./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH --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 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:44,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:44,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:44,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:44,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:44,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:44,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:44,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:44,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:44,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:44,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:44,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:44,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:44,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:44,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:44,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:44,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:44,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:44,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:44,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:44,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:44,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:44,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:44,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:44,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:44,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:44,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:44,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:44,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:44,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:44,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:44,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:44,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:44,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:44,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:44,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:44,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:44,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:44,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:44,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:44,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:44,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:06:44,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:44,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:44,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:44,260 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:44,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:44,260 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:44,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:44,261 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:44,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:44,263 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:44,263 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:44,264 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:44,264 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:44,264 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:44,265 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:44,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:06:44,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:06:44,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:44,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:44,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:06:44,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:44,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:44,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:44,270 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:06:44,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:06:44,270 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:06:44,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:44,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:44,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:44,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:44,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:44,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:44,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:44,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:44,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:44,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:44,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:44,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:44,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:44,275 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_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2021-11-03 04:06:44,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:44,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:44,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:44,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:44,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:44,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-03 04:06:44,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/3624859f4/ac7c3d7b62e24feb95452bd963075748/FLAGa8796e58c [2021-11-03 04:06:45,234 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:45,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-03 04:06:45,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/3624859f4/ac7c3d7b62e24feb95452bd963075748/FLAGa8796e58c [2021-11-03 04:06:45,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/3624859f4/ac7c3d7b62e24feb95452bd963075748 [2021-11-03 04:06:45,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:45,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:45,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:45,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:45,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:45,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:45" (1/1) ... [2021-11-03 04:06:45,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9c1d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:45, skipping insertion in model container [2021-11-03 04:06:45,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:45" (1/1) ... [2021-11-03 04:06:45,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:45,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:45,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-03 04:06:46,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:46,130 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) [2021-11-03 04:06:46,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52ac722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:46, skipping insertion in model container [2021-11-03 04:06:46,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:46,138 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:06:46,141 INFO L168 Benchmark]: Toolchain (without parser) took 644.40 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 49.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:46,143 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:06:46,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.69 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 49.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:46,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 641.69 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 49.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH --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 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:48,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:48,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:48,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:48,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:48,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:48,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:48,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:48,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:48,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:48,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:48,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:48,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:48,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:48,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:48,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:48,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:49,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:49,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:49,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:49,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:49,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:49,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:49,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:49,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:49,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:49,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:49,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:49,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:49,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:49,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:49,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:49,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:49,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:49,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:49,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:49,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:49,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:49,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:49,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:49,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:49,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:06:49,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:49,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:49,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:49,114 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:49,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:49,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:49,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:49,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:49,116 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:49,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:06:49,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:06:49,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:49,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:49,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:06:49,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:49,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:49,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:49,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:06:49,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:06:49,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:06:49,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:49,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:49,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:06:49,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:06:49,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:49,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:49,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:49,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:06:49,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:49,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:49,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:49,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:49,125 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:06:49,125 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:06:49,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:49,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:49,126 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_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2021-11-03 04:06:49,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:49,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:49,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:49,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:49,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:49,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-03 04:06:49,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/5ea9251bd/6aec485c45e74d56b8645964bf13bb5f/FLAG87d876056 [2021-11-03 04:06:50,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:50,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-11-03 04:06:50,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/5ea9251bd/6aec485c45e74d56b8645964bf13bb5f/FLAG87d876056 [2021-11-03 04:06:50,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/data/5ea9251bd/6aec485c45e74d56b8645964bf13bb5f [2021-11-03 04:06:50,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:50,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:50,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:50,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:50,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:50,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:50" (1/1) ... [2021-11-03 04:06:50,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75269c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:50, skipping insertion in model container [2021-11-03 04:06:50,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:50" (1/1) ... [2021-11-03 04:06:50,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:50,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:51,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-03 04:06:51,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:51,468 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:06:51,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:51,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-03 04:06:51,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:51,582 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:06:51,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i[33021,33034] [2021-11-03 04:06:51,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:51,724 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:06:51,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51 WrapperNode [2021-11-03 04:06:51,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:51,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:51,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:06:51,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:06:51,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:51,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:06:51,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:06:51,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:06:51,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:06:51,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:06:51,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:06:51,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:06:51,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (1/1) ... [2021-11-03 04:06:51,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:52,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:06:52,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:06:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:06:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:06:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:06:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:06:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:06:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:06:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:06:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:06:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:06:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:06:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:06:56,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:06:56,697 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-03 04:06:56,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:56 BoogieIcfgContainer [2021-11-03 04:06:56,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:06:56,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:06:56,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:06:56,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:06:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:50" (1/3) ... [2021-11-03 04:06:56,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0b6bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:56, skipping insertion in model container [2021-11-03 04:06:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:51" (2/3) ... [2021-11-03 04:06:56,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0b6bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:56, skipping insertion in model container [2021-11-03 04:06:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:56" (3/3) ... [2021-11-03 04:06:56,719 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i [2021-11-03 04:06:56,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:06:56,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 444 error locations. [2021-11-03 04:06:56,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:06:56,797 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 [2021-11-03 04:06:56,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 444 error locations. [2021-11-03 04:06:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 440 states have (on average 2.2454545454545456) internal successors, (988), 884 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:06:56,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:56,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:06:56,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:06:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 04:06:56,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:06:56,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016354855] [2021-11-03 04:06:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:56,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:06:56,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:06:56,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:06:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:06:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:57,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:06:57,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:57,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:57,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:06:57,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016354855] [2021-11-03 04:06:57,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016354855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:57,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:57,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:06:57,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118902806] [2021-11-03 04:06:57,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:06:57,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:06:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:06:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:06:57,204 INFO L87 Difference]: Start difference. First operand has 885 states, 440 states have (on average 2.2454545454545456) internal successors, (988), 884 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 04:06:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:57,273 INFO L93 Difference]: Finished difference Result 876 states and 925 transitions. [2021-11-03 04:06:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:06:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-03 04:06:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:57,298 INFO L225 Difference]: With dead ends: 876 [2021-11-03 04:06:57,299 INFO L226 Difference]: Without dead ends: 874 [2021-11-03 04:06:57,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:06:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-03 04:06:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-11-03 04:06:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 435 states have (on average 2.12183908045977) internal successors, (923), 873 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 923 transitions. [2021-11-03 04:06:57,433 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 923 transitions. Word has length 5 [2021-11-03 04:06:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:57,434 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 923 transitions. [2021-11-03 04:06:57,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 04:06:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 923 transitions. [2021-11-03 04:06:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:06:57,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:57,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:06:57,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:06:57,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:06:57,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:06:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 04:06:57,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:06:57,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904800715] [2021-11-03 04:06:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:57,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:06:57,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:06:57,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:06:57,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:06:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:57,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:06:57,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:57,871 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 [2021-11-03 04:06:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:57,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:57,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:06:57,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904800715] [2021-11-03 04:06:57,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904800715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:57,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:57,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:06:57,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337827146] [2021-11-03 04:06:57,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:06:57,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:06:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:06:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:57,928 INFO L87 Difference]: Start difference. First operand 874 states and 923 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 04:06:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:59,790 INFO L93 Difference]: Finished difference Result 832 states and 882 transitions. [2021-11-03 04:06:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:06:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-03 04:06:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:59,808 INFO L225 Difference]: With dead ends: 832 [2021-11-03 04:06:59,809 INFO L226 Difference]: Without dead ends: 832 [2021-11-03 04:06:59,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:06:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-11-03 04:06:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 825. [2021-11-03 04:06:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 435 states have (on average 2.0091954022988507) internal successors, (874), 824 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 874 transitions. [2021-11-03 04:06:59,861 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 874 transitions. Word has length 5 [2021-11-03 04:06:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:59,861 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 874 transitions. [2021-11-03 04:06:59,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 04:06:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 874 transitions. [2021-11-03 04:06:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:06:59,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:59,862 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:06:59,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:00,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:00,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 04:07:00,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:00,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263215013] [2021-11-03 04:07:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:00,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:00,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:00,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:07:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:00,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:00,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:00,226 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 [2021-11-03 04:07:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:00,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:00,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:00,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263215013] [2021-11-03 04:07:00,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263215013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:00,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:00,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:07:00,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767562027] [2021-11-03 04:07:00,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:00,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:00,387 INFO L87 Difference]: Start difference. First operand 825 states and 874 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 04:07:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:04,254 INFO L93 Difference]: Finished difference Result 898 states and 951 transitions. [2021-11-03 04:07:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:07:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-03 04:07:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:04,260 INFO L225 Difference]: With dead ends: 898 [2021-11-03 04:07:04,261 INFO L226 Difference]: Without dead ends: 898 [2021-11-03 04:07:04,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-03 04:07:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 847. [2021-11-03 04:07:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 467 states have (on average 1.9914346895074946) internal successors, (930), 846 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 930 transitions. [2021-11-03 04:07:04,302 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 930 transitions. Word has length 5 [2021-11-03 04:07:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:04,303 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 930 transitions. [2021-11-03 04:07:04,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 04:07:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 930 transitions. [2021-11-03 04:07:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:07:04,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:04,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:07:04,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:04,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:04,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash 890510813, now seen corresponding path program 1 times [2021-11-03 04:07:04,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:04,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339265615] [2021-11-03 04:07:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:04,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:04,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:04,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:07:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:04,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:04,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:04,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339265615] [2021-11-03 04:07:04,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339265615] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:04,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:04,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:07:04,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945138990] [2021-11-03 04:07:04,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:04,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:04,694 INFO L87 Difference]: Start difference. First operand 847 states and 930 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 04:07:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:04,796 INFO L93 Difference]: Finished difference Result 1438 states and 1582 transitions. [2021-11-03 04:07:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:07:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-03 04:07:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:04,806 INFO L225 Difference]: With dead ends: 1438 [2021-11-03 04:07:04,806 INFO L226 Difference]: Without dead ends: 1438 [2021-11-03 04:07:04,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-11-03 04:07:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1178. [2021-11-03 04:07:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 798 states have (on average 1.9824561403508771) internal successors, (1582), 1177 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1582 transitions. [2021-11-03 04:07:04,848 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1582 transitions. Word has length 6 [2021-11-03 04:07:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:04,849 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1582 transitions. [2021-11-03 04:07:04,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 04:07:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1582 transitions. [2021-11-03 04:07:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:07:04,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:04,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:04,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:05,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:05,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 04:07:05,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:05,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937427905] [2021-11-03 04:07:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:05,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:05,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:05,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:05,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:07:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:05,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:05,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:05,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:05,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:05,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937427905] [2021-11-03 04:07:05,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937427905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:05,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:05,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:07:05,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71215824] [2021-11-03 04:07:05,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:05,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:05,317 INFO L87 Difference]: Start difference. First operand 1178 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:05,356 INFO L93 Difference]: Finished difference Result 1118 states and 1496 transitions. [2021-11-03 04:07:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:07:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:05,364 INFO L225 Difference]: With dead ends: 1118 [2021-11-03 04:07:05,364 INFO L226 Difference]: Without dead ends: 1118 [2021-11-03 04:07:05,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-11-03 04:07:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1118. [2021-11-03 04:07:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 762 states have (on average 1.963254593175853) internal successors, (1496), 1117 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1496 transitions. [2021-11-03 04:07:05,401 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1496 transitions. Word has length 11 [2021-11-03 04:07:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:05,402 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1496 transitions. [2021-11-03 04:07:05,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1496 transitions. [2021-11-03 04:07:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:07:05,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:05,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:05,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:05,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:05,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 04:07:05,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:05,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794449322] [2021-11-03 04:07:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:05,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:05,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:05,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:07:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:05,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:05,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:05,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:05,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:05,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794449322] [2021-11-03 04:07:05,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794449322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:05,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:05,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:07:05,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927064787] [2021-11-03 04:07:05,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:07:05,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:07:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:07:05,858 INFO L87 Difference]: Start difference. First operand 1118 states and 1496 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:05,959 INFO L93 Difference]: Finished difference Result 1090 states and 1440 transitions. [2021-11-03 04:07:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:07:05,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2021-11-03 04:07:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:05,967 INFO L225 Difference]: With dead ends: 1090 [2021-11-03 04:07:05,967 INFO L226 Difference]: Without dead ends: 1090 [2021-11-03 04:07:05,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:07:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-03 04:07:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1088. [2021-11-03 04:07:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 746 states have (on average 1.9276139410187667) internal successors, (1438), 1087 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1438 transitions. [2021-11-03 04:07:05,998 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1438 transitions. Word has length 13 [2021-11-03 04:07:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:05,998 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1438 transitions. [2021-11-03 04:07:05,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1438 transitions. [2021-11-03 04:07:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:07:05,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:06,000 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:06,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:06,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:06,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 04:07:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:06,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246919093] [2021-11-03 04:07:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:06,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:06,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:07:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:06,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:06,377 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 [2021-11-03 04:07:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:06,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:06,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:06,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246919093] [2021-11-03 04:07:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246919093] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:06,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:06,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:06,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139976381] [2021-11-03 04:07:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:06,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:06,627 INFO L87 Difference]: Start difference. First operand 1088 states and 1438 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,948 INFO L93 Difference]: Finished difference Result 1341 states and 1708 transitions. [2021-11-03 04:07:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:07:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:07:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,958 INFO L225 Difference]: With dead ends: 1341 [2021-11-03 04:07:08,958 INFO L226 Difference]: Without dead ends: 1341 [2021-11-03 04:07:08,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:07:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-11-03 04:07:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1084. [2021-11-03 04:07:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 746 states have (on average 1.9168900804289544) internal successors, (1430), 1083 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1430 transitions. [2021-11-03 04:07:08,997 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1430 transitions. Word has length 27 [2021-11-03 04:07:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,998 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1430 transitions. [2021-11-03 04:07:08,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1430 transitions. [2021-11-03 04:07:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:07:09,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:09,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:09,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:09,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:09,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 04:07:09,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:09,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072172759] [2021-11-03 04:07:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:09,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:09,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:09,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:09,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:07:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:09,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:07:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:09,425 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 [2021-11-03 04:07:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:09,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:10,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:10,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072172759] [2021-11-03 04:07:10,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072172759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:10,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:10,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:07:10,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941871124] [2021-11-03 04:07:10,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:07:10,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:07:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:07:10,233 INFO L87 Difference]: Start difference. First operand 1084 states and 1430 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-03 04:07:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:16,435 INFO L93 Difference]: Finished difference Result 1404 states and 1743 transitions. [2021-11-03 04:07:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:07:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 27 [2021-11-03 04:07:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:16,445 INFO L225 Difference]: With dead ends: 1404 [2021-11-03 04:07:16,445 INFO L226 Difference]: Without dead ends: 1404 [2021-11-03 04:07:16,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:07:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-03 04:07:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1080. [2021-11-03 04:07:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 746 states have (on average 1.906166219839142) internal successors, (1422), 1079 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1422 transitions. [2021-11-03 04:07:16,483 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1422 transitions. Word has length 27 [2021-11-03 04:07:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:16,484 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1422 transitions. [2021-11-03 04:07:16,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-03 04:07:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1422 transitions. [2021-11-03 04:07:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:07:16,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:16,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:16,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:07:16,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:16,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:16,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 04:07:16,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:16,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894102368] [2021-11-03 04:07:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:16,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:16,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:16,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:07:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:16,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:17,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:17,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:17,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894102368] [2021-11-03 04:07:17,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894102368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:17,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:17,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:07:17,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521918764] [2021-11-03 04:07:17,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:07:17,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:17,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:07:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:07:17,353 INFO L87 Difference]: Start difference. First operand 1080 states and 1422 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:17,427 INFO L93 Difference]: Finished difference Result 1068 states and 1402 transitions. [2021-11-03 04:07:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:07:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-03 04:07:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:17,436 INFO L225 Difference]: With dead ends: 1068 [2021-11-03 04:07:17,436 INFO L226 Difference]: Without dead ends: 1068 [2021-11-03 04:07:17,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:07:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-03 04:07:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-11-03 04:07:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 734 states have (on average 1.9100817438692097) internal successors, (1402), 1067 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1402 transitions. [2021-11-03 04:07:17,467 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1402 transitions. Word has length 42 [2021-11-03 04:07:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:17,469 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1402 transitions. [2021-11-03 04:07:17,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1402 transitions. [2021-11-03 04:07:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:07:17,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:17,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:17,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:17,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:17,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 04:07:17,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:17,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399707680] [2021-11-03 04:07:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:17,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:17,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:17,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:17,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:07:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:17,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:07:17,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:18,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:18,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:18,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399707680] [2021-11-03 04:07:18,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399707680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:18,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:18,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:18,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152449152] [2021-11-03 04:07:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:18,950 INFO L87 Difference]: Start difference. First operand 1068 states and 1402 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:19,238 INFO L93 Difference]: Finished difference Result 1213 states and 1501 transitions. [2021-11-03 04:07:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-03 04:07:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:19,246 INFO L225 Difference]: With dead ends: 1213 [2021-11-03 04:07:19,247 INFO L226 Difference]: Without dead ends: 1213 [2021-11-03 04:07:19,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-03 04:07:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1018. [2021-11-03 04:07:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 684 states have (on average 1.8961988304093567) internal successors, (1297), 1017 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1297 transitions. [2021-11-03 04:07:19,273 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1297 transitions. Word has length 50 [2021-11-03 04:07:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:19,274 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1297 transitions. [2021-11-03 04:07:19,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1297 transitions. [2021-11-03 04:07:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:07:19,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:19,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:19,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:19,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:19,490 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 04:07:19,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:19,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033334682] [2021-11-03 04:07:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:19,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:19,492 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:19,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:07:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:19,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:07:19,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:19,932 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 [2021-11-03 04:07:19,939 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 [2021-11-03 04:07:20,747 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:07:20,747 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 26 treesize of output 28 [2021-11-03 04:07:20,757 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:07:20,757 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 25 treesize of output 21 [2021-11-03 04:07:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:20,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:26,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:26,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033334682] [2021-11-03 04:07:26,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033334682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:26,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:26,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:07:26,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150034841] [2021-11-03 04:07:26,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:07:26,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:07:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:07:26,783 INFO L87 Difference]: Start difference. First operand 1018 states and 1297 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:38,392 INFO L93 Difference]: Finished difference Result 993 states and 1235 transitions. [2021-11-03 04:07:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:07:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 53 [2021-11-03 04:07:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:38,402 INFO L225 Difference]: With dead ends: 993 [2021-11-03 04:07:38,402 INFO L226 Difference]: Without dead ends: 993 [2021-11-03 04:07:38,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:07:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-03 04:07:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 948. [2021-11-03 04:07:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 652 states have (on average 1.771472392638037) internal successors, (1155), 947 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1155 transitions. [2021-11-03 04:07:38,424 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1155 transitions. Word has length 53 [2021-11-03 04:07:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:38,425 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1155 transitions. [2021-11-03 04:07:38,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1155 transitions. [2021-11-03 04:07:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:07:38,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:38,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:38,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:38,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:38,643 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 04:07:38,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:38,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508132129] [2021-11-03 04:07:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:38,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:38,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:38,645 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:38,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:07:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:39,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:07:39,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:39,179 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 [2021-11-03 04:07:39,199 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 21 treesize of output 17 [2021-11-03 04:07:39,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-03 04:07:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:39,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:39,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:39,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508132129] [2021-11-03 04:07:39,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508132129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:39,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:39,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:07:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501265249] [2021-11-03 04:07:39,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:07:39,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:07:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:07:39,462 INFO L87 Difference]: Start difference. First operand 948 states and 1155 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:44,446 INFO L93 Difference]: Finished difference Result 1400 states and 1637 transitions. [2021-11-03 04:07:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:07:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-03 04:07:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:44,453 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 04:07:44,453 INFO L226 Difference]: Without dead ends: 1400 [2021-11-03 04:07:44,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:07:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-03 04:07:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 947. [2021-11-03 04:07:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 652 states have (on average 1.76840490797546) internal successors, (1153), 946 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1153 transitions. [2021-11-03 04:07:44,478 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1153 transitions. Word has length 59 [2021-11-03 04:07:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:44,479 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1153 transitions. [2021-11-03 04:07:44,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1153 transitions. [2021-11-03 04:07:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:07:44,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:44,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:44,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 04:07:44,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:44,706 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:07:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 04:07:44,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:44,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820065331] [2021-11-03 04:07:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:44,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:44,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:44,708 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:44,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:07:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:45,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:07:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:45,279 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 [2021-11-03 04:07:45,319 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 [2021-11-03 04:07:45,332 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 [2021-11-03 04:07:45,409 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 [2021-11-03 04:07:45,413 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 [2021-11-03 04:07:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:45,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:46,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:46,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:46,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820065331] [2021-11-03 04:07:46,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820065331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:46,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:46,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:07:46,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999106926] [2021-11-03 04:07:46,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:07:46,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:46,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:07:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:07:46,051 INFO L87 Difference]: Start difference. First operand 947 states and 1153 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:03,611 INFO L93 Difference]: Finished difference Result 1287 states and 1521 transitions. [2021-11-03 04:08:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:08:03,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:08:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:03,618 INFO L225 Difference]: With dead ends: 1287 [2021-11-03 04:08:03,618 INFO L226 Difference]: Without dead ends: 1287 [2021-11-03 04:08:03,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:08:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-03 04:08:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 946. [2021-11-03 04:08:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 652 states have (on average 1.7653374233128833) internal successors, (1151), 945 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1151 transitions. [2021-11-03 04:08:03,641 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1151 transitions. Word has length 60 [2021-11-03 04:08:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:03,642 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1151 transitions. [2021-11-03 04:08:03,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1151 transitions. [2021-11-03 04:08:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:08:03,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:03,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:03,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:08:03,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:03,861 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:08:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 04:08:03,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:03,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905346336] [2021-11-03 04:08:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:03,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:03,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:03,863 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:03,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:08:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:08:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:04,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:04,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:04,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905346336] [2021-11-03 04:08:04,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905346336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:08:04,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:08:04,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:08:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184175680] [2021-11-03 04:08:04,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:08:04,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:08:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:08:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:08:04,729 INFO L87 Difference]: Start difference. First operand 946 states and 1151 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:04,945 INFO L93 Difference]: Finished difference Result 1403 states and 1634 transitions. [2021-11-03 04:08:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:08:04,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 04:08:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:04,954 INFO L225 Difference]: With dead ends: 1403 [2021-11-03 04:08:04,955 INFO L226 Difference]: Without dead ends: 1403 [2021-11-03 04:08:04,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:08:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-11-03 04:08:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 952. [2021-11-03 04:08:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 658 states have (on average 1.7583586626139818) internal successors, (1157), 951 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1157 transitions. [2021-11-03 04:08:04,980 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1157 transitions. Word has length 64 [2021-11-03 04:08:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:04,980 INFO L470 AbstractCegarLoop]: Abstraction has 952 states and 1157 transitions. [2021-11-03 04:08:04,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1157 transitions. [2021-11-03 04:08:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:08:04,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:04,982 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:05,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:05,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:05,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:08:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 04:08:05,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:05,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947312238] [2021-11-03 04:08:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:05,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:05,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:05,202 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:05,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:08:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:05,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:08:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:05,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:06,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:06,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947312238] [2021-11-03 04:08:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947312238] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:06,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [651459509] [2021-11-03 04:08:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:06,198 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:08:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:08:06,200 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:08:06,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:08:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:06,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:08:06,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:07,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:07,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [651459509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:07,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950343992] [2021-11-03 04:08:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:08:07,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:08:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:08:07,185 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:08:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:08:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:08:07,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:08:07,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:07,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:08,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950343992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:08,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:08:08,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:08:08,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511314295] [2021-11-03 04:08:08,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:08:08,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:08:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:08:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:08:08,137 INFO L87 Difference]: Start difference. First operand 952 states and 1157 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 04:08:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:08,615 INFO L93 Difference]: Finished difference Result 1415 states and 1646 transitions. [2021-11-03 04:08:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:08:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 66 [2021-11-03 04:08:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:08,622 INFO L225 Difference]: With dead ends: 1415 [2021-11-03 04:08:08,623 INFO L226 Difference]: Without dead ends: 1415 [2021-11-03 04:08:08,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:08:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-11-03 04:08:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 964. [2021-11-03 04:08:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 670 states have (on average 1.7447761194029852) internal successors, (1169), 963 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1169 transitions. [2021-11-03 04:08:08,644 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1169 transitions. Word has length 66 [2021-11-03 04:08:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:08,645 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 1169 transitions. [2021-11-03 04:08:08,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 04:08:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1169 transitions. [2021-11-03 04:08:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:08:08,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:08,646 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:08,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:08,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-03 04:08:09,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:09,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:08:09,270 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:08:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 04:08:09,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:09,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075330140] [2021-11-03 04:08:09,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:08:09,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:09,272 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:09,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:08:10,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:08:10,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:08:10,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:08:10,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:10,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:10,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:10,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075330140] [2021-11-03 04:08:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075330140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:10,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408878396] [2021-11-03 04:08:10,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:08:10,959 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:08:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:08:10,960 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:08:10,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:08:12,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:08:12,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:08:12,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:08:12,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:12,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:13,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [408878396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:13,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392960013] [2021-11-03 04:08:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:08:13,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:08:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:08:13,150 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:08:13,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:08:29,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:08:29,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:08:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:08:29,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:29,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:30,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392960013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:30,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:08:30,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 04:08:30,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946319901] [2021-11-03 04:08:30,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:08:30,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:08:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:08:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:08:30,119 INFO L87 Difference]: Start difference. First operand 964 states and 1169 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:08:33,125 INFO L93 Difference]: Finished difference Result 1439 states and 1670 transitions. [2021-11-03 04:08:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 04:08:33,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 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 70 [2021-11-03 04:08:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:08:33,132 INFO L225 Difference]: With dead ends: 1439 [2021-11-03 04:08:33,132 INFO L226 Difference]: Without dead ends: 1439 [2021-11-03 04:08:33,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:08:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-11-03 04:08:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 988. [2021-11-03 04:08:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 694 states have (on average 1.719020172910663) internal successors, (1193), 987 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1193 transitions. [2021-11-03 04:08:33,152 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1193 transitions. Word has length 70 [2021-11-03 04:08:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:08:33,152 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 1193 transitions. [2021-11-03 04:08:33,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:08:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1193 transitions. [2021-11-03 04:08:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:08:33,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:08:33,154 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:08:33,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:33,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:33,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:08:33,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:08:33,774 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 440 more)] === [2021-11-03 04:08:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:08:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 04:08:33,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:08:33,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000189756] [2021-11-03 04:08:33,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:08:33,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:08:33,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:08:33,777 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:08:33,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:08:35,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:08:35,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:08:35,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:08:35,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:35,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:37,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:08:37,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000189756] [2021-11-03 04:08:37,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000189756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:37,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1751121114] [2021-11-03 04:08:37,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:08:37,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:08:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:08:37,551 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:08:37,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:08:45,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:08:45,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:08:45,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:08:45,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:08:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:46,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:08:46,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1751121114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:08:46,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154382707] [2021-11-03 04:08:46,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:08:46,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:08:46,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:08:46,570 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:08:46,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae6b53b-9811-4345-83ef-1f486fc44eca/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process