./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8 --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 a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:46,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:46,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:46,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:46,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:46,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:46,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:46,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:46,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:46,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:46,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:46,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:46,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:46,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:46,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:46,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:46,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:46,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:46,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:46,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:46,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:46,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:46,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:46,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:46,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:46,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:46,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:46,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:46,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:46,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:46,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:46,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:46,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:46,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:46,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:46,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:46,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:46,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:46,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:46,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:46,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:46,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:36:46,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:46,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:46,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:46,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:46,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:46,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:46,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:46,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:46,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:46,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:46,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:46,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:46,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:46,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:46,420 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:46,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:36:46,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:36:46,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:46,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:46,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:36:46,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:46,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:46,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:46,423 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:36:46,423 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:36:46,424 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:36:46,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:46,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:46,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:46,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:46,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:46,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:46,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:46,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:46,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:46,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:46,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:46,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:46,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:46,429 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_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-07 01:36:46,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:46,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:46,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:46,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:46,831 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:46,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-07 01:36:46,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/2f2060691/925ca331acf24402bc0386b8c80b992e/FLAGbb70fd033 [2021-11-07 01:36:47,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:47,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-07 01:36:47,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/2f2060691/925ca331acf24402bc0386b8c80b992e/FLAGbb70fd033 [2021-11-07 01:36:47,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/2f2060691/925ca331acf24402bc0386b8c80b992e [2021-11-07 01:36:47,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:47,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:47,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:47,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:47,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:47,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:47" (1/1) ... [2021-11-07 01:36:47,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e710572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:47, skipping insertion in model container [2021-11-07 01:36:47,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:47" (1/1) ... [2021-11-07 01:36:47,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:47,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:48,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-07 01:36:48,564 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-07 01:36:48,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:48,585 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:36:48,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72f049db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:48, skipping insertion in model container [2021-11-07 01:36:48,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:48,602 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:48,605 INFO L168 Benchmark]: Toolchain (without parser) took 809.20 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 49.0 MB in the beginning and 90.9 MB in the end (delta: -41.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,606 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:48,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.60 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 90.9 MB in the end (delta: -42.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,614 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 88.1 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 806.60 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 90.9 MB in the end (delta: -42.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8 --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 a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:51,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:51,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:51,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:51,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:51,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:51,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:51,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:51,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:51,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:51,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:51,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:51,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:51,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:51,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:51,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:51,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:51,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:51,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:51,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:51,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:51,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:51,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:51,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:51,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:51,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:51,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:51,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:51,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:51,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:51,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:51,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:51,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:51,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:51,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:51,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:51,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:51,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:51,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:51,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:51,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:51,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:36:51,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:51,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:51,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:51,321 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:51,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:51,322 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:51,322 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:51,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:51,322 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:51,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:36:51,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:36:51,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:51,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:51,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:36:51,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:51,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:51,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:51,327 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:36:51,327 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:36:51,328 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:36:51,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:51,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:51,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:51,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:51,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:51,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:51,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:51,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:51,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:51,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:51,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:51,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:51,331 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:51,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:51,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:51,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:51,332 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_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-07 01:36:51,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:51,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:51,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:51,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:51,810 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:51,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-07 01:36:51,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/bcedd51fd/ad6dc7fb34f44e3384502d0ddecd24a6/FLAGe2f250d5c [2021-11-07 01:36:52,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:52,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-07 01:36:52,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/bcedd51fd/ad6dc7fb34f44e3384502d0ddecd24a6/FLAGe2f250d5c [2021-11-07 01:36:52,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/data/bcedd51fd/ad6dc7fb34f44e3384502d0ddecd24a6 [2021-11-07 01:36:52,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:52,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:52,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:52,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:52,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:52,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:52" (1/1) ... [2021-11-07 01:36:52,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5a9f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:52, skipping insertion in model container [2021-11-07 01:36:52,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:52" (1/1) ... [2021-11-07 01:36:52,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:52,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:53,392 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-07 01:36:53,553 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-07 01:36:53,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:53,592 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:53,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:53,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-07 01:36:53,720 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-07 01:36:53,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:53,750 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:53,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-07 01:36:53,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-07 01:36:53,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:53,934 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:53,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53 WrapperNode [2021-11-07 01:36:53,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:53,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:53,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:53,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:53,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:54,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:54,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:54,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:54,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:54,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:54,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:54,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:54,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:54,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:54,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:54,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:54,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:36:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:36:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:36:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:36:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:36:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:36:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:36:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:36:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:00,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:00,187 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 01:37:00,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:00 BoogieIcfgContainer [2021-11-07 01:37:00,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:00,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:00,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:00,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:00,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:52" (1/3) ... [2021-11-07 01:37:00,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460f3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:00, skipping insertion in model container [2021-11-07 01:37:00,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53" (2/3) ... [2021-11-07 01:37:00,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460f3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:00, skipping insertion in model container [2021-11-07 01:37:00,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:00" (3/3) ... [2021-11-07 01:37:00,200 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2021-11-07 01:37:00,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:00,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 538 error locations. [2021-11-07 01:37:00,253 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:00,259 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:37:00,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 538 error locations. [2021-11-07 01:37:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 541 states have (on average 2.243992606284658) internal successors, (1214), 1079 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:37:00,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:00,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:37:00,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 01:37:00,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:00,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531066862] [2021-11-07 01:37:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:00,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:00,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:00,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:00,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:00,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:00,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:00,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:00,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:00,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531066862] [2021-11-07 01:37:00,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531066862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:00,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:00,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:00,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381718566] [2021-11-07 01:37:00,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:00,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:00,686 INFO L87 Difference]: Start difference. First operand has 1080 states, 541 states have (on average 2.243992606284658) internal successors, (1214), 1079 states have internal predecessors, (1214), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:02,728 INFO L93 Difference]: Finished difference Result 1075 states and 1136 transitions. [2021-11-07 01:37:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:37:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:02,754 INFO L225 Difference]: With dead ends: 1075 [2021-11-07 01:37:02,754 INFO L226 Difference]: Without dead ends: 1073 [2021-11-07 01:37:02,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-07 01:37:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1065. [2021-11-07 01:37:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 541 states have (on average 2.0831792975970425) internal successors, (1127), 1064 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1127 transitions. [2021-11-07 01:37:02,858 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1127 transitions. Word has length 3 [2021-11-07 01:37:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:02,859 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1127 transitions. [2021-11-07 01:37:02,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1127 transitions. [2021-11-07 01:37:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:37:02,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:02,860 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:37:02,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:03,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:03,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 01:37:03,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:03,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684764525] [2021-11-07 01:37:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:03,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:03,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:03,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:03,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:03,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:03,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:03,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684764525] [2021-11-07 01:37:03,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684764525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:03,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:03,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:37:03,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847235679] [2021-11-07 01:37:03,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:03,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:03,316 INFO L87 Difference]: Start difference. First operand 1065 states and 1127 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:08,700 INFO L93 Difference]: Finished difference Result 1560 states and 1660 transitions. [2021-11-07 01:37:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:08,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 01:37:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:08,744 INFO L225 Difference]: With dead ends: 1560 [2021-11-07 01:37:08,745 INFO L226 Difference]: Without dead ends: 1560 [2021-11-07 01:37:08,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-07 01:37:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1100. [2021-11-07 01:37:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 585 states have (on average 2.0615384615384613) internal successors, (1206), 1099 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1206 transitions. [2021-11-07 01:37:08,791 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1206 transitions. Word has length 3 [2021-11-07 01:37:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:08,792 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1206 transitions. [2021-11-07 01:37:08,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1206 transitions. [2021-11-07 01:37:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:37:08,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:08,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:08,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:09,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:09,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-07 01:37:09,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:09,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375252390] [2021-11-07 01:37:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:09,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:09,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:09,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:09,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:37:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:09,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:09,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:09,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:09,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:09,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:09,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375252390] [2021-11-07 01:37:09,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375252390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:09,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:09,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:09,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114332439] [2021-11-07 01:37:09,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:09,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:09,268 INFO L87 Difference]: Start difference. First operand 1100 states and 1206 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:11,482 INFO L93 Difference]: Finished difference Result 1428 states and 1559 transitions. [2021-11-07 01:37:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:37:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:11,491 INFO L225 Difference]: With dead ends: 1428 [2021-11-07 01:37:11,491 INFO L226 Difference]: Without dead ends: 1428 [2021-11-07 01:37:11,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-07 01:37:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1051. [2021-11-07 01:37:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 585 states have (on average 1.9726495726495727) internal successors, (1154), 1050 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1154 transitions. [2021-11-07 01:37:11,525 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1154 transitions. Word has length 8 [2021-11-07 01:37:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:11,526 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1154 transitions. [2021-11-07 01:37:11,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1154 transitions. [2021-11-07 01:37:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:37:11,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:11,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:11,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:11,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-07 01:37:11,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:11,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006994869] [2021-11-07 01:37:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:11,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:11,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:11,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:37:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:11,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:11,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:11,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:11,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:12,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006994869] [2021-11-07 01:37:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006994869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:12,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:12,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:37:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920597094] [2021-11-07 01:37:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:12,061 INFO L87 Difference]: Start difference. First operand 1051 states and 1154 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:16,688 INFO L93 Difference]: Finished difference Result 1471 states and 1566 transitions. [2021-11-07 01:37:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:16,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:37:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:16,697 INFO L225 Difference]: With dead ends: 1471 [2021-11-07 01:37:16,697 INFO L226 Difference]: Without dead ends: 1471 [2021-11-07 01:37:16,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-11-07 01:37:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1041. [2021-11-07 01:37:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 585 states have (on average 1.9504273504273504) internal successors, (1141), 1040 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1141 transitions. [2021-11-07 01:37:16,727 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1141 transitions. Word has length 8 [2021-11-07 01:37:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:16,727 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1141 transitions. [2021-11-07 01:37:16,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1141 transitions. [2021-11-07 01:37:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:37:16,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:16,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:16,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:16,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:16,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -945574260, now seen corresponding path program 1 times [2021-11-07 01:37:16,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:16,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894455354] [2021-11-07 01:37:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:16,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:16,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:37:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:17,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:17,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:17,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:17,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:17,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894455354] [2021-11-07 01:37:17,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894455354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:17,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:17,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:17,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179391815] [2021-11-07 01:37:17,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:17,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:17,348 INFO L87 Difference]: Start difference. First operand 1041 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 2.75) 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) [2021-11-07 01:37:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:18,239 INFO L93 Difference]: Finished difference Result 1487 states and 1619 transitions. [2021-11-07 01:37:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:18,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) 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 [2021-11-07 01:37:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:18,249 INFO L225 Difference]: With dead ends: 1487 [2021-11-07 01:37:18,249 INFO L226 Difference]: Without dead ends: 1487 [2021-11-07 01:37:18,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-07 01:37:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1277. [2021-11-07 01:37:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 821 states have (on average 1.9378806333739342) internal successors, (1591), 1276 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1591 transitions. [2021-11-07 01:37:18,278 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1591 transitions. Word has length 11 [2021-11-07 01:37:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:18,279 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1591 transitions. [2021-11-07 01:37:18,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) 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) [2021-11-07 01:37:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1591 transitions. [2021-11-07 01:37:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:37:18,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:18,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:18,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:18,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:18,502 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr537ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:18,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 751971392, now seen corresponding path program 1 times [2021-11-07 01:37:18,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:18,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348632510] [2021-11-07 01:37:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:18,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:18,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:18,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:37:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:18,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:18,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:18,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:18,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:18,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:18,787 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:37:18,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:37:18,856 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:37:18,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:37:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:18,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:18,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:18,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348632510] [2021-11-07 01:37:18,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348632510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:18,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:18,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:18,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006557524] [2021-11-07 01:37:18,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:18,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:18,969 INFO L87 Difference]: Start difference. First operand 1277 states and 1591 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:20,418 INFO L93 Difference]: Finished difference Result 1661 states and 2040 transitions. [2021-11-07 01:37:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 12 [2021-11-07 01:37:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:20,427 INFO L225 Difference]: With dead ends: 1661 [2021-11-07 01:37:20,427 INFO L226 Difference]: Without dead ends: 1661 [2021-11-07 01:37:20,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-11-07 01:37:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1276. [2021-11-07 01:37:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 820 states have (on average 1.9378048780487804) internal successors, (1589), 1275 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1589 transitions. [2021-11-07 01:37:20,458 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1589 transitions. Word has length 12 [2021-11-07 01:37:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:20,459 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1589 transitions. [2021-11-07 01:37:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1589 transitions. [2021-11-07 01:37:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:37:20,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:20,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:20,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:20,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-07 01:37:20,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:20,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231305248] [2021-11-07 01:37:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:20,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:20,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:20,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:37:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:20,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:20,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:20,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:20,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231305248] [2021-11-07 01:37:20,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231305248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:20,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:20,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:20,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584910082] [2021-11-07 01:37:20,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:20,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:20,966 INFO L87 Difference]: Start difference. First operand 1276 states and 1589 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:20,996 INFO L93 Difference]: Finished difference Result 1216 states and 1503 transitions. [2021-11-07 01:37:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:20,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-07 01:37:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:21,002 INFO L225 Difference]: With dead ends: 1216 [2021-11-07 01:37:21,002 INFO L226 Difference]: Without dead ends: 1216 [2021-11-07 01:37:21,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-07 01:37:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2021-11-07 01:37:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 784 states have (on average 1.9170918367346939) internal successors, (1503), 1215 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1503 transitions. [2021-11-07 01:37:21,029 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1503 transitions. Word has length 18 [2021-11-07 01:37:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:21,029 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1503 transitions. [2021-11-07 01:37:21,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1503 transitions. [2021-11-07 01:37:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:37:21,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:21,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:21,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:37:21,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:21,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-07 01:37:21,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:21,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024531671] [2021-11-07 01:37:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:21,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:21,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:21,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:21,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:21,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:21,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024531671] [2021-11-07 01:37:21,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024531671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:21,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:21,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:21,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571485741] [2021-11-07 01:37:21,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:21,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:21,533 INFO L87 Difference]: Start difference. First operand 1216 states and 1503 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:21,624 INFO L93 Difference]: Finished difference Result 1188 states and 1447 transitions. [2021-11-07 01:37:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:37:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:21,631 INFO L225 Difference]: With dead ends: 1188 [2021-11-07 01:37:21,631 INFO L226 Difference]: Without dead ends: 1188 [2021-11-07 01:37:21,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-11-07 01:37:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1186. [2021-11-07 01:37:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 768 states have (on average 1.8815104166666667) internal successors, (1445), 1185 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1445 transitions. [2021-11-07 01:37:21,657 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1445 transitions. Word has length 20 [2021-11-07 01:37:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:21,658 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1445 transitions. [2021-11-07 01:37:21,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1445 transitions. [2021-11-07 01:37:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:37:21,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:21,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:21,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:21,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:21,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-07 01:37:21,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:21,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972498754] [2021-11-07 01:37:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:21,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:21,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:21,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:21,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:37:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:22,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:22,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:22,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:22,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:22,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:22,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972498754] [2021-11-07 01:37:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972498754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:22,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:22,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:22,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756665699] [2021-11-07 01:37:22,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:22,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:22,437 INFO L87 Difference]: Start difference. First operand 1186 states and 1445 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:24,974 INFO L93 Difference]: Finished difference Result 1678 states and 2063 transitions. [2021-11-07 01:37:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:37:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:24,982 INFO L225 Difference]: With dead ends: 1678 [2021-11-07 01:37:24,982 INFO L226 Difference]: Without dead ends: 1678 [2021-11-07 01:37:24,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2021-11-07 01:37:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1182. [2021-11-07 01:37:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 768 states have (on average 1.87109375) internal successors, (1437), 1181 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1437 transitions. [2021-11-07 01:37:25,012 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1437 transitions. Word has length 34 [2021-11-07 01:37:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1437 transitions. [2021-11-07 01:37:25,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1437 transitions. [2021-11-07 01:37:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:37:25,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:25,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:25,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:37:25,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:25,225 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-07 01:37:25,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:25,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881022081] [2021-11-07 01:37:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:25,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:25,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:37:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:25,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:25,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:25,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:25,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:26,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:26,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881022081] [2021-11-07 01:37:26,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881022081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:26,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:26,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:37:26,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940508715] [2021-11-07 01:37:26,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:26,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:26,329 INFO L87 Difference]: Start difference. First operand 1182 states and 1437 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:32,837 INFO L93 Difference]: Finished difference Result 1809 states and 2216 transitions. [2021-11-07 01:37:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:37:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:37:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:32,847 INFO L225 Difference]: With dead ends: 1809 [2021-11-07 01:37:32,847 INFO L226 Difference]: Without dead ends: 1809 [2021-11-07 01:37:32,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:32,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-11-07 01:37:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1178. [2021-11-07 01:37:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 768 states have (on average 1.8606770833333333) internal successors, (1429), 1177 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1429 transitions. [2021-11-07 01:37:32,873 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1429 transitions. Word has length 34 [2021-11-07 01:37:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1429 transitions. [2021-11-07 01:37:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1429 transitions. [2021-11-07 01:37:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:37:32,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:32,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:32,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:33,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:33,089 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-07 01:37:33,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:33,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071886921] [2021-11-07 01:37:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:33,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:33,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:33,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:37:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:33,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:33,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:33,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:33,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:33,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071886921] [2021-11-07 01:37:33,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071886921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:33,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:33,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:37:33,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517513193] [2021-11-07 01:37:33,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:33,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:33,698 INFO L87 Difference]: Start difference. First operand 1178 states and 1429 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:33,773 INFO L93 Difference]: Finished difference Result 1166 states and 1409 transitions. [2021-11-07 01:37:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:37:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:33,780 INFO L225 Difference]: With dead ends: 1166 [2021-11-07 01:37:33,780 INFO L226 Difference]: Without dead ends: 1166 [2021-11-07 01:37:33,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-07 01:37:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2021-11-07 01:37:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 756 states have (on average 1.8637566137566137) internal successors, (1409), 1165 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1409 transitions. [2021-11-07 01:37:33,805 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1409 transitions. Word has length 52 [2021-11-07 01:37:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:33,806 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1409 transitions. [2021-11-07 01:37:33,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1409 transitions. [2021-11-07 01:37:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:37:33,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:33,811 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:33,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:34,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:34,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:37:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-07 01:37:34,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:34,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559928057] [2021-11-07 01:37:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:34,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:34,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:34,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:34,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:37:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:34,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:37:34,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:34,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:34,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:35,369 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:37:35,369 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 [2021-11-07 01:37:35,393 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:37:35,393 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 26 treesize of output 22 [2021-11-07 01:37:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:35,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:42,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:42,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559928057] [2021-11-07 01:37:42,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559928057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:42,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:42,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:37:42,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667145975] [2021-11-07 01:37:42,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:42,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-07 01:37:42,857 INFO L87 Difference]: Start difference. First operand 1166 states and 1409 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:59,979 INFO L93 Difference]: Finished difference Result 2115 states and 2666 transitions. [2021-11-07 01:37:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:37:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:37:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:59,989 INFO L225 Difference]: With dead ends: 2115 [2021-11-07 01:37:59,989 INFO L226 Difference]: Without dead ends: 2115 [2021-11-07 01:37:59,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-07 01:37:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2021-11-07 01:38:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1128. [2021-11-07 01:38:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 756 states have (on average 1.8134920634920635) internal successors, (1371), 1127 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1371 transitions. [2021-11-07 01:38:00,012 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1371 transitions. Word has length 60 [2021-11-07 01:38:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:00,012 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1371 transitions. [2021-11-07 01:38:00,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1371 transitions. [2021-11-07 01:38:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:38:00,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:00,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:00,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:00,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:00,228 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:38:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-07 01:38:00,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:00,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288654185] [2021-11-07 01:38:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:00,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:00,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:00,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:38:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:00,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:00,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:00,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:00,825 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 24 treesize of output 20 [2021-11-07 01:38:00,879 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 26 treesize of output 14 [2021-11-07 01:38:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:00,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:01,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:01,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288654185] [2021-11-07 01:38:01,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288654185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:01,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:01,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:38:01,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935848817] [2021-11-07 01:38:01,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:01,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:01,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:01,136 INFO L87 Difference]: Start difference. First operand 1128 states and 1371 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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) [2021-11-07 01:38:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:06,768 INFO L93 Difference]: Finished difference Result 1817 states and 2195 transitions. [2021-11-07 01:38:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:38:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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) Word has length 66 [2021-11-07 01:38:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:06,776 INFO L225 Difference]: With dead ends: 1817 [2021-11-07 01:38:06,776 INFO L226 Difference]: Without dead ends: 1817 [2021-11-07 01:38:06,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:38:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2021-11-07 01:38:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1127. [2021-11-07 01:38:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 756 states have (on average 1.812169312169312) internal successors, (1370), 1126 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1370 transitions. [2021-11-07 01:38:06,794 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1370 transitions. Word has length 66 [2021-11-07 01:38:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:06,795 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1370 transitions. [2021-11-07 01:38:06,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 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) [2021-11-07 01:38:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1370 transitions. [2021-11-07 01:38:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:38:06,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:06,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:06,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:38:07,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:07,010 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:38:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-07 01:38:07,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:07,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997374341] [2021-11-07 01:38:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:07,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:07,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:07,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:07,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:38:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:07,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:38:07,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:07,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:38:07,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 01:38:07,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:38:07,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-07 01:38:07,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 01:38:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:07,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:08,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:08,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997374341] [2021-11-07 01:38:08,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997374341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:08,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:08,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:38:08,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745555832] [2021-11-07 01:38:08,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:38:08,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:38:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:38:08,404 INFO L87 Difference]: Start difference. First operand 1127 states and 1370 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 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) [2021-11-07 01:38:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:24,017 INFO L93 Difference]: Finished difference Result 1745 states and 2145 transitions. [2021-11-07 01:38:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:38:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 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) Word has length 67 [2021-11-07 01:38:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:24,025 INFO L225 Difference]: With dead ends: 1745 [2021-11-07 01:38:24,025 INFO L226 Difference]: Without dead ends: 1745 [2021-11-07 01:38:24,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:38:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-11-07 01:38:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1126. [2021-11-07 01:38:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 756 states have (on average 1.810846560846561) internal successors, (1369), 1125 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1369 transitions. [2021-11-07 01:38:24,046 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1369 transitions. Word has length 67 [2021-11-07 01:38:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:24,046 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1369 transitions. [2021-11-07 01:38:24,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 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) [2021-11-07 01:38:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1369 transitions. [2021-11-07 01:38:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:38:24,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:24,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:24,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:24,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:24,253 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:38:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-07 01:38:24,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:24,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749552217] [2021-11-07 01:38:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:24,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:24,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:24,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:38:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:24,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:38:24,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:24,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:25,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749552217] [2021-11-07 01:38:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749552217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:25,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:25,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:38:25,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007538759] [2021-11-07 01:38:25,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:38:25,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:38:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:38:25,076 INFO L87 Difference]: Start difference. First operand 1126 states and 1369 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:25,217 INFO L93 Difference]: Finished difference Result 2102 states and 2548 transitions. [2021-11-07 01:38:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:38:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:38:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:25,226 INFO L225 Difference]: With dead ends: 2102 [2021-11-07 01:38:25,226 INFO L226 Difference]: Without dead ends: 2102 [2021-11-07 01:38:25,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:38:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-07 01:38:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1129. [2021-11-07 01:38:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 759 states have (on average 1.8076416337285903) internal successors, (1372), 1128 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1372 transitions. [2021-11-07 01:38:25,250 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1372 transitions. Word has length 71 [2021-11-07 01:38:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:25,251 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1372 transitions. [2021-11-07 01:38:25,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1372 transitions. [2021-11-07 01:38:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:38:25,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:25,252 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:25,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:38:25,453 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:38:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-07 01:38:25,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:25,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489512964] [2021-11-07 01:38:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:25,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:25,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:25,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:25,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:38:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:25,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:25,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:26,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:26,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489512964] [2021-11-07 01:38:26,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489512964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055582233] [2021-11-07 01:38:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:26,440 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:38:26,441 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:38:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:38:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:27,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:38:27,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:27,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:27,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1055582233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:27,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139014458] [2021-11-07 01:38:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:38:27,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:27,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:27,588 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:38:27,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:38:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:38:28,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:38:28,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:28,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139014458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:28,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:38:28,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:38:28,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964879878] [2021-11-07 01:38:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:38:28,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:38:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:38:28,786 INFO L87 Difference]: Start difference. First operand 1129 states and 1372 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:38:29,827 INFO L93 Difference]: Finished difference Result 3091 states and 3740 transitions. [2021-11-07 01:38:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:38:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 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 73 [2021-11-07 01:38:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:38:29,845 INFO L225 Difference]: With dead ends: 3091 [2021-11-07 01:38:29,845 INFO L226 Difference]: Without dead ends: 3091 [2021-11-07 01:38:29,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:38:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2021-11-07 01:38:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 1138. [2021-11-07 01:38:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 768 states have (on average 1.80078125) internal successors, (1383), 1137 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1383 transitions. [2021-11-07 01:38:29,879 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1383 transitions. Word has length 73 [2021-11-07 01:38:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:38:29,880 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1383 transitions. [2021-11-07 01:38:29,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:38:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1383 transitions. [2021-11-07 01:38:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:38:29,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:38:29,881 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:38:29,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:38:30,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:38:30,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-07 01:38:30,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:30,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:38:30,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:38:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-07 01:38:30,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:38:30,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131357392] [2021-11-07 01:38:30,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:30,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:38:30,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:38:30,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:38:30,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:38:31,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:38:31,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:31,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:38:31,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:31,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:32,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:32,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131357392] [2021-11-07 01:38:32,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131357392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:32,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558923166] [2021-11-07 01:38:32,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:32,347 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:38:32,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:38:32,362 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:38:32,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:38:33,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:38:33,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:33,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:38:33,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:34,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:38:34,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [558923166] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:34,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918441692] [2021-11-07 01:38:34,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:38:34,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:34,182 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:38:34,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:39:02,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:39:02,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:02,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:39:02,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:02,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:03,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918441692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:03,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:39:03,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 25 [2021-11-07 01:39:03,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500512327] [2021-11-07 01:39:03,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 01:39:03,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 01:39:03,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:39:03,782 INFO L87 Difference]: Start difference. First operand 1138 states and 1383 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 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) [2021-11-07 01:39:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:09,617 INFO L93 Difference]: Finished difference Result 5825 states and 7074 transitions. [2021-11-07 01:39:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:39:09,618 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 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) Word has length 77 [2021-11-07 01:39:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:09,636 INFO L225 Difference]: With dead ends: 5825 [2021-11-07 01:39:09,636 INFO L226 Difference]: Without dead ends: 5825 [2021-11-07 01:39:09,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=769, Invalid=1883, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:39:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2021-11-07 01:39:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 1154. [2021-11-07 01:39:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 784 states have (on average 1.788265306122449) internal successors, (1402), 1153 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1402 transitions. [2021-11-07 01:39:09,709 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1402 transitions. Word has length 77 [2021-11-07 01:39:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:09,709 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 1402 transitions. [2021-11-07 01:39:09,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 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) [2021-11-07 01:39:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1402 transitions. [2021-11-07 01:39:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:39:09,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:09,711 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:09,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:09,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:10,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:39:10,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:10,326 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-07 01:39:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 688279334, now seen corresponding path program 3 times [2021-11-07 01:39:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:10,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283757582] [2021-11-07 01:39:10,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:10,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:10,328 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:10,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:39:11,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:39:11,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:11,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:39:11,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:12,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:14,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:14,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283757582] [2021-11-07 01:39:14,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283757582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:14,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930774461] [2021-11-07 01:39:14,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:14,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:14,031 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:14,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:39:17,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:39:17,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:17,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:39:17,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:17,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:17,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1930774461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:17,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551663904] [2021-11-07 01:39:17,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:39:17,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:39:17,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:17,851 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:39:17,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d16d2a-1193-4825-bb33-36f294c26d19/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process