./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:40:00,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:40:00,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:40:00,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:40:00,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:40:00,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:40:00,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:40:00,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:40:00,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:40:00,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:40:00,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:40:00,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:40:00,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:40:00,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:40:00,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:40:00,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:40:00,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:40:00,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:40:00,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:40:00,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:40:00,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:40:00,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:40:00,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:40:00,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:40:00,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:40:00,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:40:00,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:40:00,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:40:00,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:40:00,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:40:00,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:40:00,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:40:00,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:40:00,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:40:00,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:40:00,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:40:00,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:40:00,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:40:00,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:40:00,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:40:00,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:40:00,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:40:00,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:40:00,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:40:00,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:40:00,858 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:40:00,858 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:40:00,859 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:40:00,859 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:40:00,859 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:40:00,859 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:40:00,860 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:40:00,861 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:40:00,861 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:40:00,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:40:00,862 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:40:00,862 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:40:00,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:40:00,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:40:00,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:40:00,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:40:00,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:40:00,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:40:00,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:40:00,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:40:00,865 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:40:00,865 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:40:00,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:40:00,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:40:00,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:40:00,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:40:00,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:40:00,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:00,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:40:00,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:40:00,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:40:00,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:40:00,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:40:00,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:40:00,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:40:00,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:40:00,871 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-07 01:40:01,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:40:01,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:40:01,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:40:01,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:40:01,299 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:40:01,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-07 01:40:01,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/c06646619/2289c5c46acc4c05bc293e22508e0fad/FLAG1df197a85 [2021-11-07 01:40:02,224 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:40:02,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-07 01:40:02,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/c06646619/2289c5c46acc4c05bc293e22508e0fad/FLAG1df197a85 [2021-11-07 01:40:02,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/c06646619/2289c5c46acc4c05bc293e22508e0fad [2021-11-07 01:40:02,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:40:02,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:40:02,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:02,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:40:02,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:40:02,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:02" (1/1) ... [2021-11-07 01:40:02,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bd2925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:02, skipping insertion in model container [2021-11-07 01:40:02,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:02" (1/1) ... [2021-11-07 01:40:02,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:40:02,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:40:03,139 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-07 01:40:03,282 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-07 01:40:03,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:03,305 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:40:03,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52112f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:03, skipping insertion in model container [2021-11-07 01:40:03,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:03,307 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:40:03,309 INFO L168 Benchmark]: Toolchain (without parser) took 916.05 ms. Allocated memory is still 96.5 MB. Free memory was 64.1 MB in the beginning and 62.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:40:03,311 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 57.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:40:03,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.20 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 62.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:40:03,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 57.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 905.20 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 62.0 MB in the end (delta: 1.9 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: 736]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:40:05,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:40:05,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:40:05,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:40:05,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:40:05,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:40:05,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:40:05,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:40:05,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:40:05,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:40:05,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:40:05,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:40:05,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:40:05,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:40:05,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:40:05,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:40:05,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:40:05,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:40:05,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:40:05,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:40:05,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:40:05,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:40:06,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:40:06,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:40:06,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:40:06,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:40:06,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:40:06,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:40:06,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:40:06,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:40:06,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:40:06,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:40:06,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:40:06,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:40:06,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:40:06,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:40:06,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:40:06,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:40:06,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:40:06,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:40:06,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:40:06,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:40:06,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:40:06,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:40:06,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:40:06,069 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:40:06,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:40:06,070 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:40:06,073 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:40:06,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:40:06,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:40:06,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:40:06,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:40:06,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:40:06,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:40:06,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:40:06,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:40:06,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:40:06,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:40:06,080 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:40:06,080 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:40:06,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:40:06,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:40:06,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:40:06,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:40:06,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:40:06,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:40:06,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:40:06,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:06,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:40:06,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:40:06,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:40:06,084 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:40:06,084 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:06,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:40:06,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:40:06,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:40:06,086 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-07 01:40:06,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:40:06,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:40:06,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:40:06,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:40:06,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:40:06,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-07 01:40:06,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/a11824460/5b508acaed9c44429c6b99bae6bf6288/FLAG51264d0df [2021-11-07 01:40:07,668 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:40:07,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-07 01:40:07,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/a11824460/5b508acaed9c44429c6b99bae6bf6288/FLAG51264d0df [2021-11-07 01:40:07,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/data/a11824460/5b508acaed9c44429c6b99bae6bf6288 [2021-11-07 01:40:07,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:40:07,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:40:07,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:07,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:40:07,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:40:07,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:07" (1/1) ... [2021-11-07 01:40:07,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c3b8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:07, skipping insertion in model container [2021-11-07 01:40:07,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:40:07" (1/1) ... [2021-11-07 01:40:07,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:40:07,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:40:08,289 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-07 01:40:08,430 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-07 01:40:08,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:08,460 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:40:08,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:40:08,513 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-07 01:40:08,600 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-07 01:40:08,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:08,609 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:40:08,636 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-07 01:40:08,726 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_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-07 01:40:08,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:40:08,784 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:40:08,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08 WrapperNode [2021-11-07 01:40:08,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:40:08,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:08,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:40:08,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:40:08,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:08,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:08,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:40:08,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:40:08,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:40:08,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:40:08,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:08,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:08,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:08,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:09,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:09,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:09,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:09,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:40:09,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:40:09,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:40:09,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:40:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (1/1) ... [2021-11-07 01:40:09,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:40:09,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:09,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:40:09,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:40:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:40:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:40:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:40:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:40:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:40:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:40:09,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:40:16,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:16,564 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 01:40:16,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:16 BoogieIcfgContainer [2021-11-07 01:40:16,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:16,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:16,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:16,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:16,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:40:07" (1/3) ... [2021-11-07 01:40:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b9cb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:16, skipping insertion in model container [2021-11-07 01:40:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:40:08" (2/3) ... [2021-11-07 01:40:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b9cb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:16, skipping insertion in model container [2021-11-07 01:40:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:16" (3/3) ... [2021-11-07 01:40:16,585 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2021-11-07 01:40:16,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:16,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:40:16,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:16,670 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:40:16,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:40:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:40:16,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:16,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:16,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 01:40:16,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:16,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575853831] [2021-11-07 01:40:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:16,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:16,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:16,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:40:16,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:16,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:17,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:17,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575853831] [2021-11-07 01:40:17,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575853831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:17,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:17,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:40:17,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115980911] [2021-11-07 01:40:17,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:40:17,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:17,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:40:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:17,044 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:17,131 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 01:40:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:40:17,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 01:40:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:17,154 INFO L225 Difference]: With dead ends: 402 [2021-11-07 01:40:17,154 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 01:40:17,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 01:40:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 01:40:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 01:40:17,217 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 01:40:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:17,217 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 01:40:17,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 01:40:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:40:17,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:17,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:17,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:17,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:17,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 01:40:17,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:17,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524921587] [2021-11-07 01:40:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:17,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:17,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:17,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:17,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:40:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:17,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:17,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:17,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:17,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:17,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524921587] [2021-11-07 01:40:17,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524921587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:17,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:17,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:40:17,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274943458] [2021-11-07 01:40:17,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:17,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:17,956 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:22,439 INFO L93 Difference]: Finished difference Result 502 states and 660 transitions. [2021-11-07 01:40:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-07 01:40:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:22,445 INFO L225 Difference]: With dead ends: 502 [2021-11-07 01:40:22,445 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 01:40:22,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:40:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 01:40:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2021-11-07 01:40:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.3423728813559321) internal successors, (396), 300 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2021-11-07 01:40:22,474 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 396 transitions. Word has length 12 [2021-11-07 01:40:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:22,475 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 396 transitions. [2021-11-07 01:40:22,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 396 transitions. [2021-11-07 01:40:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:40:22,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:22,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:22,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:40:22,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:22,688 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 627335073, now seen corresponding path program 1 times [2021-11-07 01:40:22,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:22,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068335399] [2021-11-07 01:40:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:22,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:22,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:22,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:40:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:22,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:22,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:23,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:23,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:23,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068335399] [2021-11-07 01:40:23,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068335399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:23,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:23,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:40:23,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634550110] [2021-11-07 01:40:23,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:40:23,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:40:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:40:23,334 INFO L87 Difference]: Start difference. First operand 301 states and 396 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:23,541 INFO L93 Difference]: Finished difference Result 513 states and 674 transitions. [2021-11-07 01:40:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-07 01:40:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:23,545 INFO L225 Difference]: With dead ends: 513 [2021-11-07 01:40:23,545 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 01:40:23,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 01:40:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2021-11-07 01:40:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 301 states have (on average 1.282392026578073) internal successors, (386), 306 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 386 transitions. [2021-11-07 01:40:23,576 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 386 transitions. Word has length 44 [2021-11-07 01:40:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:23,576 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 386 transitions. [2021-11-07 01:40:23,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 386 transitions. [2021-11-07 01:40:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:40:23,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:23,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:23,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:23,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:23,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -317553387, now seen corresponding path program 1 times [2021-11-07 01:40:23,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:23,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004581680] [2021-11-07 01:40:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:23,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:23,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:23,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:23,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:40:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:40:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:24,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:25,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:25,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004581680] [2021-11-07 01:40:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004581680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:25,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:40:25,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938945285] [2021-11-07 01:40:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:40:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:40:25,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:25,065 INFO L87 Difference]: Start difference. First operand 307 states and 386 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:25,215 INFO L93 Difference]: Finished difference Result 505 states and 628 transitions. [2021-11-07 01:40:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 44 [2021-11-07 01:40:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:25,219 INFO L225 Difference]: With dead ends: 505 [2021-11-07 01:40:25,220 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 01:40:25,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 01:40:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 295. [2021-11-07 01:40:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 294 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 366 transitions. [2021-11-07 01:40:25,241 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 366 transitions. Word has length 44 [2021-11-07 01:40:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:25,242 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 366 transitions. [2021-11-07 01:40:25,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 366 transitions. [2021-11-07 01:40:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:40:25,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:25,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:25,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:25,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -575718825, now seen corresponding path program 1 times [2021-11-07 01:40:25,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:25,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870615331] [2021-11-07 01:40:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:25,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:25,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:40:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:25,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:25,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:25,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:25,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:25,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:26,002 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:40:26,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:40:26,094 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:40:26,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:40:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:26,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:26,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:26,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870615331] [2021-11-07 01:40:26,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870615331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:26,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:26,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:40:26,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220896684] [2021-11-07 01:40:26,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:26,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:26,469 INFO L87 Difference]: Start difference. First operand 295 states and 366 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:37,076 INFO L93 Difference]: Finished difference Result 620 states and 749 transitions. [2021-11-07 01:40:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:40:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-07 01:40:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:37,080 INFO L225 Difference]: With dead ends: 620 [2021-11-07 01:40:37,081 INFO L226 Difference]: Without dead ends: 456 [2021-11-07 01:40:37,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:40:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-07 01:40:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 294. [2021-11-07 01:40:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 288 states have (on average 1.2638888888888888) internal successors, (364), 293 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 364 transitions. [2021-11-07 01:40:37,098 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 364 transitions. Word has length 44 [2021-11-07 01:40:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:37,098 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 364 transitions. [2021-11-07 01:40:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 364 transitions. [2021-11-07 01:40:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:40:37,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:37,102 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:37,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:37,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:37,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash 474525043, now seen corresponding path program 1 times [2021-11-07 01:40:37,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:37,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632843492] [2021-11-07 01:40:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:37,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:37,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:37,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:37,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:40:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:37,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:37,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:37,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:38,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:38,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632843492] [2021-11-07 01:40:38,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632843492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:38,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:38,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:40:38,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070239876] [2021-11-07 01:40:38,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:40:38,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:40:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:40:38,238 INFO L87 Difference]: Start difference. First operand 294 states and 364 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:38,398 INFO L93 Difference]: Finished difference Result 587 states and 733 transitions. [2021-11-07 01:40:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:38,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 71 [2021-11-07 01:40:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:38,406 INFO L225 Difference]: With dead ends: 587 [2021-11-07 01:40:38,406 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 01:40:38,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 01:40:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-11-07 01:40:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2040816326530612) internal successors, (354), 299 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 354 transitions. [2021-11-07 01:40:38,432 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 354 transitions. Word has length 71 [2021-11-07 01:40:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:38,435 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 354 transitions. [2021-11-07 01:40:38,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 354 transitions. [2021-11-07 01:40:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:40:38,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:38,443 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:38,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:38,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:38,662 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 01:40:38,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:38,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871759661] [2021-11-07 01:40:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:38,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:38,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:38,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:38,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:40:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:39,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:39,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:39,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:39,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:39,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871759661] [2021-11-07 01:40:39,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871759661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:39,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:39,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:39,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934446169] [2021-11-07 01:40:39,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:39,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:39,540 INFO L87 Difference]: Start difference. First operand 300 states and 354 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:39,606 INFO L93 Difference]: Finished difference Result 558 states and 665 transitions. [2021-11-07 01:40:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:39,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 71 [2021-11-07 01:40:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:39,610 INFO L225 Difference]: With dead ends: 558 [2021-11-07 01:40:39,610 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 01:40:39,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 01:40:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-07 01:40:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 297 states have (on average 1.202020202020202) internal successors, (357), 302 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 357 transitions. [2021-11-07 01:40:39,625 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 357 transitions. Word has length 71 [2021-11-07 01:40:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:39,625 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 357 transitions. [2021-11-07 01:40:39,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 357 transitions. [2021-11-07 01:40:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:40:39,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:39,627 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:39,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:39,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:39,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1065048653, now seen corresponding path program 1 times [2021-11-07 01:40:39,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:39,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220637395] [2021-11-07 01:40:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:39,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:39,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:39,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:40:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:40,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:40,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:40,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:40,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:40,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220637395] [2021-11-07 01:40:40,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220637395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:40,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [442479831] [2021-11-07 01:40:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:40,896 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:40,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:40,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:40,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:40:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:41,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:41,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:41,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:42,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [442479831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:42,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517870405] [2021-11-07 01:40:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:42,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:42,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:40:42,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:40:42,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:40:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:42,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:42,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:42,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:42,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:42,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:40:42,958 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:40:42,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:40:43,107 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:40:43,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:40:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:43,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:40:43,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517870405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:43,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:40:43,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:40:43,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940392453] [2021-11-07 01:40:43,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:43,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:43,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:43,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:40:43,413 INFO L87 Difference]: Start difference. First operand 303 states and 357 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:50,797 INFO L93 Difference]: Finished difference Result 465 states and 547 transitions. [2021-11-07 01:40:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:40:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:40:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:50,802 INFO L225 Difference]: With dead ends: 465 [2021-11-07 01:40:50,802 INFO L226 Difference]: Without dead ends: 440 [2021-11-07 01:40:50,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:40:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-07 01:40:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 305. [2021-11-07 01:40:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 1.2006688963210703) internal successors, (359), 304 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 359 transitions. [2021-11-07 01:40:50,817 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 359 transitions. Word has length 74 [2021-11-07 01:40:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:50,818 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 359 transitions. [2021-11-07 01:40:50,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 359 transitions. [2021-11-07 01:40:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:40:50,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:50,820 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:50,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 01:40:51,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:40:51,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:51,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:40:51,425 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash -786181332, now seen corresponding path program 1 times [2021-11-07 01:40:51,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:51,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367244638] [2021-11-07 01:40:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:51,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:51,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:40:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:51,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:51,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:52,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:40:52,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:52,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367244638] [2021-11-07 01:40:52,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367244638] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:52,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097890004] [2021-11-07 01:40:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:52,732 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:52,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:52,733 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:52,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:40:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:53,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:53,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:40:53,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:40:54,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2097890004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:54,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:54,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:40:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839831487] [2021-11-07 01:40:54,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:54,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:54,328 INFO L87 Difference]: Start difference. First operand 305 states and 359 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:58,521 INFO L93 Difference]: Finished difference Result 692 states and 822 transitions. [2021-11-07 01:40:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:40:58,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 106 [2021-11-07 01:40:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:58,526 INFO L225 Difference]: With dead ends: 692 [2021-11-07 01:40:58,527 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 01:40:58,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:40:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 01:40:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 380. [2021-11-07 01:40:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 374 states have (on average 1.2005347593582887) internal successors, (449), 379 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 449 transitions. [2021-11-07 01:40:58,556 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 449 transitions. Word has length 106 [2021-11-07 01:40:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:58,558 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 449 transitions. [2021-11-07 01:40:58,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 449 transitions. [2021-11-07 01:40:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:40:58,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:58,560 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:58,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:58,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:58,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:58,980 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:40:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash 530496366, now seen corresponding path program 1 times [2021-11-07 01:40:58,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:58,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928529315] [2021-11-07 01:40:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:58,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:58,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:58,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:58,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:40:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:59,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:59,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:00,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:00,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:00,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928529315] [2021-11-07 01:41:00,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928529315] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:00,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653022961] [2021-11-07 01:41:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:00,456 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:00,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:41:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:01,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:01,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:01,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1653022961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:01,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830167645] [2021-11-07 01:41:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:01,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:01,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:01,965 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:01,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:41:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:02,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:41:02,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:41:03,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:41:03,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830167645] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:03,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:41:03,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:41:03,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120717142] [2021-11-07 01:41:03,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:41:03,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:41:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:41:03,378 INFO L87 Difference]: Start difference. First operand 380 states and 449 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:03,721 INFO L93 Difference]: Finished difference Result 718 states and 859 transitions. [2021-11-07 01:41:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:41:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 113 [2021-11-07 01:41:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:03,725 INFO L225 Difference]: With dead ends: 718 [2021-11-07 01:41:03,725 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:41:03,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:41:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:41:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:41:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.1963350785340314) internal successors, (457), 387 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 457 transitions. [2021-11-07 01:41:03,745 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 457 transitions. Word has length 113 [2021-11-07 01:41:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:03,745 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 457 transitions. [2021-11-07 01:41:03,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 457 transitions. [2021-11-07 01:41:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:41:03,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:03,747 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:03,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:03,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:04,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:04,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:04,353 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:41:04,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1097324242, now seen corresponding path program 2 times [2021-11-07 01:41:04,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:04,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944953293] [2021-11-07 01:41:04,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:41:04,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:04,357 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:04,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:41:05,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:41:05,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:05,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:41:05,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:05,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:06,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:06,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944953293] [2021-11-07 01:41:06,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944953293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:06,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1978161769] [2021-11-07 01:41:06,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:41:06,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:06,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:06,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:06,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:41:08,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:41:08,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:08,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:41:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:08,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:41:08,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1978161769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:08,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036000442] [2021-11-07 01:41:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:41:08,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:08,933 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:41:10,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:41:10,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:10,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:41:10,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:41:10,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:41:11,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036000442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:11,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:41:11,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:41:11,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920656114] [2021-11-07 01:41:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:41:11,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:41:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:41:11,665 INFO L87 Difference]: Start difference. First operand 388 states and 457 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 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) [2021-11-07 01:41:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:15,921 INFO L93 Difference]: Finished difference Result 1066 states and 1283 transitions. [2021-11-07 01:41:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:41:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 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) Word has length 121 [2021-11-07 01:41:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:15,929 INFO L225 Difference]: With dead ends: 1066 [2021-11-07 01:41:15,929 INFO L226 Difference]: Without dead ends: 732 [2021-11-07 01:41:15,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:41:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-07 01:41:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 410. [2021-11-07 01:41:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.188118811881188) internal successors, (480), 409 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 480 transitions. [2021-11-07 01:41:15,959 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 480 transitions. Word has length 121 [2021-11-07 01:41:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:15,959 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 480 transitions. [2021-11-07 01:41:15,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 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) [2021-11-07 01:41:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 480 transitions. [2021-11-07 01:41:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:41:15,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:15,961 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:15,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:16,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:16,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-07 01:41:16,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:16,578 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:41:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1558698834, now seen corresponding path program 3 times [2021-11-07 01:41:16,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:16,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5917604] [2021-11-07 01:41:16,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:41:16,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:16,580 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:16,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:41:21,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:41:21,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:41:21,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:41:21,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:41:22,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:41:24,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:24,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5917604] [2021-11-07 01:41:24,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5917604] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:24,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1762481573] [2021-11-07 01:41:24,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:41:24,375 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:24,376 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:24,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:42:22,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:42:22,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:42:22,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:42:22,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:42:23,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:42:23,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1762481573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:23,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899352152] [2021-11-07 01:42:23,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:42:23,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:42:23,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:42:23,580 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:42:23,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd99ba7b-56b0-4e87-a2b6-88fb11814ef4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process