./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8 --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 26df8b77023ded01b1c63f15b6d9ebfd030e4148 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8 --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 26df8b77023ded01b1c63f15b6d9ebfd030e4148 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:45:15,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:45:15,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:45:15,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:45:15,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:45:15,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:45:15,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:45:15,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:45:15,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:45:15,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:45:15,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:45:15,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:45:15,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:45:15,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:45:15,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:45:15,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:45:15,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:45:15,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:45:15,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:45:15,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:45:15,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:45:15,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:45:15,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:45:15,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:45:15,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:45:15,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:45:15,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:45:15,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:45:15,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:45:15,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:45:15,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:45:15,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:45:15,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:45:15,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:45:15,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:45:15,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:45:15,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:45:15,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:45:15,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:45:15,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:45:15,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:45:15,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:45:15,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:45:15,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:45:15,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:45:15,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:45:15,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:45:15,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:45:15,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:45:15,290 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:45:15,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:45:15,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:45:15,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:45:15,291 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:45:15,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:45:15,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:45:15,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:45:15,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:45:15,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:45:15,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:45:15,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:45:15,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:45:15,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:45:15,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:45:15,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:45:15,294 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:45:15,295 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:45:15,295 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:45:15,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:45:15,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:45:15,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:45:15,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:45:15,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:45:15,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:45:15,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:15,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:45:15,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:45:15,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:45:15,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:45:15,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:45:15,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:45:15,298 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_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26df8b77023ded01b1c63f15b6d9ebfd030e4148 [2021-10-13 07:45:15,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:45:15,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:45:15,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:45:15,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:45:15,598 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:45:15,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2021-10-13 07:45:15,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/25f0af67e/7a3c2555cf2e484e9ab3295f38b48291/FLAGea68668f3 [2021-10-13 07:45:16,392 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:45:16,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2021-10-13 07:45:16,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/25f0af67e/7a3c2555cf2e484e9ab3295f38b48291/FLAGea68668f3 [2021-10-13 07:45:16,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/25f0af67e/7a3c2555cf2e484e9ab3295f38b48291 [2021-10-13 07:45:16,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:45:16,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:45:16,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:16,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:45:16,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:45:16,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:16" (1/1) ... [2021-10-13 07:45:16,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab16ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:16, skipping insertion in model container [2021-10-13 07:45:16,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:16" (1/1) ... [2021-10-13 07:45:16,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:45:16,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:17,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:17,260 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:45:17,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c852012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:17, skipping insertion in model container [2021-10-13 07:45:17,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:17,262 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:45:17,265 INFO L168 Benchmark]: Toolchain (without parser) took 648.30 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 64.7 MB in the beginning and 100.5 MB in the end (delta: -35.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:17,266 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:17,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.92 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 64.5 MB in the beginning and 100.5 MB in the end (delta: -36.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:17,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 641.92 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 64.5 MB in the beginning and 100.5 MB in the end (delta: -36.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:45:19,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:45:19,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:45:19,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:45:19,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:45:19,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:45:19,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:45:19,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:45:19,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:45:19,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:45:19,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:45:19,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:45:19,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:45:19,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:45:19,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:45:19,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:45:19,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:45:19,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:45:19,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:45:19,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:45:19,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:45:19,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:45:19,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:45:19,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:45:19,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:45:19,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:45:19,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:45:19,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:45:19,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:45:19,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:45:19,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:45:19,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:45:19,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:45:19,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:45:19,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:45:19,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:45:19,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:45:19,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:45:19,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:45:19,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:45:19,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:45:19,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:45:20,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:45:20,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:45:20,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:45:20,026 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:45:20,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:45:20,026 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:45:20,027 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:45:20,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:45:20,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:45:20,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:45:20,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:45:20,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:45:20,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:45:20,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:45:20,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:45:20,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:45:20,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:45:20,034 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:45:20,034 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:45:20,034 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:45:20,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:45:20,035 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:45:20,035 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:45:20,035 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:45:20,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:45:20,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:45:20,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:45:20,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:45:20,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:45:20,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:20,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:45:20,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:45:20,038 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:45:20,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:45:20,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:45:20,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:45:20,040 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_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26df8b77023ded01b1c63f15b6d9ebfd030e4148 [2021-10-13 07:45:20,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:45:20,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:45:20,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:45:20,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:45:20,476 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:45:20,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2021-10-13 07:45:20,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/977697409/37f802f90f054cfea3dfb7b02363e939/FLAG51dea8730 [2021-10-13 07:45:21,399 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:45:21,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2021-10-13 07:45:21,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/977697409/37f802f90f054cfea3dfb7b02363e939/FLAG51dea8730 [2021-10-13 07:45:21,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/data/977697409/37f802f90f054cfea3dfb7b02363e939 [2021-10-13 07:45:21,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:45:21,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:45:21,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:21,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:45:21,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:45:21,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:21" (1/1) ... [2021-10-13 07:45:21,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7625fb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21, skipping insertion in model container [2021-10-13 07:45:21,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:21" (1/1) ... [2021-10-13 07:45:21,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:45:21,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:22,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:22,243 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:45:22,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:22,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:22,344 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:45:22,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:22,475 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:45:22,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22 WrapperNode [2021-10-13 07:45:22,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:22,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:22,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:45:22,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:45:22,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:22,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:45:22,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:45:22,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:45:22,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:45:22,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:45:22,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:45:22,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:45:22,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (1/1) ... [2021-10-13 07:45:22,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:22,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:22,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:45:22,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:45:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:45:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:45:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:45:23,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:45:23,258 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-13 07:45:23,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:23 BoogieIcfgContainer [2021-10-13 07:45:23,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:45:23,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:45:23,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:45:23,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:45:23,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:21" (1/3) ... [2021-10-13 07:45:23,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc23502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:23, skipping insertion in model container [2021-10-13 07:45:23,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:22" (2/3) ... [2021-10-13 07:45:23,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc23502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:23, skipping insertion in model container [2021-10-13 07:45:23,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:23" (3/3) ... [2021-10-13 07:45:23,269 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test14.i [2021-10-13 07:45:23,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:45:23,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-13 07:45:23,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:45:23,349 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, mConcurrency=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 [2021-10-13 07:45:23,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-10-13 07:45:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 61 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) [2021-10-13 07:45:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:45:23,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:23,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:45:23,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-10-13 07:45:23,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:23,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907237173] [2021-10-13 07:45:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:23,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:23,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:23,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:45:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:23,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:45:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:23,675 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 [2021-10-13 07:45:23,761 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:45:23,762 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 16 treesize of output 21 [2021-10-13 07:45:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:23,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:23,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:23,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907237173] [2021-10-13 07:45:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907237173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:23,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:23,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:45:23,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357586640] [2021-10-13 07:45:23,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:23,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:23,961 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 61 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) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:24,313 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2021-10-13 07:45:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:24,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-13 07:45:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:24,327 INFO L225 Difference]: With dead ends: 114 [2021-10-13 07:45:24,327 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 07:45:24,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:45:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 07:45:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 59. [2021-10-13 07:45:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.90625) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-13 07:45:24,368 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 6 [2021-10-13 07:45:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:24,369 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-13 07:45:24,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-13 07:45:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:45:24,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:24,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:45:24,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:24,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:24,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:24,593 INFO L82 PathProgramCache]: Analyzing trace with hash 889508714, now seen corresponding path program 1 times [2021-10-13 07:45:24,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:24,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008656307] [2021-10-13 07:45:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:24,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:24,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:24,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:45:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:45:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:24,709 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 [2021-10-13 07:45:24,718 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 [2021-10-13 07:45:24,789 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:45:24,790 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 28 treesize of output 30 [2021-10-13 07:45:24,804 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:45:24,805 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 22 treesize of output 22 [2021-10-13 07:45:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:24,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:27,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:27,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008656307] [2021-10-13 07:45:27,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008656307] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:27,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:27,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:45:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377144739] [2021-10-13 07:45:27,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:45:27,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:45:27,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-13 07:45:27,251 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-13 07:45:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:28,042 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2021-10-13 07:45:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:45:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 6 [2021-10-13 07:45:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:28,046 INFO L225 Difference]: With dead ends: 140 [2021-10-13 07:45:28,046 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:45:28,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2238.7ms TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=1, NotChecked=0, Total=90 [2021-10-13 07:45:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:45:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 58. [2021-10-13 07:45:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.875) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-13 07:45:28,057 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 6 [2021-10-13 07:45:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:28,057 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-13 07:45:28,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-10-13 07:45:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-13 07:45:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:45:28,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:28,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:28,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:28,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:28,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1804987196, now seen corresponding path program 1 times [2021-10-13 07:45:28,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:28,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091641971] [2021-10-13 07:45:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:28,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:28,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:28,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:45:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:28,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:45:28,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:28,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:28,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:28,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091641971] [2021-10-13 07:45:28,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091641971] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:28,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:28,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:45:28,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418238972] [2021-10-13 07:45:28,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:28,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:28,494 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:28,547 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2021-10-13 07:45:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-13 07:45:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:28,551 INFO L225 Difference]: With dead ends: 113 [2021-10-13 07:45:28,551 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:45:28,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:45:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:45:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 60. [2021-10-13 07:45:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-13 07:45:28,571 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 7 [2021-10-13 07:45:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:28,571 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-13 07:45:28,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-13 07:45:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:45:28,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:28,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:28,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:45:28,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:28,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834238, now seen corresponding path program 1 times [2021-10-13 07:45:28,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:28,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469527295] [2021-10-13 07:45:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:28,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:28,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:28,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:45:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:45:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:28,903 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 [2021-10-13 07:45:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:28,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:28,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:28,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469527295] [2021-10-13 07:45:28,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469527295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:28,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:28,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:45:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461473360] [2021-10-13 07:45:28,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:28,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:28,993 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:29,242 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2021-10-13 07:45:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-13 07:45:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:29,244 INFO L225 Difference]: With dead ends: 81 [2021-10-13 07:45:29,244 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 07:45:29,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:45:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 07:45:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2021-10-13 07:45:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-13 07:45:29,249 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 7 [2021-10-13 07:45:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:29,250 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-13 07:45:29,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-13 07:45:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:45:29,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:29,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:29,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:29,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:29,468 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:29,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834239, now seen corresponding path program 1 times [2021-10-13 07:45:29,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:29,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603499747] [2021-10-13 07:45:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:29,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:29,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:29,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:45:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:29,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:45:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:29,594 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 [2021-10-13 07:45:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:29,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:29,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:29,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603499747] [2021-10-13 07:45:29,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603499747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:29,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:29,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:45:29,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779263287] [2021-10-13 07:45:29,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:29,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:29,883 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:30,621 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2021-10-13 07:45:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:45:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 7 [2021-10-13 07:45:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:30,624 INFO L225 Difference]: With dead ends: 110 [2021-10-13 07:45:30,625 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 07:45:30,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:45:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 07:45:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 68. [2021-10-13 07:45:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.813953488372093) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-10-13 07:45:30,632 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 7 [2021-10-13 07:45:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:30,632 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-10-13 07:45:30,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-10-13 07:45:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:45:30,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:30,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:30,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:30,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:30,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash 119380842, now seen corresponding path program 1 times [2021-10-13 07:45:30,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:30,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127467928] [2021-10-13 07:45:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:30,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:30,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:30,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:45:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:30,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:45:30,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:31,038 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 16 [2021-10-13 07:45:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:31,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:31,152 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-13 07:45:31,153 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 29 treesize of output 28 [2021-10-13 07:45:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:31,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:31,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127467928] [2021-10-13 07:45:31,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127467928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:31,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:31,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:45:31,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564774224] [2021-10-13 07:45:31,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:31,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:31,197 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2021-10-13 07:45:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:31,669 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-13 07:45:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:45:31,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 [2021-10-13 07:45:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:31,670 INFO L225 Difference]: With dead ends: 110 [2021-10-13 07:45:31,670 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 07:45:31,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 07:45:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 67. [2021-10-13 07:45:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 66 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2021-10-13 07:45:31,675 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 8 [2021-10-13 07:45:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:31,675 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2021-10-13 07:45:31,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2021-10-13 07:45:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2021-10-13 07:45:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:45:31,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:31,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:31,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:31,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:31,890 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash 119380843, now seen corresponding path program 1 times [2021-10-13 07:45:31,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:31,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468477968] [2021-10-13 07:45:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:31,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:31,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:31,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:45:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:31,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 07:45:31,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:32,032 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 [2021-10-13 07:45:32,043 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 [2021-10-13 07:45:32,145 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:45:32,146 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 27 treesize of output 29 [2021-10-13 07:45:32,163 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:45:32,163 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 21 treesize of output 21 [2021-10-13 07:45:32,317 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 34 treesize of output 26 [2021-10-13 07:45:32,323 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 23 treesize of output 15 [2021-10-13 07:45:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:32,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:35,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:35,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468477968] [2021-10-13 07:45:35,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468477968] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:35,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:35,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 07:45:35,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003363298] [2021-10-13 07:45:35,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:45:35,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:45:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2021-10-13 07:45:35,051 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) [2021-10-13 07:45:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:36,809 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-10-13 07:45:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:45:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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 8 [2021-10-13 07:45:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:36,812 INFO L225 Difference]: With dead ends: 116 [2021-10-13 07:45:36,812 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 07:45:36,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2825.3ms TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2021-10-13 07:45:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 07:45:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 66. [2021-10-13 07:45:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-10-13 07:45:36,818 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 8 [2021-10-13 07:45:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:36,819 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-10-13 07:45:36,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) [2021-10-13 07:45:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-10-13 07:45:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:36,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:36,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:36,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:37,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:37,022 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:37,023 INFO L82 PathProgramCache]: Analyzing trace with hash -594161204, now seen corresponding path program 1 times [2021-10-13 07:45:37,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:37,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825528929] [2021-10-13 07:45:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:37,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:37,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:37,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:45:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:37,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:45:37,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:37,191 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 [2021-10-13 07:45:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:37,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:37,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:37,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825528929] [2021-10-13 07:45:37,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825528929] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:37,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:37,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:45:37,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958008030] [2021-10-13 07:45:37,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:37,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:37,354 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:37,845 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2021-10-13 07:45:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:45:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:45:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:37,847 INFO L225 Difference]: With dead ends: 125 [2021-10-13 07:45:37,847 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 07:45:37,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:45:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 07:45:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 65. [2021-10-13 07:45:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 64 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-10-13 07:45:37,852 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 9 [2021-10-13 07:45:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:37,852 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-10-13 07:45:37,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-10-13 07:45:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:37,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:37,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:37,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:38,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:38,058 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -594161203, now seen corresponding path program 1 times [2021-10-13 07:45:38,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:38,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838744111] [2021-10-13 07:45:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:38,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:38,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:38,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:45:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:45:38,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:38,225 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 [2021-10-13 07:45:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:38,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:38,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:38,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838744111] [2021-10-13 07:45:38,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838744111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:38,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:38,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 07:45:38,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687448700] [2021-10-13 07:45:38,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:45:38,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:45:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:45:38,719 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2021-10-13 07:45:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:40,311 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2021-10-13 07:45:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:45:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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 9 [2021-10-13 07:45:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:40,314 INFO L225 Difference]: With dead ends: 137 [2021-10-13 07:45:40,314 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 07:45:40,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 484.4ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:45:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 07:45:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 65. [2021-10-13 07:45:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-13 07:45:40,320 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 9 [2021-10-13 07:45:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:40,321 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-13 07:45:40,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2021-10-13 07:45:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-13 07:45:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:40,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:40,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:40,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:40,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:40,530 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1200915423, now seen corresponding path program 1 times [2021-10-13 07:45:40,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:40,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484659918] [2021-10-13 07:45:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:40,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:40,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:45:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:40,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:45:40,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:40,665 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 [2021-10-13 07:45:40,757 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 23 treesize of output 15 [2021-10-13 07:45:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:40,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:40,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:40,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484659918] [2021-10-13 07:45:40,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484659918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:40,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:40,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 07:45:40,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751565317] [2021-10-13 07:45:40,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:45:40,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:45:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:45:40,882 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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) [2021-10-13 07:45:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:41,406 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-10-13 07:45:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:45:41,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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 9 [2021-10-13 07:45:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:41,408 INFO L225 Difference]: With dead ends: 104 [2021-10-13 07:45:41,408 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 07:45:41,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:45:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 07:45:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2021-10-13 07:45:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 78 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-10-13 07:45:41,413 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 9 [2021-10-13 07:45:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:41,413 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-10-13 07:45:41,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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) [2021-10-13 07:45:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-10-13 07:45:41,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:41,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:41,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:41,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:41,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:41,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1200915424, now seen corresponding path program 1 times [2021-10-13 07:45:41,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:41,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682160882] [2021-10-13 07:45:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:41,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:41,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:41,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:41,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:45:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:45:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:41,803 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 [2021-10-13 07:45:41,958 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 34 treesize of output 26 [2021-10-13 07:45:41,963 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 20 treesize of output 12 [2021-10-13 07:45:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:42,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:42,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:42,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682160882] [2021-10-13 07:45:42,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682160882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:42,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:42,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 07:45:42,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886794093] [2021-10-13 07:45:42,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:45:42,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:45:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:42,439 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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) [2021-10-13 07:45:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:43,713 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2021-10-13 07:45:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:45:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 9 [2021-10-13 07:45:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:43,715 INFO L225 Difference]: With dead ends: 114 [2021-10-13 07:45:43,715 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 07:45:43,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 464.1ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:45:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 07:45:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2021-10-13 07:45:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.696969696969697) internal successors, (112), 87 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2021-10-13 07:45:43,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 9 [2021-10-13 07:45:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:43,721 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2021-10-13 07:45:43,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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) [2021-10-13 07:45:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2021-10-13 07:45:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:43,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:43,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:43,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:43,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:43,926 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1180846158, now seen corresponding path program 1 times [2021-10-13 07:45:43,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696792088] [2021-10-13 07:45:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:43,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:43,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:43,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:45:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:44,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:45:44,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:44,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:44,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:44,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696792088] [2021-10-13 07:45:44,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696792088] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:44,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:44,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:45:44,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571542789] [2021-10-13 07:45:44,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:44,154 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:44,195 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2021-10-13 07:45:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:45:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:44,197 INFO L225 Difference]: With dead ends: 88 [2021-10-13 07:45:44,197 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 07:45:44,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:45:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 07:45:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-10-13 07:45:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.7017543859649122) internal successors, (97), 75 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-10-13 07:45:44,201 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 9 [2021-10-13 07:45:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:44,201 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-10-13 07:45:44,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-10-13 07:45:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:45:44,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:44,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:44,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:44,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:44,415 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:44,416 INFO L82 PathProgramCache]: Analyzing trace with hash 241733103, now seen corresponding path program 1 times [2021-10-13 07:45:44,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:44,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730643453] [2021-10-13 07:45:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:44,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:44,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:44,418 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:44,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:45:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:44,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:45:44,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:44,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:44,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:44,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730643453] [2021-10-13 07:45:44,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730643453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:44,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:44,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:45:44,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482249650] [2021-10-13 07:45:44,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:44,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:44,668 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-13 07:45:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:44,868 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2021-10-13 07:45:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2021-10-13 07:45:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:44,870 INFO L225 Difference]: With dead ends: 86 [2021-10-13 07:45:44,870 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 07:45:44,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:45:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 07:45:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2021-10-13 07:45:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 74 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2021-10-13 07:45:44,873 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 11 [2021-10-13 07:45:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:44,873 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2021-10-13 07:45:44,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2021-10-13 07:45:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2021-10-13 07:45:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:45:44,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:44,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:44,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:45,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:45,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash 241733104, now seen corresponding path program 1 times [2021-10-13 07:45:45,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:45,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564118493] [2021-10-13 07:45:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:45,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:45,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:45:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:45,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:45:45,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:45,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:45,552 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 [2021-10-13 07:45:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:45,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:45,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564118493] [2021-10-13 07:45:45,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564118493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:45,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:45,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 07:45:45,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606774080] [2021-10-13 07:45:45,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:45:45,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:45:45,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:45,645 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:45,980 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2021-10-13 07:45:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:45:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 [2021-10-13 07:45:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:45,982 INFO L225 Difference]: With dead ends: 86 [2021-10-13 07:45:45,982 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 07:45:45,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 239.4ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:45:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 07:45:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-10-13 07:45:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 73 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-10-13 07:45:45,986 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 11 [2021-10-13 07:45:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:45,986 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-10-13 07:45:45,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2021-10-13 07:45:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:45:45,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:45,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:46,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:46,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:46,198 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash -606195921, now seen corresponding path program 1 times [2021-10-13 07:45:46,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:46,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258574902] [2021-10-13 07:45:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:46,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:46,200 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:46,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:45:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:46,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:45:46,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:46,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:46,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 10 [2021-10-13 07:45:46,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:45:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:46,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:46,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:46,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258574902] [2021-10-13 07:45:46,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258574902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:46,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:46,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:45:46,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802887094] [2021-10-13 07:45:46,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:45:46,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:45:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:46,831 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:47,284 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2021-10-13 07:45:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:45:47,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:45:47,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:47,288 INFO L225 Difference]: With dead ends: 70 [2021-10-13 07:45:47,288 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 07:45:47,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 291.1ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:45:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 07:45:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-10-13 07:45:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.58) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-10-13 07:45:47,291 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 12 [2021-10-13 07:45:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:47,292 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-10-13 07:45:47,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-10-13 07:45:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:45:47,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:47,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:47,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:47,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:47,514 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:47,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1612205273, now seen corresponding path program 1 times [2021-10-13 07:45:47,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:47,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598565941] [2021-10-13 07:45:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:47,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:47,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:47,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:47,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:45:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:45:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:47,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:47,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:47,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598565941] [2021-10-13 07:45:47,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598565941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:47,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:47,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:45:47,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5600792] [2021-10-13 07:45:47,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:45:47,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:45:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:47,992 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:48,277 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-10-13 07:45:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:45:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:48,279 INFO L225 Difference]: With dead ends: 69 [2021-10-13 07:45:48,279 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 07:45:48,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 07:45:48,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-13 07:45:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-13 07:45:48,282 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-13 07:45:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:48,282 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-13 07:45:48,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-13 07:45:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:45:48,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:48,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:48,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:48,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:48,484 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1189283757, now seen corresponding path program 1 times [2021-10-13 07:45:48,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:48,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980353122] [2021-10-13 07:45:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:48,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:48,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:48,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:45:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:48,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:45:48,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:48,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:49,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:45:49,268 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 22 treesize of output 26 [2021-10-13 07:45:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:49,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:49,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980353122] [2021-10-13 07:45:49,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980353122] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:49,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:49,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 07:45:49,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419372830] [2021-10-13 07:45:49,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:45:49,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:45:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:45:49,594 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:49,969 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-10-13 07:45:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:45:49,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 [2021-10-13 07:45:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:49,971 INFO L225 Difference]: With dead ends: 58 [2021-10-13 07:45:49,971 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 07:45:49,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 413.9ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:45:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 07:45:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 07:45:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-13 07:45:49,974 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 14 [2021-10-13 07:45:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:49,975 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-13 07:45:49,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-13 07:45:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:45:49,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:49,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:49,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:50,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:50,182 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash -440390413, now seen corresponding path program 1 times [2021-10-13 07:45:50,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:50,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438308186] [2021-10-13 07:45:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:50,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:50,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:50,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:45:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:50,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 07:45:50,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:50,487 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 [2021-10-13 07:45:50,759 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 25 treesize of output 21 [2021-10-13 07:45:50,832 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 27 treesize of output 19 [2021-10-13 07:45:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:50,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:50,998 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 48 treesize of output 44 [2021-10-13 07:45:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:51,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:51,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438308186] [2021-10-13 07:45:51,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438308186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:51,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:51,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 14 [2021-10-13 07:45:51,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409146489] [2021-10-13 07:45:51,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:45:51,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:45:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:45:51,564 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:52,781 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2021-10-13 07:45:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:45:52,782 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:45:52,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:52,782 INFO L225 Difference]: With dead ends: 68 [2021-10-13 07:45:52,783 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 07:45:52,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1187.0ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:45:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 07:45:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2021-10-13 07:45:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.619047619047619) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-10-13 07:45:52,786 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 16 [2021-10-13 07:45:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:52,787 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-10-13 07:45:52,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-10-13 07:45:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:45:52,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:52,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:52,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:52,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:52,990 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash -440390412, now seen corresponding path program 1 times [2021-10-13 07:45:52,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:52,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754679744] [2021-10-13 07:45:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:52,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:52,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:52,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:52,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:45:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 07:45:53,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:53,299 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 [2021-10-13 07:45:53,598 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 17 treesize of output 13 [2021-10-13 07:45:53,604 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 11 treesize of output 7 [2021-10-13 07:45:53,689 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 31 treesize of output 23 [2021-10-13 07:45:53,695 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 20 treesize of output 12 [2021-10-13 07:45:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:53,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:54,264 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 60 treesize of output 56 [2021-10-13 07:45:54,268 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 90 treesize of output 82 [2021-10-13 07:45:54,618 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 36 treesize of output 28 [2021-10-13 07:45:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:55,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:55,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754679744] [2021-10-13 07:45:55,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754679744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:55,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:55,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-13 07:45:55,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282990582] [2021-10-13 07:45:55,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 07:45:55,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 07:45:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-13 07:45:55,744 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:57,822 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-10-13 07:45:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:45:57,823 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:45:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:57,824 INFO L225 Difference]: With dead ends: 69 [2021-10-13 07:45:57,824 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 07:45:57,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2398.9ms TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-10-13 07:45:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 07:45:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2021-10-13 07:45:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-10-13 07:45:57,828 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 16 [2021-10-13 07:45:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:57,829 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-10-13 07:45:57,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-10-13 07:45:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:45:57,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:57,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:57,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:58,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:45:58,045 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:45:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1454308763, now seen corresponding path program 1 times [2021-10-13 07:45:58,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:45:58,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600419769] [2021-10-13 07:45:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:58,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:45:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:45:58,047 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:45:58,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:45:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:58,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 07:45:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:58,429 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 [2021-10-13 07:45:58,682 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 25 treesize of output 21 [2021-10-13 07:45:58,750 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 27 treesize of output 19 [2021-10-13 07:45:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:58,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:58,975 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 52 treesize of output 48 [2021-10-13 07:45:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:59,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:45:59,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600419769] [2021-10-13 07:45:59,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600419769] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:59,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:59,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-10-13 07:45:59,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886722205] [2021-10-13 07:45:59,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:45:59,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:45:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:45:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:45:59,490 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:00,838 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-10-13 07:46:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:46:00,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:46:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:00,839 INFO L225 Difference]: With dead ends: 63 [2021-10-13 07:46:00,839 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 07:46:00,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1214.7ms TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2021-10-13 07:46:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 07:46:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2021-10-13 07:46:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.5) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-13 07:46:00,842 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2021-10-13 07:46:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:00,843 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-13 07:46:00,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-13 07:46:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:46:00,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:00,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:00,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 07:46:01,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:01,059 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:46:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:01,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1454308764, now seen corresponding path program 1 times [2021-10-13 07:46:01,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:01,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441680684] [2021-10-13 07:46:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:01,060 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:01,061 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:46:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:01,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 07:46:01,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:01,426 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 [2021-10-13 07:46:01,700 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 17 treesize of output 13 [2021-10-13 07:46:01,711 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 11 treesize of output 7 [2021-10-13 07:46:01,803 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 31 treesize of output 23 [2021-10-13 07:46:01,809 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 20 treesize of output 12 [2021-10-13 07:46:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:01,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:02,741 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 60 treesize of output 56 [2021-10-13 07:46:02,744 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 90 treesize of output 82 [2021-10-13 07:46:03,081 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 40 treesize of output 32 [2021-10-13 07:46:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:04,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:04,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441680684] [2021-10-13 07:46:04,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441680684] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:04,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:04,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-10-13 07:46:04,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327900259] [2021-10-13 07:46:04,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 07:46:04,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 07:46:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:46:04,043 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:06,779 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-10-13 07:46:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 07:46:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:46:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:06,781 INFO L225 Difference]: With dead ends: 72 [2021-10-13 07:46:06,781 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 07:46:06,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3128.4ms TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 07:46:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 07:46:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-10-13 07:46:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-10-13 07:46:06,783 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 19 [2021-10-13 07:46:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:06,784 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-10-13 07:46:06,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-10-13 07:46:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:46:06,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:06,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:06,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:06,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:06,990 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:46:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2133897787, now seen corresponding path program 1 times [2021-10-13 07:46:06,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:06,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453407125] [2021-10-13 07:46:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:06,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:06,993 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:06,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:46:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:07,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 07:46:07,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:07,358 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 [2021-10-13 07:46:07,412 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:46:07,413 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 19 treesize of output 19 [2021-10-13 07:46:07,620 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 16 treesize of output 12 [2021-10-13 07:46:07,686 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 16 treesize of output 8 [2021-10-13 07:46:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:07,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:07,804 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 30 treesize of output 26 [2021-10-13 07:46:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:08,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:08,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453407125] [2021-10-13 07:46:08,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453407125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:46:08,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:08,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 12 [2021-10-13 07:46:08,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523366310] [2021-10-13 07:46:08,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:46:08,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:46:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:46:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:46:08,048 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:09,174 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-10-13 07:46:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:46:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 07:46:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:09,177 INFO L225 Difference]: With dead ends: 61 [2021-10-13 07:46:09,178 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 07:46:09,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 919.4ms TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2021-10-13 07:46:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 07:46:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-10-13 07:46:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-10-13 07:46:09,180 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 20 [2021-10-13 07:46:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:09,181 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-10-13 07:46:09,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-10-13 07:46:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:46:09,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:09,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:46:09,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-13 07:46:09,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:46:09,386 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 24 more)] === [2021-10-13 07:46:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1977268703, now seen corresponding path program 1 times [2021-10-13 07:46:09,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:46:09,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892403792] [2021-10-13 07:46:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:09,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:46:09,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:46:09,388 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:46:09,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:46:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:09,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 07:46:09,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:09,837 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 [2021-10-13 07:46:09,896 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:46:09,897 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 17 treesize of output 17 [2021-10-13 07:46:10,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:46:10,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:46:10,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:46:10,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:46:10,612 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 07:46:10,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 46 [2021-10-13 07:46:10,618 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 69 treesize of output 57 [2021-10-13 07:46:10,892 INFO L354 Elim1Store]: treesize reduction 21, result has 12.5 percent of original size [2021-10-13 07:46:10,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 111 treesize of output 90 [2021-10-13 07:46:11,458 INFO L354 Elim1Store]: treesize reduction 82, result has 7.9 percent of original size [2021-10-13 07:46:11,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 40 [2021-10-13 07:46:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:11,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:11,986 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 110 treesize of output 106 [2021-10-13 07:46:16,161 INFO L354 Elim1Store]: treesize reduction 132, result has 62.2 percent of original size [2021-10-13 07:46:16,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 129721 treesize of output 125269 [2021-10-13 07:46:24,463 WARN L207 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 835 DAG size of output: 805 [2021-10-13 07:46:24,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:46:24,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892403792] [2021-10-13 07:46:24,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:46:24,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079235851] [2021-10-13 07:46:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:24,941 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:46:24,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:46:24,955 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:46:24,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 07:46:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:25,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-13 07:46:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:25,571 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 9 treesize of output 3 [2021-10-13 07:46:25,601 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 [2021-10-13 07:46:25,763 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:46:25,764 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 15 treesize of output 20 [2021-10-13 07:46:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:46:26,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-10-13 07:46:27,107 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 11 treesize of output 7 [2021-10-13 07:46:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:46:27,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:46:27,568 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:46:27,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 61 [2021-10-13 07:46:27,574 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 88 treesize of output 76 [2021-10-13 07:46:28,228 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 129 treesize of output 105 [2021-10-13 07:46:29,055 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-10-13 07:46:29,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 54 [2021-10-13 07:46:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:29,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:29,743 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 108 treesize of output 104 [2021-10-13 07:46:31,280 INFO L354 Elim1Store]: treesize reduction 132, result has 62.2 percent of original size [2021-10-13 07:46:31,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 129863 treesize of output 125411 [2021-10-13 07:46:38,579 WARN L207 SmtUtils]: Spent 7.30 s on a formula simplification. DAG size of input: 842 DAG size of output: 812 [2021-10-13 07:46:39,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:46:39,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528613165] [2021-10-13 07:46:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:39,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:46:39,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:39,042 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:46:39,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 07:46:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:46:39,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 07:46:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:39,528 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 [2021-10-13 07:46:39,685 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:46:39,686 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 17 treesize of output 17 [2021-10-13 07:46:40,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:46:40,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 07:46:40,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:46:40,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:46:40,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 07:46:40,925 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:46:40,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-13 07:46:40,941 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 11 treesize of output 7 [2021-10-13 07:46:41,309 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 61 treesize of output 53 [2021-10-13 07:46:42,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:46:42,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 26 [2021-10-13 07:46:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:42,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:46:42,305 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 110 treesize of output 106 [2021-10-13 07:46:43,850 INFO L354 Elim1Store]: treesize reduction 132, result has 62.2 percent of original size [2021-10-13 07:46:43,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 129721 treesize of output 125269 [2021-10-13 07:46:50,801 WARN L207 SmtUtils]: Spent 6.95 s on a formula simplification. DAG size of input: 835 DAG size of output: 805 [2021-10-13 07:46:51,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:46:51,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:46:51,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:46:51,220 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:46:51,220 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:46:51,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 07:46:51,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:46:51,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:46:51,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:46:51,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:46:51,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:46:51,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 07:46:51,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 07:46:51,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 07:46:51,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 07:46:51,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 07:46:51,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 07:46:51,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:46:51,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:46:51,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:46:51,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 07:46:51,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-13 07:46:51,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:46:51,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:51,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-13 07:46:51,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-13 07:46:51,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:46:51,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:46:51,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:46:51 BoogieIcfgContainer [2021-10-13 07:46:51,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:46:51,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:46:51,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:46:51,858 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:46:51,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:23" (3/4) ... [2021-10-13 07:46:51,865 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:46:51,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:46:51,866 INFO L168 Benchmark]: Toolchain (without parser) took 90234.40 ms. Allocated memory was 50.3 MB in the beginning and 434.1 MB in the end (delta: 383.8 MB). Free memory was 25.0 MB in the beginning and 253.1 MB in the end (delta: -228.1 MB). Peak memory consumption was 156.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,867 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:51,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.54 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 24.8 MB in the beginning and 34.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.89 ms. Allocated memory is still 67.1 MB. Free memory was 34.2 MB in the beginning and 48.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,869 INFO L168 Benchmark]: Boogie Preprocessor took 40.30 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,869 INFO L168 Benchmark]: RCFGBuilder took 657.39 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 30.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,869 INFO L168 Benchmark]: TraceAbstraction took 88594.61 ms. Allocated memory was 67.1 MB in the beginning and 434.1 MB in the end (delta: 367.0 MB). Free memory was 29.6 MB in the beginning and 253.5 MB in the end (delta: -223.9 MB). Peak memory consumption was 255.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:51,870 INFO L168 Benchmark]: Witness Printer took 7.95 ms. Allocated memory is still 434.1 MB. Free memory was 253.5 MB in the beginning and 253.1 MB in the end (delta: 414.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:51,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 840.54 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 24.8 MB in the beginning and 34.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.89 ms. Allocated memory is still 67.1 MB. Free memory was 34.2 MB in the beginning and 48.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.30 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 657.39 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 30.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 88594.61 ms. Allocated memory was 67.1 MB in the beginning and 434.1 MB in the end (delta: 367.0 MB). Free memory was 29.6 MB in the beginning and 253.5 MB in the end (delta: -223.9 MB). Peak memory consumption was 255.7 MB. Max. memory is 16.1 GB. * Witness Printer took 7.95 ms. Allocated memory is still 434.1 MB. Free memory was 253.5 MB in the beginning and 253.1 MB in the end (delta: 414.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L776] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND TRUE \read(*p) [L559] head->next [L547] next->prev = new [L548] new->next = next [L549] new->prev = prev [L550] prev->next = new [L768] struct A14 *p; [L769] struct A14 *n; [L770] EXPR (plist)->next [L770] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); [L770] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) [L770] EXPR (p)->list.next [L770] const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); [L770] n = ({ const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); (typeof(*(p)) *)( (char *)__mptr - ((size_t) &((typeof(*(p)) *)0)->list) );}) [L770] COND TRUE &p->list != (plist) [L567] entry->prev [L567] entry->next [L554] next->prev = prev - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 28 error locations. Started 1 CEGAR loops. OverallTime: 88500.3ms, OverallIterations: 23, TraceHistogramMax: 1, EmptinessCheckTime: 26.9ms, AutomataDifference: 18614.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 941 SDtfs, 4262 SDslu, 2574 SDs, 0 SdLazy, 3272 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10805.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 261 SyntacticMatches, 20 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 16545.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=11, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 120.2ms AutomataMinimizationTime, 22 MinimizatonAttempts, 621 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 191.7ms SsaConstructionTime, 1031.7ms SatisfiabilityAnalysisTime, 18620.9ms InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 446 ConstructedInterpolants, 20 QuantifiedInterpolants, 5341 SizeOfPredicates, 308 NumberOfNonLiveVariables, 1751 ConjunctsInSsa, 338 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:46:51,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6099c82-3652-4d0d-ab4a-366594ecb99f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...