:49:27,621 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_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4518,4531] [2021-10-13 07:49:27,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:27,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:49:27,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:49:27,822 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_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4518,4531] [2021-10-13 07:49:27,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:27,877 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:49:27,905 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_202480b5-7801-4476-accd-4322e674cc3d/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4518,4531] [2021-10-13 07:49:27,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:49:27,983 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:49:27,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27 WrapperNode [2021-10-13 07:49:27,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:49:27,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:49:27,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:49:27,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:49:27,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:49:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:49:28,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:49:28,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:49:28,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:49:28,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:49:28,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:49:28,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:49:28,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (1/1) ... [2021-10-13 07:49:28,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:49:28,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:49:28,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:49:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:49:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:49:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:49:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:49:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:49:31,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:49:31,399 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-10-13 07:49:31,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:49:31 BoogieIcfgContainer [2021-10-13 07:49:31,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:49:31,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:49:31,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:49:31,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:49:31,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:49:27" (1/3) ... [2021-10-13 07:49:31,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d85d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:49:31, skipping insertion in model container [2021-10-13 07:49:31,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:49:27" (2/3) ... [2021-10-13 07:49:31,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d85d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:49:31, skipping insertion in model container [2021-10-13 07:49:31,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:49:31" (3/3) ... [2021-10-13 07:49:31,414 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2021-10-13 07:49:31,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:49:31,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:49:31,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:49:31,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:49:31,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:49:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 81 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:49:31,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:31,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:31,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash -816697532, now seen corresponding path program 1 times [2021-10-13 07:49:31,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:31,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967205634] [2021-10-13 07:49:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:31,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:31,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:31,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:31,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:49:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:31,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:49:31,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:31,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:31,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:31,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967205634] [2021-10-13 07:49:31,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967205634] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:31,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:31,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:49:31,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717555816] [2021-10-13 07:49:31,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:49:31,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:49:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:49:32,003 INFO L87 Difference]: Start difference. First operand has 82 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 81 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:32,032 INFO L93 Difference]: Finished difference Result 157 states and 240 transitions. [2021-10-13 07:49:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:49:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:49:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:32,052 INFO L225 Difference]: With dead ends: 157 [2021-10-13 07:49:32,053 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 07:49:32,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:49:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 07:49:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 07:49:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 77 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2021-10-13 07:49:32,102 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 18 [2021-10-13 07:49:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:32,103 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2021-10-13 07:49:32,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2021-10-13 07:49:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:49:32,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:32,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:32,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:32,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:32,319 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:32,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1035533501, now seen corresponding path program 1 times [2021-10-13 07:49:32,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:32,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038256357] [2021-10-13 07:49:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:32,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:32,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:32,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:32,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:49:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:32,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:49:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:32,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:32,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:32,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038256357] [2021-10-13 07:49:32,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038256357] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:32,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:49:32,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437334959] [2021-10-13 07:49:32,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:49:32,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:49:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:32,730 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:32,746 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2021-10-13 07:49:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:49:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:32,748 INFO L225 Difference]: With dead ends: 78 [2021-10-13 07:49:32,748 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:49:32,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:49:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 07:49:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-10-13 07:49:32,769 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 19 [2021-10-13 07:49:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:32,769 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-10-13 07:49:32,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2021-10-13 07:49:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:49:32,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:32,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:32,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:32,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:32,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:32,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1153900874, now seen corresponding path program 1 times [2021-10-13 07:49:32,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:32,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600574448] [2021-10-13 07:49:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:32,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:32,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:33,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:49:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:49:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:33,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:33,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:33,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600574448] [2021-10-13 07:49:33,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600574448] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:33,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:33,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:49:33,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470422964] [2021-10-13 07:49:33,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:49:33,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:49:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:33,537 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:33,548 INFO L93 Difference]: Finished difference Result 65 states and 95 transitions. [2021-10-13 07:49:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:33,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 07:49:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:33,550 INFO L225 Difference]: With dead ends: 65 [2021-10-13 07:49:33,550 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:49:33,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:49:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 07:49:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2021-10-13 07:49:33,558 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 24 [2021-10-13 07:49:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:33,558 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2021-10-13 07:49:33,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2021-10-13 07:49:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:49:33,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:33,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:33,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:33,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:33,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1264883623, now seen corresponding path program 1 times [2021-10-13 07:49:33,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:33,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364054751] [2021-10-13 07:49:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:33,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:33,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:33,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:33,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:49:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:34,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:49:34,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:34,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:34,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:34,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364054751] [2021-10-13 07:49:34,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364054751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:34,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:34,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:49:34,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831043550] [2021-10-13 07:49:34,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:49:34,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:49:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:34,200 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:34,271 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2021-10-13 07:49:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:49:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:34,273 INFO L225 Difference]: With dead ends: 87 [2021-10-13 07:49:34,273 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 07:49:34,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 07:49:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-13 07:49:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 55 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2021-10-13 07:49:34,284 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 25 [2021-10-13 07:49:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:34,285 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2021-10-13 07:49:34,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2021-10-13 07:49:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:49:34,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:34,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:34,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:34,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:34,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash -703728504, now seen corresponding path program 1 times [2021-10-13 07:49:34,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:34,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437862476] [2021-10-13 07:49:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:34,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:34,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:34,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:34,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:49:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:34,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:49:34,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:34,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:34,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:34,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437862476] [2021-10-13 07:49:34,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437862476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:34,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:34,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:49:34,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780337906] [2021-10-13 07:49:34,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:49:34,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:34,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:49:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:49:34,993 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:35,082 INFO L93 Difference]: Finished difference Result 145 states and 205 transitions. [2021-10-13 07:49:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:49:35,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:49:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:35,089 INFO L225 Difference]: With dead ends: 145 [2021-10-13 07:49:35,090 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 07:49:35,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:49:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 07:49:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 59. [2021-10-13 07:49:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 58 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2021-10-13 07:49:35,112 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 31 [2021-10-13 07:49:35,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:35,112 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2021-10-13 07:49:35,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2021-10-13 07:49:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:49:35,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:35,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:35,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:35,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:35,341 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 229735205, now seen corresponding path program 1 times [2021-10-13 07:49:35,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:35,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361485362] [2021-10-13 07:49:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:35,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:35,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:35,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:49:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:35,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:49:35,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:35,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:35,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361485362] [2021-10-13 07:49:35,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361485362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:35,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:35,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:49:35,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473548752] [2021-10-13 07:49:35,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:49:35,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:49:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:49:35,967 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:36,103 INFO L93 Difference]: Finished difference Result 275 states and 393 transitions. [2021-10-13 07:49:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:49:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 07:49:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:36,112 INFO L225 Difference]: With dead ends: 275 [2021-10-13 07:49:36,112 INFO L226 Difference]: Without dead ends: 223 [2021-10-13 07:49:36,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:49:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-13 07:49:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 103. [2021-10-13 07:49:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.392156862745098) internal successors, (142), 102 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2021-10-13 07:49:36,164 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 31 [2021-10-13 07:49:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:36,165 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2021-10-13 07:49:36,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2021-10-13 07:49:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:49:36,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:36,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:36,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:36,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:36,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1892298141, now seen corresponding path program 1 times [2021-10-13 07:49:36,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:36,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910941160] [2021-10-13 07:49:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:36,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:36,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:36,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:36,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:49:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:36,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:49:36,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:36,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:36,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:36,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910941160] [2021-10-13 07:49:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910941160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:36,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:36,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:49:36,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400616551] [2021-10-13 07:49:36,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:49:36,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:49:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:49:36,887 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:37,073 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2021-10-13 07:49:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:49:37,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:49:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:37,078 INFO L225 Difference]: With dead ends: 376 [2021-10-13 07:49:37,079 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 07:49:37,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:49:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 07:49:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 102. [2021-10-13 07:49:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3762376237623761) internal successors, (139), 101 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 139 transitions. [2021-10-13 07:49:37,113 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 139 transitions. Word has length 32 [2021-10-13 07:49:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:37,114 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 139 transitions. [2021-10-13 07:49:37,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 139 transitions. [2021-10-13 07:49:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:49:37,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:37,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:37,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:37,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:37,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1659899010, now seen corresponding path program 1 times [2021-10-13 07:49:37,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:37,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032269022] [2021-10-13 07:49:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:37,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:37,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:37,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:37,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:49:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:37,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:49:37,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:37,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:37,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:37,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032269022] [2021-10-13 07:49:37,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032269022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:37,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:37,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:49:37,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324277381] [2021-10-13 07:49:37,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:49:37,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:37,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:49:37,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:49:37,885 INFO L87 Difference]: Start difference. First operand 102 states and 139 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:37,938 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2021-10-13 07:49:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:49:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 07:49:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:37,940 INFO L225 Difference]: With dead ends: 279 [2021-10-13 07:49:37,940 INFO L226 Difference]: Without dead ends: 184 [2021-10-13 07:49:37,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:49:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-13 07:49:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 106. [2021-10-13 07:49:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.361904761904762) internal successors, (143), 105 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2021-10-13 07:49:37,967 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 32 [2021-10-13 07:49:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:37,967 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2021-10-13 07:49:37,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2021-10-13 07:49:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:49:37,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:37,968 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:37,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:38,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:38,188 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:38,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1073092996, now seen corresponding path program 1 times [2021-10-13 07:49:38,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:38,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034716420] [2021-10-13 07:49:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:38,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:38,191 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:38,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:49:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:38,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:49:38,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:38,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:38,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:38,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034716420] [2021-10-13 07:49:38,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034716420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:38,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:38,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:49:38,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424309485] [2021-10-13 07:49:38,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:49:38,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:49:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:38,774 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:38,837 INFO L93 Difference]: Finished difference Result 338 states and 459 transitions. [2021-10-13 07:49:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:49:38,838 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 32 [2021-10-13 07:49:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:38,840 INFO L225 Difference]: With dead ends: 338 [2021-10-13 07:49:38,840 INFO L226 Difference]: Without dead ends: 239 [2021-10-13 07:49:38,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:49:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-13 07:49:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 189. [2021-10-13 07:49:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.351063829787234) internal successors, (254), 188 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 254 transitions. [2021-10-13 07:49:38,875 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 254 transitions. Word has length 32 [2021-10-13 07:49:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:38,875 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 254 transitions. [2021-10-13 07:49:38,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 254 transitions. [2021-10-13 07:49:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:49:38,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:38,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:49:38,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:39,093 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash -389810492, now seen corresponding path program 1 times [2021-10-13 07:49:39,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:39,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375390510] [2021-10-13 07:49:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:39,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:39,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:39,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:49:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:49:39,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:49:39,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:49:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:39,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:49:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:49:39,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:49:39,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375390510] [2021-10-13 07:49:39,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375390510] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:49:39,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:49:39,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:49:39,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120985465] [2021-10-13 07:49:39,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:49:39,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:49:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:49:39,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:39,678 INFO L87 Difference]: Start difference. First operand 189 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:49:39,750 INFO L93 Difference]: Finished difference Result 307 states and 412 transitions. [2021-10-13 07:49:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:49:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-13 07:49:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:49:39,753 INFO L225 Difference]: With dead ends: 307 [2021-10-13 07:49:39,753 INFO L226 Difference]: Without dead ends: 305 [2021-10-13 07:49:39,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:49:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-13 07:49:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 239. [2021-10-13 07:49:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3781512605042017) internal successors, (328), 238 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 328 transitions. [2021-10-13 07:49:39,804 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 328 transitions. Word has length 33 [2021-10-13 07:49:39,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:49:39,805 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 328 transitions. [2021-10-13 07:49:39,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:49:39,805 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 328 transitions. [2021-10-13 07:49:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:49:39,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:49:39,807 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-10-13 07:49:39,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:40,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:40,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:49:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:49:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 967205496, now seen corresponding path program 1 times [2021-10-13 07:49:40,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:49:40,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365595651] [2021-10-13 07:49:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:49:40,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:49:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:49:40,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:49:40,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:49:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:49:41,491 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:49:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:49:42,872 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:49:42,873 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:49:42,874 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:49:42,876 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:49:42,876 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:49:42,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:49:43,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:49:43,108 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:49:43,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:49:43 BoogieIcfgContainer [2021-10-13 07:49:43,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:49:43,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:49:43,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:49:43,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:49:43,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:49:31" (3/4) ... [2021-10-13 07:49:43,365 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:49:43,532 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:49:43,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:49:43,534 INFO L168 Benchmark]: Toolchain (without parser) took 16333.69 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 39.4 MB in the beginning and 44.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,535 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:49:43,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 33.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.96 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 30.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,536 INFO L168 Benchmark]: Boogie Preprocessor took 72.45 ms. Allocated memory is still 60.8 MB. Free memory was 30.5 MB in the beginning and 28.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,537 INFO L168 Benchmark]: RCFGBuilder took 3260.40 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 54.5 MB in the end (delta: -26.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,537 INFO L168 Benchmark]: TraceAbstraction took 11958.52 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 54.1 MB in the beginning and 65.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,538 INFO L168 Benchmark]: Witness Printer took 170.30 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 44.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:49:43,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 781.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 33.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.96 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 30.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.45 ms. Allocated memory is still 60.8 MB. Free memory was 30.5 MB in the beginning and 28.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3260.40 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 54.5 MB in the end (delta: -26.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11958.52 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 54.1 MB in the beginning and 65.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 170.30 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 44.9 MB in the end (delta: 21.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 286]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L294] int pumpRunning = 0; [L295] int systemActive = 1; [L681] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] int retValue_acc ; [L260] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L266] tmp = valid_product() [L268] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L883] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L448] int splverifierCounter ; [L449] int tmp ; [L450] int tmp___0 ; [L451] int tmp___1 ; [L452] int tmp___2 ; [L455] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L457] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L459] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L465] tmp = __VERIFIER_nondet_int() [L467] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L105] COND TRUE waterLevel < 2 [L106] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L475] tmp___0 = __VERIFIER_nondet_int() [L477] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L117] COND FALSE !(\read(methaneLevelCritical)) [L120] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L485] tmp___2 = __VERIFIER_nondet_int() [L487] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L302] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L309] COND TRUE \read(systemActive) [L331] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] COND TRUE ! pumpRunning [L428] int retValue_acc ; [L429] int tmp ; [L430] int tmp___0 ; [L167] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND FALSE !(waterLevel < 2) [L174] retValue_acc = 0 [L175] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] tmp = isHighWaterSensorDry() [L436] COND FALSE !(\read(tmp)) [L439] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] retValue_acc = tmp___0 [L442] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] tmp = isHighWaterLevel() [L338] COND TRUE \read(tmp) [L359] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L888] int tmp ; [L889] int tmp___0 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L900] COND FALSE !(\read(methAndRunningLastTime)) [L905] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L457] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L459] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L465] tmp = __VERIFIER_nondet_int() [L467] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L475] tmp___0 = __VERIFIER_nondet_int() [L477] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L485] tmp___2 = __VERIFIER_nondet_int() [L487] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L302] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L93] COND TRUE waterLevel > 0 [L94] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] COND TRUE \read(systemActive) [L331] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L334] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L888] int tmp ; [L889] int tmp___0 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L900] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L286] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 286]: 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: 286]: 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, 82 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11634.8ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 47.8ms, AutomataDifference: 826.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 667 SDtfs, 744 SDslu, 995 SDs, 0 SdLazy, 116 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 235.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=10, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 277.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 287.2ms SsaConstructionTime, 2656.1ms SatisfiabilityAnalysisTime, 2301.5ms InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 988 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2060 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:49:43,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202480b5-7801-4476-accd-4322e674cc3d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...