./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:04:57,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:04:57,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:04:57,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:04:57,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:04:57,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:04:57,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:04:57,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:04:57,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:04:57,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:04:57,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:04:57,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:04:57,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:04:57,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:04:57,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:04:57,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:04:57,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:04:57,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:04:57,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:04:57,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:04:57,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:04:57,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:04:57,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:04:57,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:04:57,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:04:57,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:04:57,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:04:57,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:04:57,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:04:57,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:04:57,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:04:57,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:04:57,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:04:57,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:04:57,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:04:57,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:04:57,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:04:57,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:04:57,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:04:57,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:04:57,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:04:57,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:04:57,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:04:57,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:04:57,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:04:57,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:04:57,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:04:57,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:04:57,380 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:04:57,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:04:57,380 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:04:57,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:04:57,380 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:04:57,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:04:57,381 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:04:57,381 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:04:57,381 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:04:57,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:04:57,382 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:04:57,382 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:04:57,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:04:57,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:04:57,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:04:57,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:04:57,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:04:57,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:04:57,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:04:57,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:04:57,384 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:04:57,384 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:04:57,384 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:04:57,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:04:57,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:04:57,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:04:57,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:04:57,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:04:57,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:04:57,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:04:57,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:04:57,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:04:57,387 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:04:57,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:04:57,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:04:57,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:04:57,388 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2021-11-23 03:04:57,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:04:57,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:04:57,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:04:57,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:04:57,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:04:57,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-23 03:04:57,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/95847a806/c08e37cbd5514f15a370263d02fed26c/FLAG97bf72a9a [2021-11-23 03:04:58,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:04:58,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-23 03:04:58,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/95847a806/c08e37cbd5514f15a370263d02fed26c/FLAG97bf72a9a [2021-11-23 03:04:58,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/95847a806/c08e37cbd5514f15a370263d02fed26c [2021-11-23 03:04:58,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:04:58,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:04:58,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:04:58,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:04:58,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:04:58,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:58" (1/1) ... [2021-11-23 03:04:58,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eace8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:58, skipping insertion in model container [2021-11-23 03:04:58,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:58" (1/1) ... [2021-11-23 03:04:58,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:04:58,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:04:59,327 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-23 03:04:59,626 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-23 03:04:59,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:04:59,652 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) [2021-11-23 03:04:59,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66464286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:59, skipping insertion in model container [2021-11-23 03:04:59,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:04:59,654 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 03:04:59,656 INFO L158 Benchmark]: Toolchain (without parser) took 1013.45ms. Allocated memory is still 100.7MB. Free memory was 59.2MB in the beginning and 54.3MB in the end (delta: 4.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-23 03:04:59,656 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:04:59,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1008.58ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 54.3MB in the end (delta: 4.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-23 03:04:59,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1008.58ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 54.3MB in the end (delta: 4.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:05:01,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:05:01,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:05:01,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:05:01,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:05:01,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:05:01,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:05:01,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:05:01,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:05:01,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:05:01,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:05:01,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:05:01,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:05:01,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:05:01,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:05:01,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:05:01,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:05:01,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:05:01,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:05:01,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:05:01,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:05:01,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:05:01,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:05:01,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:05:01,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:05:01,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:05:01,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:05:01,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:05:01,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:05:01,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:05:01,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:05:01,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:05:01,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:05:01,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:05:01,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:05:01,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:05:01,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:05:01,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:05:01,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:05:01,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:05:01,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:05:01,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:05:01,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:05:01,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:05:01,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:05:01,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:05:01,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:05:01,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:05:01,985 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:05:01,985 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:05:01,986 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:05:01,986 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:05:01,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:05:01,987 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:05:01,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:05:01,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:05:01,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:05:01,989 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:05:01,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:05:01,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:05:01,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:05:01,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:05:01,991 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:05:01,991 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:05:01,991 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:05:01,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:05:01,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:05:01,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:05:01,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:05:01,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:05:01,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:05:01,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:05:01,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:05:01,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:05:01,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:05:01,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:05:01,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:05:01,995 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:05:01,995 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:05:01,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:05:01,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:05:01,996 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2021-11-23 03:05:02,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:05:02,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:05:02,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:05:02,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:05:02,390 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:05:02,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-23 03:05:02,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/3d6b2125e/dd453cea996e4373b5ce04aae63de14b/FLAGa66d3d4bf [2021-11-23 03:05:03,117 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:05:03,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-23 03:05:03,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/3d6b2125e/dd453cea996e4373b5ce04aae63de14b/FLAGa66d3d4bf [2021-11-23 03:05:03,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/data/3d6b2125e/dd453cea996e4373b5ce04aae63de14b [2021-11-23 03:05:03,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:05:03,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:05:03,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:05:03,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:05:03,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:05:03,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:03" (1/1) ... [2021-11-23 03:05:03,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af0a7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:03, skipping insertion in model container [2021-11-23 03:05:03,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:03" (1/1) ... [2021-11-23 03:05:03,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:05:03,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:05:03,921 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-23 03:05:04,180 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-23 03:05:04,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:04,242 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:05:04,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:05:04,283 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-23 03:05:04,417 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-23 03:05:04,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:04,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:05:04,496 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-23 03:05:04,610 WARN L230 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_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-23 03:05:04,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:04,681 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:05:04,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04 WrapperNode [2021-11-23 03:05:04,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:05:04,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:04,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:05:04,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:05:04,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,874 INFO L137 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3034 [2021-11-23 03:05:04,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:04,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:05:04,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:05:04,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:05:04,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:04,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:05,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:05,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:05,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:05:05,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:05:05,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:05:05,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:05:05,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (1/1) ... [2021-11-23 03:05:05,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:05:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:05:05,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:05:05,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:05:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 03:05:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:05:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:05:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:05:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:05:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:05:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:05:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:05:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:05:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:05:05,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:05:05,439 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:05:05,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:05:05,460 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:05:11,773 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:05:11,797 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:05:11,797 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 03:05:11,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:11 BoogieIcfgContainer [2021-11-23 03:05:11,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:05:11,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:05:11,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:05:11,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:05:11,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:03" (1/3) ... [2021-11-23 03:05:11,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2127d2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:11, skipping insertion in model container [2021-11-23 03:05:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:04" (2/3) ... [2021-11-23 03:05:11,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2127d2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:11, skipping insertion in model container [2021-11-23 03:05:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:11" (3/3) ... [2021-11-23 03:05:11,813 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2021-11-23 03:05:11,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:05:11,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-23 03:05:11,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:05:11,884 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 [2021-11-23 03:05:11,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-23 03:05:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-23 03:05:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:05:11,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:11,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:05:11,955 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-23 03:05:11,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771757318] [2021-11-23 03:05:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:11,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:11,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:12,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:05:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:12,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:05:12,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:12,177 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 [2021-11-23 03:05:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:12,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:12,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:12,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771757318] [2021-11-23 03:05:12,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771757318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:12,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:12,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:05:12,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798576500] [2021-11-23 03:05:12,208 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:12,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:05:12,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:05:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:12,246 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:15,610 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-11-23 03:05:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:15,613 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 [2021-11-23 03:05:15,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:15,657 INFO L225 Difference]: With dead ends: 2235 [2021-11-23 03:05:15,657 INFO L226 Difference]: Without dead ends: 2233 [2021-11-23 03:05:15,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:15,663 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:15,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 03:05:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-23 03:05:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-11-23 03:05:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-23 03:05:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-11-23 03:05:16,216 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-11-23 03:05:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:16,217 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-11-23 03:05:16,217 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) [2021-11-23 03:05:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-11-23 03:05:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:05:16,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:16,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:05:16,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:16,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:16,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-23 03:05:16,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:16,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374933274] [2021-11-23 03:05:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:16,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:16,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:16,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:16,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:05:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:16,563 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 [2021-11-23 03:05:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:16,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:16,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:16,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374933274] [2021-11-23 03:05:16,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374933274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:16,629 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:16,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:05:16,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611893443] [2021-11-23 03:05:16,630 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:16,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:05:16,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:05:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:16,633 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:26,619 INFO L93 Difference]: Finished difference Result 3538 states and 5631 transitions. [2021-11-23 03:05:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:05:26,620 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 [2021-11-23 03:05:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:26,646 INFO L225 Difference]: With dead ends: 3538 [2021-11-23 03:05:26,646 INFO L226 Difference]: Without dead ends: 3538 [2021-11-23 03:05:26,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:26,648 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 4607 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:26,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 4902 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 03:05:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-23 03:05:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2090. [2021-11-23 03:05:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1076 states have (on average 2.0315985130111525) internal successors, (2186), 2084 states have internal predecessors, (2186), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-23 03:05:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3192 transitions. [2021-11-23 03:05:27,001 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3192 transitions. Word has length 3 [2021-11-23 03:05:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:27,001 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3192 transitions. [2021-11-23 03:05:27,001 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) [2021-11-23 03:05:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3192 transitions. [2021-11-23 03:05:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:05:27,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:27,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:27,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 03:05:27,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:27,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-23 03:05:27,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:27,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558592357] [2021-11-23 03:05:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:27,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:27,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:27,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:05:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:27,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:05:27,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:27,376 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 [2021-11-23 03:05:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:27,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:27,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:27,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558592357] [2021-11-23 03:05:27,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558592357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:27,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:27,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:05:27,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567643820] [2021-11-23 03:05:27,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:27,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:05:27,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:05:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:27,429 INFO L87 Difference]: Start difference. First operand 2090 states and 3192 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:30,264 INFO L93 Difference]: Finished difference Result 3257 states and 5376 transitions. [2021-11-23 03:05:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:30,266 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 [2021-11-23 03:05:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:30,290 INFO L225 Difference]: With dead ends: 3257 [2021-11-23 03:05:30,291 INFO L226 Difference]: Without dead ends: 3257 [2021-11-23 03:05:30,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:30,294 INFO L933 BasicCegarLoop]: 4868 mSDtfsCounter, 1806 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:30,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7126 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:05:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-23 03:05:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2043. [2021-11-23 03:05:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1076 states have (on average 1.9851301115241635) internal successors, (2136), 2037 states have internal predecessors, (2136), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-23 03:05:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3142 transitions. [2021-11-23 03:05:30,748 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3142 transitions. Word has length 8 [2021-11-23 03:05:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:30,748 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3142 transitions. [2021-11-23 03:05:30,748 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) [2021-11-23 03:05:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3142 transitions. [2021-11-23 03:05:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:05:30,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:30,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:30,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:30,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:30,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:30,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-23 03:05:30,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:30,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584570118] [2021-11-23 03:05:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:30,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:30,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:30,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:30,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:05:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:31,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:31,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:31,115 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 [2021-11-23 03:05:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:31,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:31,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:31,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584570118] [2021-11-23 03:05:31,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584570118] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:31,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:05:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106888035] [2021-11-23 03:05:31,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:31,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:05:31,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:05:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:31,240 INFO L87 Difference]: Start difference. First operand 2043 states and 3142 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:38,407 INFO L93 Difference]: Finished difference Result 3287 states and 5370 transitions. [2021-11-23 03:05:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:05:38,408 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 [2021-11-23 03:05:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:38,432 INFO L225 Difference]: With dead ends: 3287 [2021-11-23 03:05:38,432 INFO L226 Difference]: Without dead ends: 3287 [2021-11-23 03:05:38,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:38,434 INFO L933 BasicCegarLoop]: 5028 mSDtfsCounter, 3022 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:38,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 7450 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:05:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-11-23 03:05:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2033. [2021-11-23 03:05:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1076 states have (on average 1.9730483271375465) internal successors, (2123), 2027 states have internal predecessors, (2123), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-23 03:05:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3129 transitions. [2021-11-23 03:05:38,782 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3129 transitions. Word has length 8 [2021-11-23 03:05:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:38,782 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3129 transitions. [2021-11-23 03:05:38,783 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) [2021-11-23 03:05:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3129 transitions. [2021-11-23 03:05:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:05:38,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:38,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:38,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:38,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:38,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:38,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-11-23 03:05:38,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:38,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596053381] [2021-11-23 03:05:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:38,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:38,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:39,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:39,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:05:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:39,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:39,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:39,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:39,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:39,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596053381] [2021-11-23 03:05:39,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596053381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:39,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:39,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:05:39,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317046574] [2021-11-23 03:05:39,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:39,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:05:39,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:05:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:39,307 INFO L87 Difference]: Start difference. First operand 2033 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:39,684 INFO L93 Difference]: Finished difference Result 3496 states and 5626 transitions. [2021-11-23 03:05:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:39,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 03:05:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:39,709 INFO L225 Difference]: With dead ends: 3496 [2021-11-23 03:05:39,710 INFO L226 Difference]: Without dead ends: 3496 [2021-11-23 03:05:39,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:39,711 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 1560 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:39,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6497 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:05:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-23 03:05:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3203. [2021-11-23 03:05:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 1746 states have (on average 1.9558991981672393) internal successors, (3415), 3197 states have internal predecessors, (3415), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5421 transitions. [2021-11-23 03:05:40,217 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5421 transitions. Word has length 11 [2021-11-23 03:05:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:40,217 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5421 transitions. [2021-11-23 03:05:40,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5421 transitions. [2021-11-23 03:05:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:05:40,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:40,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:40,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:40,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:40,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:40,430 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-23 03:05:40,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:40,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931573097] [2021-11-23 03:05:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:40,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:40,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:40,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:05:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:40,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:05:40,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:40,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:40,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:40,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931573097] [2021-11-23 03:05:40,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931573097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:40,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:05:40,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790588638] [2021-11-23 03:05:40,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:40,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:05:40,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:05:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:40,586 INFO L87 Difference]: Start difference. First operand 3203 states and 5421 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:41,415 INFO L93 Difference]: Finished difference Result 3357 states and 5561 transitions. [2021-11-23 03:05:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 03:05:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:41,439 INFO L225 Difference]: With dead ends: 3357 [2021-11-23 03:05:41,439 INFO L226 Difference]: Without dead ends: 3357 [2021-11-23 03:05:41,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:41,441 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2788 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:41,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 4523 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:05:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-11-23 03:05:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3143. [2021-11-23 03:05:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 1710 states have (on average 1.946783625730994) internal successors, (3329), 3137 states have internal predecessors, (3329), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5335 transitions. [2021-11-23 03:05:41,787 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5335 transitions. Word has length 13 [2021-11-23 03:05:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:41,788 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5335 transitions. [2021-11-23 03:05:41,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5335 transitions. [2021-11-23 03:05:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:05:41,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:41,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:41,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:42,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:42,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-11-23 03:05:42,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:42,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443938565] [2021-11-23 03:05:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:42,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:42,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:42,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:42,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:05:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:42,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:42,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:42,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:05:42,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:05:42,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:05:42,215 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 03:05:42,215 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 [2021-11-23 03:05:42,280 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 03:05:42,281 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 [2021-11-23 03:05:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:42,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:42,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:42,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443938565] [2021-11-23 03:05:42,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443938565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:42,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:42,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:05:42,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322744679] [2021-11-23 03:05:42,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:42,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:05:42,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:05:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:05:42,375 INFO L87 Difference]: Start difference. First operand 3143 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:47,024 INFO L93 Difference]: Finished difference Result 5460 states and 9683 transitions. [2021-11-23 03:05:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:05:47,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:05:47,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:47,059 INFO L225 Difference]: With dead ends: 5460 [2021-11-23 03:05:47,059 INFO L226 Difference]: Without dead ends: 5460 [2021-11-23 03:05:47,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:05:47,060 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2664 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:47,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 9274 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 03:05:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-11-23 03:05:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3142. [2021-11-23 03:05:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 1709 states have (on average 1.9467524868344062) internal successors, (3327), 3136 states have internal predecessors, (3327), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5333 transitions. [2021-11-23 03:05:47,699 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 5333 transitions. Word has length 14 [2021-11-23 03:05:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:47,699 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 5333 transitions. [2021-11-23 03:05:47,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 5333 transitions. [2021-11-23 03:05:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:05:47,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:47,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:47,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:47,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:47,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-23 03:05:47,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:47,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479545299] [2021-11-23 03:05:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:47,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:47,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:47,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:05:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:05:48,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:48,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:48,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:48,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479545299] [2021-11-23 03:05:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479545299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:48,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:05:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853598508] [2021-11-23 03:05:48,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:48,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:05:48,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:05:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:48,142 INFO L87 Difference]: Start difference. First operand 3142 states and 5333 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:48,208 INFO L93 Difference]: Finished difference Result 3082 states and 5247 transitions. [2021-11-23 03:05:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:48,209 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 [2021-11-23 03:05:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:48,232 INFO L225 Difference]: With dead ends: 3082 [2021-11-23 03:05:48,232 INFO L226 Difference]: Without dead ends: 3082 [2021-11-23 03:05:48,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:48,233 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1935 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:48,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 4010 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:05:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-23 03:05:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3082. [2021-11-23 03:05:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 1673 states have (on average 1.9372384937238494) internal successors, (3241), 3076 states have internal predecessors, (3241), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5247 transitions. [2021-11-23 03:05:48,678 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5247 transitions. Word has length 18 [2021-11-23 03:05:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:48,679 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5247 transitions. [2021-11-23 03:05:48,679 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) [2021-11-23 03:05:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5247 transitions. [2021-11-23 03:05:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:05:48,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:48,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:48,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:48,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:48,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-23 03:05:48,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:48,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851851021] [2021-11-23 03:05:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:48,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:48,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:48,896 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:48,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:05:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:49,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:49,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:49,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:49,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851851021] [2021-11-23 03:05:49,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851851021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:49,134 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:49,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:05:49,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835213827] [2021-11-23 03:05:49,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:49,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:05:49,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:05:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:05:49,136 INFO L87 Difference]: Start difference. First operand 3082 states and 5247 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:50,033 INFO L93 Difference]: Finished difference Result 3054 states and 5191 transitions. [2021-11-23 03:05:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:05:50,037 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 [2021-11-23 03:05:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:50,047 INFO L225 Difference]: With dead ends: 3054 [2021-11-23 03:05:50,047 INFO L226 Difference]: Without dead ends: 3054 [2021-11-23 03:05:50,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:05:50,048 INFO L933 BasicCegarLoop]: 2911 mSDtfsCounter, 3802 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:50,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 6342 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:05:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-23 03:05:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3052. [2021-11-23 03:05:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1657 states have (on average 1.9209414604707302) internal successors, (3183), 3046 states have internal predecessors, (3183), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5189 transitions. [2021-11-23 03:05:50,413 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5189 transitions. Word has length 20 [2021-11-23 03:05:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:50,413 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5189 transitions. [2021-11-23 03:05:50,414 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) [2021-11-23 03:05:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5189 transitions. [2021-11-23 03:05:50,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:05:50,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:50,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:50,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:50,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:50,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-23 03:05:50,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965635651] [2021-11-23 03:05:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:50,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:50,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:50,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:05:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:50,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:05:50,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:50,816 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 [2021-11-23 03:05:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:50,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:51,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965635651] [2021-11-23 03:05:51,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965635651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:51,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:51,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:05:51,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330878118] [2021-11-23 03:05:51,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:05:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:05:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:05:51,024 INFO L87 Difference]: Start difference. First operand 3052 states and 5189 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:05:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:55,563 INFO L93 Difference]: Finished difference Result 5485 states and 9686 transitions. [2021-11-23 03:05:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:05:55,565 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 [2021-11-23 03:05:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:55,585 INFO L225 Difference]: With dead ends: 5485 [2021-11-23 03:05:55,585 INFO L226 Difference]: Without dead ends: 5485 [2021-11-23 03:05:55,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:05:55,586 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 3447 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:55,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 6507 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 03:05:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-11-23 03:05:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3048. [2021-11-23 03:05:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1657 states have (on average 1.916113458056729) internal successors, (3175), 3042 states have internal predecessors, (3175), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:05:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5181 transitions. [2021-11-23 03:05:56,159 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5181 transitions. Word has length 34 [2021-11-23 03:05:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:56,159 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 5181 transitions. [2021-11-23 03:05:56,159 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) [2021-11-23 03:05:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5181 transitions. [2021-11-23 03:05:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:05:56,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:56,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:56,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:05:56,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:05:56,372 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:05:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-23 03:05:56,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:05:56,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129223788] [2021-11-23 03:05:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:56,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:05:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:05:56,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:05:56,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:05:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:56,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:05:56,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:05:56,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:05:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:56,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:05:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:05:57,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:05:57,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129223788] [2021-11-23 03:05:57,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129223788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:57,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:57,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:05:57,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47001689] [2021-11-23 03:05:57,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:57,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:05:57,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:05:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:05:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:05:57,214 INFO L87 Difference]: Start difference. First operand 3048 states and 5181 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:10,329 INFO L93 Difference]: Finished difference Result 5539 states and 9703 transitions. [2021-11-23 03:06:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:06:10,330 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 [2021-11-23 03:06:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:10,347 INFO L225 Difference]: With dead ends: 5539 [2021-11-23 03:06:10,348 INFO L226 Difference]: Without dead ends: 5539 [2021-11-23 03:06:10,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:10,349 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 4551 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:10,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 12551 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2021-11-23 03:06:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-11-23 03:06:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3044. [2021-11-23 03:06:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1657 states have (on average 1.911285455642728) internal successors, (3167), 3038 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5173 transitions. [2021-11-23 03:06:11,036 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5173 transitions. Word has length 34 [2021-11-23 03:06:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:11,036 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5173 transitions. [2021-11-23 03:06:11,036 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) [2021-11-23 03:06:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5173 transitions. [2021-11-23 03:06:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:06:11,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:11,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:11,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:11,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:11,251 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-23 03:06:11,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:11,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542249327] [2021-11-23 03:06:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:11,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:11,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:11,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:06:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:11,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:06:11,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:11,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:11,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542249327] [2021-11-23 03:06:11,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542249327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:11,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:11,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:06:11,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701867262] [2021-11-23 03:06:11,690 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:11,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:06:11,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:06:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:06:11,691 INFO L87 Difference]: Start difference. First operand 3044 states and 5173 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:11,781 INFO L93 Difference]: Finished difference Result 3032 states and 5153 transitions. [2021-11-23 03:06:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:06:11,781 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 [2021-11-23 03:06:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:11,793 INFO L225 Difference]: With dead ends: 3032 [2021-11-23 03:06:11,793 INFO L226 Difference]: Without dead ends: 3032 [2021-11-23 03:06:11,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:11,794 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 1882 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:11,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6320 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:06:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-23 03:06:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3032. [2021-11-23 03:06:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1645 states have (on average 1.9130699088145897) internal successors, (3147), 3026 states have internal predecessors, (3147), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5153 transitions. [2021-11-23 03:06:12,234 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 5153 transitions. Word has length 52 [2021-11-23 03:06:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:12,235 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 5153 transitions. [2021-11-23 03:06:12,235 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) [2021-11-23 03:06:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 5153 transitions. [2021-11-23 03:06:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:06:12,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:12,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:12,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:12,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:12,448 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-23 03:06:12,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:12,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940981313] [2021-11-23 03:06:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:12,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:12,451 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:12,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:06:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:12,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:06:12,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:12,750 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 [2021-11-23 03:06:12,758 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 [2021-11-23 03:06:13,390 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:06:13,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-23 03:06:13,398 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:06:13,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-23 03:06:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:13,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:18,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:18,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940981313] [2021-11-23 03:06:18,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940981313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:18,443 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:18,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:06:18,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013856021] [2021-11-23 03:06:18,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:18,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:06:18,445 INFO L87 Difference]: Start difference. First operand 3032 states and 5153 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:31,285 INFO L93 Difference]: Finished difference Result 5433 states and 9586 transitions. [2021-11-23 03:06:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:06:31,285 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 [2021-11-23 03:06:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:31,303 INFO L225 Difference]: With dead ends: 5433 [2021-11-23 03:06:31,304 INFO L226 Difference]: Without dead ends: 5433 [2021-11-23 03:06:31,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-23 03:06:31,305 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 3042 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2272 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:31,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9689 Invalid, 6015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3688 Invalid, 0 Unknown, 2272 Unchecked, 12.6s Time] [2021-11-23 03:06:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-23 03:06:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3010. [2021-11-23 03:06:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 1655 states have (on average 1.8930513595166163) internal successors, (3133), 3004 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5139 transitions. [2021-11-23 03:06:32,010 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5139 transitions. Word has length 60 [2021-11-23 03:06:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:32,011 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5139 transitions. [2021-11-23 03:06:32,011 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) [2021-11-23 03:06:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5139 transitions. [2021-11-23 03:06:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:06:32,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:32,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:32,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:32,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:32,228 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-23 03:06:32,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:32,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482297824] [2021-11-23 03:06:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:32,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:32,230 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:32,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:06:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:32,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:06:32,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:32,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:32,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:06:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:33,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:33,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482297824] [2021-11-23 03:06:33,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482297824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:33,069 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:33,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:06:33,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999460896] [2021-11-23 03:06:33,070 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:33,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:33,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:33,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:33,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:33,070 INFO L87 Difference]: Start difference. First operand 3010 states and 5139 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:38,274 INFO L93 Difference]: Finished difference Result 3008 states and 5137 transitions. [2021-11-23 03:06:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:06:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 03:06:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:38,287 INFO L225 Difference]: With dead ends: 3008 [2021-11-23 03:06:38,287 INFO L226 Difference]: Without dead ends: 3008 [2021-11-23 03:06:38,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:38,288 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4833 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:38,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 4125 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:06:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-23 03:06:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-11-23 03:06:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1655 states have (on average 1.8918429003021149) internal successors, (3131), 3002 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 5137 transitions. [2021-11-23 03:06:38,703 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 5137 transitions. Word has length 62 [2021-11-23 03:06:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 5137 transitions. [2021-11-23 03:06:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 5137 transitions. [2021-11-23 03:06:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:06:38,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:38,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:38,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:38,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:38,922 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-23 03:06:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309746862] [2021-11-23 03:06:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:38,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:38,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:38,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:06:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:39,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:06:39,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:39,258 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 [2021-11-23 03:06:39,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 03:06:39,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:06:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:39,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:39,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:39,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309746862] [2021-11-23 03:06:39,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309746862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:39,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:39,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:06:39,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289935776] [2021-11-23 03:06:39,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:39,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:39,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:39,423 INFO L87 Difference]: Start difference. First operand 3008 states and 5137 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:41,880 INFO L93 Difference]: Finished difference Result 3007 states and 5136 transitions. [2021-11-23 03:06:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:06:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 03:06:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:41,889 INFO L225 Difference]: With dead ends: 3007 [2021-11-23 03:06:41,890 INFO L226 Difference]: Without dead ends: 3007 [2021-11-23 03:06:41,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:06:41,891 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:41,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10234 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:06:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-23 03:06:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2021-11-23 03:06:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1655 states have (on average 1.891238670694864) internal successors, (3130), 3001 states have internal predecessors, (3130), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 5136 transitions. [2021-11-23 03:06:42,305 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 5136 transitions. Word has length 65 [2021-11-23 03:06:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:42,306 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 5136 transitions. [2021-11-23 03:06:42,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 5136 transitions. [2021-11-23 03:06:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:06:42,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:42,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:42,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:42,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:42,520 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-23 03:06:42,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:42,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799213198] [2021-11-23 03:06:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:42,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:42,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:42,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:42,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:06:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:42,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:06:42,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:42,843 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 [2021-11-23 03:06:42,878 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 [2021-11-23 03:06:42,890 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 [2021-11-23 03:06:42,955 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 [2021-11-23 03:06:42,959 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 [2021-11-23 03:06:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:42,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:43,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799213198] [2021-11-23 03:06:43,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799213198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:43,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:43,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 03:06:43,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957733772] [2021-11-23 03:06:43,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:43,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:06:43,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:06:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:43,282 INFO L87 Difference]: Start difference. First operand 3007 states and 5136 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:50,614 INFO L93 Difference]: Finished difference Result 3006 states and 5135 transitions. [2021-11-23 03:06:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:06:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 03:06:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:50,621 INFO L225 Difference]: With dead ends: 3006 [2021-11-23 03:06:50,622 INFO L226 Difference]: Without dead ends: 3006 [2021-11-23 03:06:50,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:06:50,622 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 3 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:50,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12724 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:06:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-23 03:06:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3006. [2021-11-23 03:06:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 1654 states have (on average 1.8917775090689237) internal successors, (3129), 3000 states have internal predecessors, (3129), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-23 03:06:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5135 transitions. [2021-11-23 03:06:50,910 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5135 transitions. Word has length 65 [2021-11-23 03:06:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:50,911 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 5135 transitions. [2021-11-23 03:06:50,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:06:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5135 transitions. [2021-11-23 03:06:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:06:50,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:50,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:50,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 03:06:51,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:51,126 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-11-23 03:06:51,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:51,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032644883] [2021-11-23 03:06:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:51,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:51,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:51,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:06:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:06:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:51,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:51,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:51,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032644883] [2021-11-23 03:06:51,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032644883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:51,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:51,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:06:51,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862215401] [2021-11-23 03:06:51,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:51,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:06:51,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:06:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:06:51,676 INFO L87 Difference]: Start difference. First operand 3006 states and 5135 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:06:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:51,825 INFO L93 Difference]: Finished difference Result 3016 states and 5148 transitions. [2021-11-23 03:06:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:06:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-23 03:06:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:51,863 INFO L225 Difference]: With dead ends: 3016 [2021-11-23 03:06:51,863 INFO L226 Difference]: Without dead ends: 3016 [2021-11-23 03:06:51,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:51,865 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 9 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8601 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:51,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8601 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:06:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-11-23 03:06:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-11-23 03:06:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1662 states have (on average 1.8898916967509025) internal successors, (3141), 3009 states have internal predecessors, (3141), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-23 03:06:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5148 transitions. [2021-11-23 03:06:52,287 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5148 transitions. Word has length 73 [2021-11-23 03:06:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5148 transitions. [2021-11-23 03:06:52,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:06:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5148 transitions. [2021-11-23 03:06:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 03:06:52,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:52,291 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:52,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-23 03:06:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:52,504 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 142057039, now seen corresponding path program 1 times [2021-11-23 03:06:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764403731] [2021-11-23 03:06:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:52,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:52,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:52,506 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:06:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:52,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:06:52,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:52,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:53,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764403731] [2021-11-23 03:06:53,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764403731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:53,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1696742897] [2021-11-23 03:06:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:53,144 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:06:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:06:53,148 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:06:53,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-23 03:06:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:53,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:06:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:53,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:53,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1696742897] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874569407] [2021-11-23 03:06:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:53,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:06:53,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:06:53,728 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:06:53,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 03:06:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:53,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:06:53,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:54,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:54,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874569407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:54,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:06:54,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 03:06:54,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113483906] [2021-11-23 03:06:54,409 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:06:54,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:06:54,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:06:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:06:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:06:54,411 INFO L87 Difference]: Start difference. First operand 3016 states and 5148 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:06:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:54,962 INFO L93 Difference]: Finished difference Result 3030 states and 5165 transitions. [2021-11-23 03:06:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:06:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-23 03:06:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:54,978 INFO L225 Difference]: With dead ends: 3030 [2021-11-23 03:06:54,978 INFO L226 Difference]: Without dead ends: 3024 [2021-11-23 03:06:54,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:06:54,980 INFO L933 BasicCegarLoop]: 2870 mSDtfsCounter, 39 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:54,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17198 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:06:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-11-23 03:06:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2021-11-23 03:06:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1668 states have (on average 1.8872901678657075) internal successors, (3148), 3015 states have internal predecessors, (3148), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-23 03:06:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5155 transitions. [2021-11-23 03:06:55,375 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5155 transitions. Word has length 75 [2021-11-23 03:06:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:55,375 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5155 transitions. [2021-11-23 03:06:55,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:06:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5155 transitions. [2021-11-23 03:06:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:06:55,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:55,380 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:55,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-23 03:06:55,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:55,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:56,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:06:56,000 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:06:56,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2028559503, now seen corresponding path program 2 times [2021-11-23 03:06:56,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:06:56,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834628672] [2021-11-23 03:06:56,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:06:56,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:06:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:06:56,003 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:06:56,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:06:56,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:06:56,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:06:56,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:06:56,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:56,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:57,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:06:57,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834628672] [2021-11-23 03:06:57,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834628672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:57,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1230032808] [2021-11-23 03:06:57,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:06:57,060 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:06:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:06:57,061 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:06:57,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 03:06:57,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:06:57,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:06:57,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:06:57,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:57,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:06:58,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1230032808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:58,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497756890] [2021-11-23 03:06:58,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:06:58,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:06:58,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:06:58,194 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:06:58,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f6ce7a4-0676-4aa9-9b9c-52d3dd85e12a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 03:07:25,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:07:25,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:07:25,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 03:07:25,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:07:25,650 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 [2021-11-23 03:07:25,886 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:07:25,886 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 13 treesize of output 13 [2021-11-23 03:07:25,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:07:25,977 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 [2021-11-23 03:07:25,989 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 23 treesize of output 19 [2021-11-23 03:07:26,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-23 03:07:26,226 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 19 treesize of output 13 [2021-11-23 03:09:52,666 WARN L227 SmtUtils]: Spent 36.41s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:09:52,667 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 03:09:52,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-23 03:10:15,100 WARN L227 SmtUtils]: Spent 22.42s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:10:15,101 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-23 03:10:15,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-23 03:10:28,496 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 03:10:28,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-23 03:10:28,518 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 03:10:28,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-23 03:10:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:10:40,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:11:01,904 WARN L227 SmtUtils]: Spent 20.24s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:11:20,065 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-23 03:15:18,565 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from false [2021-11-23 03:15:20,577 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-23 03:17:04,333 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse0 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9)) (.cse3 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from true [2021-11-23 03:18:03,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:18:03,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 03:18:03,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-23 03:18:03,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916462871] [2021-11-23 03:18:03,016 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 03:18:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:18:03,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:18:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:18:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1143, Unknown=186, NotChecked=228, Total=1722 [2021-11-23 03:18:03,019 INFO L87 Difference]: Start difference. First operand 3022 states and 5155 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)