./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:05,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:05,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:06,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:06,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:06,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:06,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:06,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:06,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:06,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:06,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:06,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:06,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:06,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:06,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:06,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:06,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:06,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:06,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:06,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:06,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:06,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:06,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:06,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:06,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:06,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:06,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:06,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:06,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:06,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:06,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:06,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:06,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:06,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:06,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:06,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:06,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:06,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:06,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:06,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:06,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:06,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:39:06,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:06,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:06,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:06,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:06,103 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:06,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:06,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:06,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:39:06,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:06,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:06,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:39:06,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:39:06,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:06,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:39:06,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:39:06,105 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:39:06,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:39:06,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:39:06,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:06,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:39:06,107 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:39:06,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:39:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:06,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:06,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:06,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:06,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:06,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:06,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:06,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:06,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:06,110 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:39:06,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:39:06,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:06,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:06,110 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2021-11-12 22:39:06,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:06,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:06,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:06,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:06,454 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:06,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-12 22:39:06,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/f1d4997f1/fcfdc9005e1c4b9a9934e003b417435d/FLAG49438e09a [2021-11-12 22:39:07,201 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:07,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-12 22:39:07,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/f1d4997f1/fcfdc9005e1c4b9a9934e003b417435d/FLAG49438e09a [2021-11-12 22:39:07,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/f1d4997f1/fcfdc9005e1c4b9a9934e003b417435d [2021-11-12 22:39:07,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:07,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:07,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:07,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:07,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:07,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:07" (1/1) ... [2021-11-12 22:39:07,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cb55c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:07, skipping insertion in model container [2021-11-12 22:39:07,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:07" (1/1) ... [2021-11-12 22:39:07,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:07,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:07,963 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2021-11-12 22:39:08,251 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2021-11-12 22:39:08,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:08,297 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) [2021-11-12 22:39:08,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d4299f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:08, skipping insertion in model container [2021-11-12 22:39:08,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:08,298 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:39:08,300 INFO L158 Benchmark]: Toolchain (without parser) took 910.85ms. Allocated memory is still 111.1MB. Free memory was 67.0MB in the beginning and 63.3MB in the end (delta: 3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:39:08,301 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:08,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 906.57ms. Allocated memory is still 111.1MB. Free memory was 66.7MB in the beginning and 63.3MB in the end (delta: 3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:39:08,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 906.57ms. Allocated memory is still 111.1MB. Free memory was 66.7MB in the beginning and 63.3MB in the end (delta: 3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:10,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:10,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:10,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:10,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:10,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:10,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:10,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:10,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:10,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:10,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:10,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:10,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:10,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:10,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:10,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:10,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:10,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:10,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:10,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:10,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:10,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:10,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:10,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:10,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:10,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:10,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:10,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:10,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:10,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:10,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:10,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:10,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:10,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:10,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:10,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:10,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:10,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:10,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:10,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:10,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:10,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:39:10,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:10,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:10,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:10,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:10,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:10,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:10,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:10,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:10,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:10,532 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:10,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:39:10,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:39:10,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:10,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:10,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:39:10,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:10,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:10,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:10,535 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:39:10,535 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:39:10,536 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:39:10,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:10,536 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:10,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:10,537 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:10,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:10,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:10,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:10,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:10,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:10,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:10,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:10,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:10,539 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:10,539 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:10,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:10,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:10,540 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2021-11-12 22:39:10,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:10,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:10,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:10,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:10,973 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:10,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-12 22:39:11,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/b9e40e3fc/8ab352a886ee4369a7b6a10d1dfa8bc9/FLAGe0f6ccb7f [2021-11-12 22:39:11,768 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:11,769 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-12 22:39:11,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/b9e40e3fc/8ab352a886ee4369a7b6a10d1dfa8bc9/FLAGe0f6ccb7f [2021-11-12 22:39:11,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/data/b9e40e3fc/8ab352a886ee4369a7b6a10d1dfa8bc9 [2021-11-12 22:39:11,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:11,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:11,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:11,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:11,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:11,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:11" (1/1) ... [2021-11-12 22:39:11,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8daa80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:11, skipping insertion in model container [2021-11-12 22:39:11,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:11" (1/1) ... [2021-11-12 22:39:11,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:12,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:12,547 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2021-11-12 22:39:12,899 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2021-11-12 22:39:12,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:12,938 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:39:12,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:13,002 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2021-11-12 22:39:13,135 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2021-11-12 22:39:13,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:13,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:13,196 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[33021,33034] [2021-11-12 22:39:13,301 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_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i[84583,84596] [2021-11-12 22:39:13,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:13,350 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:13,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13 WrapperNode [2021-11-12 22:39:13,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:13,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:13,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:13,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:13,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:13,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:13,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:13,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:13,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:13,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:13,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:13,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:13,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (1/1) ... [2021-11-12 22:39:13,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:13,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:13,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:39:13,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:39:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:39:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:39:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:39:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:39:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:39:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:39:13,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:39:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:14,090 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 22:39:20,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:20,343 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-12 22:39:20,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:20 BoogieIcfgContainer [2021-11-12 22:39:20,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:20,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:20,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:20,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:20,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:11" (1/3) ... [2021-11-12 22:39:20,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757e909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:20, skipping insertion in model container [2021-11-12 22:39:20,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:13" (2/3) ... [2021-11-12 22:39:20,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757e909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:20, skipping insertion in model container [2021-11-12 22:39:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:20" (3/3) ... [2021-11-12 22:39:20,357 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2021-11-12 22:39:20,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:20,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-12 22:39:20,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:20,430 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-12 22:39:20,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-12 22:39:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:39:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:39:20,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:20,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:39:20,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 22:39:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:20,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524355204] [2021-11-12 22:39:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:20,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:20,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:20,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:20,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:39:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:20,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:20,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:20,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:20,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:20,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:20,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524355204] [2021-11-12 22:39:20,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524355204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:20,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:20,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:39:20,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504169117] [2021-11-12 22:39:20,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:20,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:20,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:20,933 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-12 22:39:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:23,932 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-11-12 22:39:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-12 22:39:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:23,977 INFO L225 Difference]: With dead ends: 2235 [2021-11-12 22:39:23,977 INFO L226 Difference]: Without dead ends: 2233 [2021-11-12 22:39:23,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:23,982 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2325.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.27ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2809.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:23,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 33.27ms Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2809.56ms Time] [2021-11-12 22:39:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-12 22:39:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-11-12 22:39:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:39:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-11-12 22:39:24,659 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-11-12 22:39:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:24,659 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-11-12 22:39:24,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-12 22:39:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-11-12 22:39:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:39:24,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:24,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:39:24,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:24,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:24,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 22:39:24,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:24,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054472243] [2021-11-12 22:39:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:24,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:24,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:24,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:39:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:24,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:25,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:25,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:25,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:25,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:25,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054472243] [2021-11-12 22:39:25,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054472243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:25,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:25,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:39:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693793969] [2021-11-12 22:39:25,090 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:25,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:25,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:25,093 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-12 22:39:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:35,150 INFO L93 Difference]: Finished difference Result 3538 states and 5631 transitions. [2021-11-12 22:39:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:35,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-12 22:39:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:35,177 INFO L225 Difference]: With dead ends: 3538 [2021-11-12 22:39:35,177 INFO L226 Difference]: Without dead ends: 3538 [2021-11-12 22:39:35,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:35,179 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 4607 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8699.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.58ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9840.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:35,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 4902 Invalid, 2394 Unknown, 0 Unchecked, 44.58ms Time], IncrementalHoareTripleChecker [518 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 9840.29ms Time] [2021-11-12 22:39:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-12 22:39:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2090. [2021-11-12 22:39:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1076 states have (on average 2.0315985130111525) internal successors, (2186), 2084 states have internal predecessors, (2186), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:39:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3192 transitions. [2021-11-12 22:39:35,454 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3192 transitions. Word has length 3 [2021-11-12 22:39:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:35,454 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3192 transitions. [2021-11-12 22:39:35,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-12 22:39:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3192 transitions. [2021-11-12 22:39:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:39:35,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:35,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:35,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:35,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:35,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 22:39:35,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:35,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881151899] [2021-11-12 22:39:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:35,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:35,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:35,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:35,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:39:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:35,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:35,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:35,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:35,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881151899] [2021-11-12 22:39:35,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881151899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:35,875 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:35,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:39:35,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001523793] [2021-11-12 22:39:35,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:35,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:35,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:35,880 INFO L87 Difference]: Start difference. First operand 2090 states and 3192 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-12 22:39:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:38,472 INFO L93 Difference]: Finished difference Result 3257 states and 5376 transitions. [2021-11-12 22:39:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:38,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-12 22:39:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:38,501 INFO L225 Difference]: With dead ends: 3257 [2021-11-12 22:39:38,503 INFO L226 Difference]: Without dead ends: 3257 [2021-11-12 22:39:38,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:38,506 INFO L933 BasicCegarLoop]: 4868 mSDtfsCounter, 1806 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2113.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.51ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2499.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:38,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7126 Invalid, 1180 Unknown, 0 Unchecked, 23.51ms Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2499.84ms Time] [2021-11-12 22:39:38,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-12 22:39:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2043. [2021-11-12 22:39:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1076 states have (on average 1.9851301115241635) internal successors, (2136), 2037 states have internal predecessors, (2136), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:39:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3142 transitions. [2021-11-12 22:39:38,826 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3142 transitions. Word has length 8 [2021-11-12 22:39:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:38,826 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3142 transitions. [2021-11-12 22:39:38,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-12 22:39:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3142 transitions. [2021-11-12 22:39:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:39:38,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:38,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:38,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:39:39,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:39,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 22:39:39,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:39,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200086341] [2021-11-12 22:39:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:39,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:39,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:39,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:39,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:39:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:39,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:39,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:39:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:39,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:39,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:39,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200086341] [2021-11-12 22:39:39,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200086341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:39,315 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:39,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:39:39,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844456625] [2021-11-12 22:39:39,315 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:39,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:39,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:39,316 INFO L87 Difference]: Start difference. First operand 2043 states and 3142 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2021-11-12 22:39:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:46,785 INFO L93 Difference]: Finished difference Result 3287 states and 5370 transitions. [2021-11-12 22:39:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 8 [2021-11-12 22:39:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:46,813 INFO L225 Difference]: With dead ends: 3287 [2021-11-12 22:39:46,813 INFO L226 Difference]: Without dead ends: 3287 [2021-11-12 22:39:46,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:46,815 INFO L933 BasicCegarLoop]: 5028 mSDtfsCounter, 3022 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6477.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.18ms SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7315.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:46,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 7450 Invalid, 1700 Unknown, 0 Unchecked, 33.18ms Time], IncrementalHoareTripleChecker [514 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 7315.05ms Time] [2021-11-12 22:39:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-11-12 22:39:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2033. [2021-11-12 22:39:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1076 states have (on average 1.9730483271375465) internal successors, (2123), 2027 states have internal predecessors, (2123), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:39:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3129 transitions. [2021-11-12 22:39:47,079 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3129 transitions. Word has length 8 [2021-11-12 22:39:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:47,080 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3129 transitions. [2021-11-12 22:39:47,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2021-11-12 22:39:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3129 transitions. [2021-11-12 22:39:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:39:47,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:47,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:47,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:47,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:47,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-11-12 22:39:47,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:47,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749979131] [2021-11-12 22:39:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:47,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:47,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:47,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:47,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:39:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:47,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:47,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:47,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:47,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:47,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749979131] [2021-11-12 22:39:47,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749979131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:47,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:47,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:39:47,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460964607] [2021-11-12 22:39:47,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:47,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:47,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:47,630 INFO L87 Difference]: Start difference. First operand 2033 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-12 22:39:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:48,077 INFO L93 Difference]: Finished difference Result 3496 states and 5626 transitions. [2021-11-12 22:39:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:48,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-12 22:39:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:48,109 INFO L225 Difference]: With dead ends: 3496 [2021-11-12 22:39:48,110 INFO L226 Difference]: Without dead ends: 3496 [2021-11-12 22:39:48,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:48,111 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 1560 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.61ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 345.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:48,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6497 Invalid, 119 Unknown, 0 Unchecked, 14.61ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 345.55ms Time] [2021-11-12 22:39:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-12 22:39:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3203. [2021-11-12 22:39:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 1746 states have (on average 1.9558991981672393) internal successors, (3415), 3197 states have internal predecessors, (3415), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:39:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5421 transitions. [2021-11-12 22:39:48,566 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5421 transitions. Word has length 11 [2021-11-12 22:39:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:48,566 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5421 transitions. [2021-11-12 22:39:48,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-12 22:39:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5421 transitions. [2021-11-12 22:39:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:39:48,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:48,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:48,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:48,781 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-12 22:39:48,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:48,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106725755] [2021-11-12 22:39:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:48,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:48,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:48,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:39:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:48,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:48,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:48,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:49,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:49,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106725755] [2021-11-12 22:39:49,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106725755] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:49,018 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:49,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:39:49,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141498465] [2021-11-12 22:39:49,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:49,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:49,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:49,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:49,020 INFO L87 Difference]: Start difference. First operand 3203 states and 5421 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 22:39:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:50,045 INFO L93 Difference]: Finished difference Result 3357 states and 5561 transitions. [2021-11-12 22:39:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 13 [2021-11-12 22:39:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:50,089 INFO L225 Difference]: With dead ends: 3357 [2021-11-12 22:39:50,089 INFO L226 Difference]: Without dead ends: 3357 [2021-11-12 22:39:50,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:50,091 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2788 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 810.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.77ms SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 961.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:50,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 4523 Invalid, 513 Unknown, 0 Unchecked, 10.77ms Time], IncrementalHoareTripleChecker [500 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 961.24ms Time] [2021-11-12 22:39:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-11-12 22:39:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3143. [2021-11-12 22:39:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 1710 states have (on average 1.946783625730994) internal successors, (3329), 3137 states have internal predecessors, (3329), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:39:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5335 transitions. [2021-11-12 22:39:50,425 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5335 transitions. Word has length 13 [2021-11-12 22:39:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:50,426 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5335 transitions. [2021-11-12 22:39:50,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 22:39:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5335 transitions. [2021-11-12 22:39:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:39:50,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:50,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:50,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:50,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:50,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-11-12 22:39:50,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:50,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917389294] [2021-11-12 22:39:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:50,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:50,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:50,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:50,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:39:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:50,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:50,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:50,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:39:50,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:39:50,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:39:50,932 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:39:50,933 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 [2021-11-12 22:39:51,002 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 22:39:51,003 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 [2021-11-12 22:39:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:51,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:51,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:51,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917389294] [2021-11-12 22:39:51,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917389294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:51,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:51,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:39:51,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820387786] [2021-11-12 22:39:51,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:51,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:39:51,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:39:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:51,136 INFO L87 Difference]: Start difference. First operand 3143 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-12 22:39:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:57,059 INFO L93 Difference]: Finished difference Result 5460 states and 9683 transitions. [2021-11-12 22:39:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14 [2021-11-12 22:39:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:57,102 INFO L225 Difference]: With dead ends: 5460 [2021-11-12 22:39:57,103 INFO L226 Difference]: Without dead ends: 5460 [2021-11-12 22:39:57,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:39:57,104 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2664 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4901.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.27ms SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5734.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:57,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 9274 Invalid, 1222 Unknown, 0 Unchecked, 31.27ms Time], IncrementalHoareTripleChecker [504 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 5734.48ms Time] [2021-11-12 22:39:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-11-12 22:39:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3142. [2021-11-12 22:39:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 1709 states have (on average 1.9467524868344062) internal successors, (3327), 3136 states have internal predecessors, (3327), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:39:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5333 transitions. [2021-11-12 22:39:57,726 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 5333 transitions. Word has length 14 [2021-11-12 22:39:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 5333 transitions. [2021-11-12 22:39:57,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-12 22:39:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 5333 transitions. [2021-11-12 22:39:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:39:57,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:57,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:57,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:57,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:57,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:57,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 22:39:57,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:57,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520227193] [2021-11-12 22:39:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:57,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:57,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:57,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:39:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:58,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:58,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:58,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:58,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520227193] [2021-11-12 22:39:58,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520227193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:58,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:58,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:39:58,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729805829] [2021-11-12 22:39:58,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:58,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:58,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:58,236 INFO L87 Difference]: Start difference. First operand 3142 states and 5333 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:58,312 INFO L93 Difference]: Finished difference Result 3082 states and 5247 transitions. [2021-11-12 22:39:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:58,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:39:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:58,342 INFO L225 Difference]: With dead ends: 3082 [2021-11-12 22:39:58,342 INFO L226 Difference]: Without dead ends: 3082 [2021-11-12 22:39:58,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:58,344 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1935 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.31ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:58,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 4010 Invalid, 14 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 23.31ms Time] [2021-11-12 22:39:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-12 22:39:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3082. [2021-11-12 22:39:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 1673 states have (on average 1.9372384937238494) internal successors, (3241), 3076 states have internal predecessors, (3241), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:39:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5247 transitions. [2021-11-12 22:39:58,759 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5247 transitions. Word has length 18 [2021-11-12 22:39:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:58,760 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5247 transitions. [2021-11-12 22:39:58,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5247 transitions. [2021-11-12 22:39:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:39:58,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:58,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:58,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:58,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:58,977 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:39:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 22:39:58,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:58,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120921823] [2021-11-12 22:39:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:58,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:58,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:58,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:39:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:59,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:39:59,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:59,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:59,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:59,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120921823] [2021-11-12 22:39:59,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120921823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:59,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:59,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:39:59,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943413700] [2021-11-12 22:39:59,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:59,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:39:59,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:39:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:59,269 INFO L87 Difference]: Start difference. First operand 3082 states and 5247 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:00,338 INFO L93 Difference]: Finished difference Result 3054 states and 5191 transitions. [2021-11-12 22:40:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:40:00,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 22:40:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:00,351 INFO L225 Difference]: With dead ends: 3054 [2021-11-12 22:40:00,354 INFO L226 Difference]: Without dead ends: 3054 [2021-11-12 22:40:00,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:00,358 INFO L933 BasicCegarLoop]: 2911 mSDtfsCounter, 3802 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 831.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.24ms SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 984.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:00,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 6342 Invalid, 579 Unknown, 0 Unchecked, 18.24ms Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 984.28ms Time] [2021-11-12 22:40:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-12 22:40:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3052. [2021-11-12 22:40:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1657 states have (on average 1.9209414604707302) internal successors, (3183), 3046 states have internal predecessors, (3183), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5189 transitions. [2021-11-12 22:40:00,811 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5189 transitions. Word has length 20 [2021-11-12 22:40:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:00,812 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5189 transitions. [2021-11-12 22:40:00,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5189 transitions. [2021-11-12 22:40:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 22:40:00,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:00,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:00,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:01,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:01,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 22:40:01,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:01,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111836146] [2021-11-12 22:40:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:01,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:01,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:01,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:40:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:01,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:40:01,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:01,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:01,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:01,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:01,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111836146] [2021-11-12 22:40:01,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111836146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:01,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:01,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:40:01,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154564481] [2021-11-12 22:40:01,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:01,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:40:01,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:01,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:40:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:40:01,476 INFO L87 Difference]: Start difference. First operand 3052 states and 5189 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 22:40:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:06,765 INFO L93 Difference]: Finished difference Result 5485 states and 9686 transitions. [2021-11-12 22:40:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:40:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 22:40:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:06,793 INFO L225 Difference]: With dead ends: 5485 [2021-11-12 22:40:06,793 INFO L226 Difference]: Without dead ends: 5485 [2021-11-12 22:40:06,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:40:06,795 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 3447 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4365.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.32ms SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5132.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:06,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 6507 Invalid, 2890 Unknown, 0 Unchecked, 28.32ms Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 5132.90ms Time] [2021-11-12 22:40:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-11-12 22:40:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3048. [2021-11-12 22:40:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1657 states have (on average 1.916113458056729) internal successors, (3175), 3042 states have internal predecessors, (3175), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5181 transitions. [2021-11-12 22:40:07,471 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5181 transitions. Word has length 34 [2021-11-12 22:40:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:07,472 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 5181 transitions. [2021-11-12 22:40:07,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 22:40:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5181 transitions. [2021-11-12 22:40:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 22:40:07,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:07,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:07,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:07,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:07,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 22:40:07,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:07,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348019517] [2021-11-12 22:40:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:07,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:07,691 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:07,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:40:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:07,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:40:07,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:07,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:08,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:08,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:08,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348019517] [2021-11-12 22:40:08,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348019517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:08,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:08,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:40:08,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107673447] [2021-11-12 22:40:08,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:08,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:08,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:08,470 INFO L87 Difference]: Start difference. First operand 3048 states and 5181 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 22:40:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:20,214 INFO L93 Difference]: Finished difference Result 5539 states and 9703 transitions. [2021-11-12 22:40:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:40:20,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 22:40:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:20,232 INFO L225 Difference]: With dead ends: 5539 [2021-11-12 22:40:20,232 INFO L226 Difference]: Without dead ends: 5539 [2021-11-12 22:40:20,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:40:20,234 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 4551 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10226.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.75ms SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11503.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:20,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 12551 Invalid, 4724 Unknown, 0 Unchecked, 31.75ms Time], IncrementalHoareTripleChecker [1511 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 11503.88ms Time] [2021-11-12 22:40:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-11-12 22:40:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3044. [2021-11-12 22:40:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1657 states have (on average 1.911285455642728) internal successors, (3167), 3038 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5173 transitions. [2021-11-12 22:40:20,750 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5173 transitions. Word has length 34 [2021-11-12 22:40:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5173 transitions. [2021-11-12 22:40:20,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 22:40:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5173 transitions. [2021-11-12 22:40:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 22:40:20,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:20,753 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:20,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:20,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:20,965 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 22:40:20,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:20,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467531913] [2021-11-12 22:40:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:20,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:20,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:20,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:40:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:21,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:40:21,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:21,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:21,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:21,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467531913] [2021-11-12 22:40:21,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467531913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:21,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:21,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:40:21,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066401399] [2021-11-12 22:40:21,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:21,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:40:21,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:40:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:40:21,368 INFO L87 Difference]: Start difference. First operand 3044 states and 5173 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:21,450 INFO L93 Difference]: Finished difference Result 3032 states and 5153 transitions. [2021-11-12 22:40:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:40:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-12 22:40:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:21,460 INFO L225 Difference]: With dead ends: 3032 [2021-11-12 22:40:21,460 INFO L226 Difference]: Without dead ends: 3032 [2021-11-12 22:40:21,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:40:21,461 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 1882 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:21,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6320 Invalid, 43 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 37.38ms Time] [2021-11-12 22:40:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-12 22:40:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3032. [2021-11-12 22:40:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1645 states have (on average 1.9130699088145897) internal successors, (3147), 3026 states have internal predecessors, (3147), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5153 transitions. [2021-11-12 22:40:21,767 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 5153 transitions. Word has length 52 [2021-11-12 22:40:21,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:21,767 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 5153 transitions. [2021-11-12 22:40:21,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:21,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 5153 transitions. [2021-11-12 22:40:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:40:21,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:21,770 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:21,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:21,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:21,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 22:40:21,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:21,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594560829] [2021-11-12 22:40:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:21,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:21,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:21,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:21,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:40:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:22,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:40:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:22,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:22,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:23,021 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 22:40:23,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 22:40:23,039 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:40:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 22:40:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:23,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:28,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:28,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594560829] [2021-11-12 22:40:28,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594560829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:28,091 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:28,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:40:28,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333047341] [2021-11-12 22:40:28,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:28,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:28,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 22:40:28,093 INFO L87 Difference]: Start difference. First operand 3032 states and 5153 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 22:40:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:40,268 INFO L93 Difference]: Finished difference Result 5433 states and 9586 transitions. [2021-11-12 22:40:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:40:40,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 60 [2021-11-12 22:40:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:40,286 INFO L225 Difference]: With dead ends: 5433 [2021-11-12 22:40:40,287 INFO L226 Difference]: Without dead ends: 5433 [2021-11-12 22:40:40,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 22:40:40,288 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 3042 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10455.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.32ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2272 IncrementalHoareTripleChecker+Unchecked, 11972.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:40,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9689 Invalid, 6015 Unknown, 0 Unchecked, 40.32ms Time], IncrementalHoareTripleChecker [55 Valid, 3688 Invalid, 0 Unknown, 2272 Unchecked, 11972.55ms Time] [2021-11-12 22:40:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-12 22:40:40,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3010. [2021-11-12 22:40:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 1655 states have (on average 1.8930513595166163) internal successors, (3133), 3004 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5139 transitions. [2021-11-12 22:40:40,913 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5139 transitions. Word has length 60 [2021-11-12 22:40:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:40,913 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5139 transitions. [2021-11-12 22:40:40,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 22:40:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5139 transitions. [2021-11-12 22:40:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:40:40,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:40,917 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:40,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:41,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:41,131 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 22:40:41,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:41,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186595136] [2021-11-12 22:40:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:41,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:41,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:41,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:40:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:40:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:41,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:41,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 22:40:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:41,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:41,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186595136] [2021-11-12 22:40:41,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186595136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:41,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:41,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:40:41,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933239773] [2021-11-12 22:40:41,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:41,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:41,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:41,884 INFO L87 Difference]: Start difference. First operand 3010 states and 5139 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 22:40:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:46,721 INFO L93 Difference]: Finished difference Result 3008 states and 5137 transitions. [2021-11-12 22:40:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:40:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-12 22:40:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:46,735 INFO L225 Difference]: With dead ends: 3008 [2021-11-12 22:40:46,735 INFO L226 Difference]: Without dead ends: 3008 [2021-11-12 22:40:46,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:46,736 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4833 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4130.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.09ms SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4760.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:46,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 4125 Invalid, 1959 Unknown, 0 Unchecked, 16.09ms Time], IncrementalHoareTripleChecker [1022 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 4760.79ms Time] [2021-11-12 22:40:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-12 22:40:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-11-12 22:40:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1655 states have (on average 1.8918429003021149) internal successors, (3131), 3002 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 5137 transitions. [2021-11-12 22:40:47,031 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 5137 transitions. Word has length 62 [2021-11-12 22:40:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:47,032 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 5137 transitions. [2021-11-12 22:40:47,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 22:40:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 5137 transitions. [2021-11-12 22:40:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:40:47,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:47,034 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:47,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:47,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:47,247 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 22:40:47,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:47,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018990232] [2021-11-12 22:40:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:47,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:47,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:47,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:40:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:40:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:47,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:47,548 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:40:47,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 22:40:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:47,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:47,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:47,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018990232] [2021-11-12 22:40:47,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018990232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:47,707 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:47,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:40:47,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496505566] [2021-11-12 22:40:47,708 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:47,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:40:47,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:40:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:40:47,709 INFO L87 Difference]: Start difference. First operand 3008 states and 5137 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 22:40:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:50,277 INFO L93 Difference]: Finished difference Result 3007 states and 5136 transitions. [2021-11-12 22:40:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:40:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-12 22:40:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:50,286 INFO L225 Difference]: With dead ends: 3007 [2021-11-12 22:40:50,287 INFO L226 Difference]: Without dead ends: 3007 [2021-11-12 22:40:50,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:40:50,288 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2138.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2483.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:50,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10234 Invalid, 1248 Unknown, 0 Unchecked, 12.26ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2483.50ms Time] [2021-11-12 22:40:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-12 22:40:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2021-11-12 22:40:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1655 states have (on average 1.891238670694864) internal successors, (3130), 3001 states have internal predecessors, (3130), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 5136 transitions. [2021-11-12 22:40:50,587 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 5136 transitions. Word has length 65 [2021-11-12 22:40:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:50,588 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 5136 transitions. [2021-11-12 22:40:50,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 22:40:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 5136 transitions. [2021-11-12 22:40:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:40:50,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:50,589 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:50,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:50,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:50,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:50,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 22:40:50,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:50,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128469256] [2021-11-12 22:40:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:50,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:50,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:50,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:50,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:40:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:40:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:51,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:40:51,177 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 22:40:51,187 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:40:51,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 22:40:51,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 22:40:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:51,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:51,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:51,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128469256] [2021-11-12 22:40:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128469256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:51,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:51,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:40:51,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885151516] [2021-11-12 22:40:51,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:51,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:40:51,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:40:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:40:51,628 INFO L87 Difference]: Start difference. First operand 3007 states and 5136 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 22:40:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:58,536 INFO L93 Difference]: Finished difference Result 3006 states and 5135 transitions. [2021-11-12 22:40:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:40:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 65 [2021-11-12 22:40:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:58,545 INFO L225 Difference]: With dead ends: 3006 [2021-11-12 22:40:58,545 INFO L226 Difference]: Without dead ends: 3006 [2021-11-12 22:40:58,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:40:58,546 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 3 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6162.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6801.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:58,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12724 Invalid, 1627 Unknown, 0 Unchecked, 16.88ms Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 6801.43ms Time] [2021-11-12 22:40:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-12 22:40:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3006. [2021-11-12 22:40:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 1654 states have (on average 1.8917775090689237) internal successors, (3129), 3000 states have internal predecessors, (3129), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:40:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5135 transitions. [2021-11-12 22:40:58,757 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5135 transitions. Word has length 65 [2021-11-12 22:40:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:58,758 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 5135 transitions. [2021-11-12 22:40:58,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 22:40:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5135 transitions. [2021-11-12 22:40:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:40:58,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:58,759 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:58,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:58,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:58,973 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:40:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-11-12 22:40:58,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:58,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451669036] [2021-11-12 22:40:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:58,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:58,976 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:59,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:40:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:59,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:40:59,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:59,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:59,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:59,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451669036] [2021-11-12 22:40:59,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451669036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:59,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:59,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:40:59,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363019354] [2021-11-12 22:40:59,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:59,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:59,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:40:59,591 INFO L87 Difference]: Start difference. First operand 3006 states and 5135 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:40:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:59,744 INFO L93 Difference]: Finished difference Result 3016 states and 5148 transitions. [2021-11-12 22:40:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:40:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 22:40:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:59,774 INFO L225 Difference]: With dead ends: 3016 [2021-11-12 22:40:59,775 INFO L226 Difference]: Without dead ends: 3016 [2021-11-12 22:40:59,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:40:59,776 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 9 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8601 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:59,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8601 Invalid, 35 Unknown, 0 Unchecked, 13.79ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 76.44ms Time] [2021-11-12 22:40:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-11-12 22:41:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-11-12 22:41:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1662 states have (on average 1.8898916967509025) internal successors, (3141), 3009 states have internal predecessors, (3141), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:41:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5148 transitions. [2021-11-12 22:41:00,026 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5148 transitions. Word has length 73 [2021-11-12 22:41:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:00,026 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5148 transitions. [2021-11-12 22:41:00,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:41:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5148 transitions. [2021-11-12 22:41:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 22:41:00,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:00,028 INFO L514 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, 1, 1, 1, 1] [2021-11-12 22:41:00,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:00,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:00,241 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:41:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 142057039, now seen corresponding path program 1 times [2021-11-12 22:41:00,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:00,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969740660] [2021-11-12 22:41:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:00,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:00,244 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:00,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:41:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:00,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:41:00,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:00,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:00,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:00,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969740660] [2021-11-12 22:41:00,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969740660] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:00,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [42375598] [2021-11-12 22:41:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:00,917 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:41:00,919 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:41:00,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 22:41:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:01,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:41:01,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:01,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:01,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [42375598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:01,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372572877] [2021-11-12 22:41:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:01,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:01,514 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:01,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 22:41:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:01,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:41:01,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:01,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:02,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372572877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:02,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:41:02,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 22:41:02,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164032846] [2021-11-12 22:41:02,174 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:02,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:41:02,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:41:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:41:02,176 INFO L87 Difference]: Start difference. First operand 3016 states and 5148 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:02,908 INFO L93 Difference]: Finished difference Result 3030 states and 5165 transitions. [2021-11-12 22:41:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:41:02,909 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 22:41:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:02,925 INFO L225 Difference]: With dead ends: 3030 [2021-11-12 22:41:02,925 INFO L226 Difference]: Without dead ends: 3024 [2021-11-12 22:41:02,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:41:02,927 INFO L933 BasicCegarLoop]: 2870 mSDtfsCounter, 39 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.29ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:02,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17198 Invalid, 135 Unknown, 0 Unchecked, 25.29ms Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 283.28ms Time] [2021-11-12 22:41:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-11-12 22:41:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2021-11-12 22:41:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1668 states have (on average 1.8872901678657075) internal successors, (3148), 3015 states have internal predecessors, (3148), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:41:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5155 transitions. [2021-11-12 22:41:03,342 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5155 transitions. Word has length 75 [2021-11-12 22:41:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:03,343 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5155 transitions. [2021-11-12 22:41:03,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5155 transitions. [2021-11-12 22:41:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 22:41:03,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:03,349 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:03,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:03,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:03,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:03,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:03,953 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:41:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2028559503, now seen corresponding path program 2 times [2021-11-12 22:41:03,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:03,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051980401] [2021-11-12 22:41:03,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:41:03,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:03,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:03,956 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:03,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:41:04,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:41:04,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:04,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:41:04,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:04,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:05,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:05,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051980401] [2021-11-12 22:41:05,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051980401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:05,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764646494] [2021-11-12 22:41:05,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:41:05,261 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:05,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:41:05,271 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:41:05,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 22:41:06,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:41:06,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:06,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:41:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:06,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:06,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [764646494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:06,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117491450] [2021-11-12 22:41:06,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:41:06,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:06,489 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:06,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 22:41:21,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:41:21,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:21,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:41:21,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:22,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:22,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117491450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:22,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:41:22,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-12 22:41:22,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759676607] [2021-11-12 22:41:22,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:22,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 22:41:22,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 22:41:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:41:22,995 INFO L87 Difference]: Start difference. First operand 3022 states and 5155 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:25,208 INFO L93 Difference]: Finished difference Result 3048 states and 5190 transitions. [2021-11-12 22:41:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-12 22:41:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-12 22:41:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:25,224 INFO L225 Difference]: With dead ends: 3048 [2021-11-12 22:41:25,224 INFO L226 Difference]: Without dead ends: 3042 [2021-11-12 22:41:25,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-11-12 22:41:25,227 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 71 mSDsluCounter, 25815 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 689.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 28688 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.54ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 785.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:25,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 28688 Invalid, 390 Unknown, 0 Unchecked, 42.54ms Time], IncrementalHoareTripleChecker [65 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 785.51ms Time] [2021-11-12 22:41:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-11-12 22:41:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3034. [2021-11-12 22:41:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1680 states have (on average 1.8827380952380952) internal successors, (3163), 3027 states have internal predecessors, (3163), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:41:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5170 transitions. [2021-11-12 22:41:25,660 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5170 transitions. Word has length 79 [2021-11-12 22:41:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5170 transitions. [2021-11-12 22:41:25,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5170 transitions. [2021-11-12 22:41:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 22:41:25,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:25,662 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:25,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:25,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:26,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:26,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:26,291 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:41:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash 214006031, now seen corresponding path program 3 times [2021-11-12 22:41:26,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:26,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977974240] [2021-11-12 22:41:26,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:41:26,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:26,294 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:26,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:41:27,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:41:27,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:27,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:41:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:27,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:29,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:29,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977974240] [2021-11-12 22:41:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977974240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:29,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1199088731] [2021-11-12 22:41:29,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:41:29,452 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:41:29,453 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:41:29,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 22:41:31,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:41:31,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:31,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:41:31,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:31,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:32,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1199088731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:32,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656885578] [2021-11-12 22:41:32,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:41:32,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:32,290 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:32,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c16aa8-db82-4e35-b9d3-65010ddb2d4d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process