./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/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_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:46:47,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:46:47,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:46:47,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:46:47,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:46:47,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:46:47,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:46:47,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:46:47,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:46:47,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:46:47,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:46:47,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:46:47,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:46:47,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:46:47,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:46:47,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:46:47,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:46:47,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:46:47,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:46:47,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:46:47,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:46:47,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:46:47,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:46:47,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:46:47,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:46:47,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:46:47,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:46:47,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:46:47,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:46:47,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:46:47,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:46:47,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:46:47,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:46:47,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:46:47,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:46:47,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:46:47,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:46:47,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:46:47,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:46:47,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:46:47,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:46:47,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:46:47,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:46:47,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:46:47,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:46:47,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:46:47,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:46:47,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:46:47,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:46:47,316 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:46:47,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:46:47,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:46:47,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:46:47,317 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:46:47,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:46:47,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:46:47,318 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:46:47,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:46:47,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:46:47,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:46:47,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:46:47,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:46:47,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:46:47,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:46:47,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:46:47,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:46:47,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:46:47,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:46:47,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:46:47,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:46:47,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:46:47,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:46:47,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:47,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:46:47,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:46:47,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:46:47,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:46:47,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:46:47,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:46:47,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:46:47,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:46:47,325 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_01621d8c-f046-49ee-95db-75f05af754b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2021-11-03 04:46:47,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:46:47,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:46:47,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:46:47,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:46:47,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:46:47,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-03 04:46:47,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/fdbbc168e/a04cf7f24f064289bb69e1d254d7719a/FLAG3bb4b22ae [2021-11-03 04:46:48,252 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:46:48,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-03 04:46:48,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/fdbbc168e/a04cf7f24f064289bb69e1d254d7719a/FLAG3bb4b22ae [2021-11-03 04:46:48,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/fdbbc168e/a04cf7f24f064289bb69e1d254d7719a [2021-11-03 04:46:48,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:46:48,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:46:48,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:48,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:46:48,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:46:48,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:48" (1/1) ... [2021-11-03 04:46:48,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3994b4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:48, skipping insertion in model container [2021-11-03 04:46:48,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:48" (1/1) ... [2021-11-03 04:46:48,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:46:48,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:48,996 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-03 04:46:49,094 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-03 04:46:49,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:49,120 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 04:46:49,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@786c1937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:49, skipping insertion in model container [2021-11-03 04:46:49,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:49,121 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:46:49,123 INFO L168 Benchmark]: Toolchain (without parser) took 607.34 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 53.3 MB in the beginning and 93.1 MB in the end (delta: -39.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:46:49,124 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:46:49,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.05 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 53.1 MB in the beginning and 93.1 MB in the end (delta: -40.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:46:49,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 605.05 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 53.1 MB in the beginning and 93.1 MB in the end (delta: -40.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/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_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:46:51,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:46:51,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:46:51,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:46:51,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:46:51,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:46:51,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:46:51,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:46:51,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:46:51,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:46:51,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:46:51,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:46:51,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:46:51,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:46:51,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:46:51,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:46:51,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:46:51,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:46:51,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:46:51,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:46:51,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:46:51,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:46:51,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:46:51,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:46:51,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:46:51,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:46:51,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:46:51,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:46:51,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:46:51,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:46:51,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:46:51,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:46:51,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:46:51,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:46:51,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:46:51,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:46:51,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:46:51,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:46:51,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:46:51,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:46:51,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:46:51,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:46:51,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:46:51,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:46:51,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:46:51,523 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:46:51,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:46:51,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:46:51,523 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:46:51,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:46:51,524 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:46:51,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:46:51,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:46:51,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:46:51,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:46:51,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:46:51,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:46:51,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:46:51,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:46:51,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:46:51,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:46:51,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:46:51,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:46:51,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:46:51,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:46:51,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:46:51,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:46:51,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:46:51,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:51,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:46:51,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:46:51,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:46:51,531 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:46:51,531 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:46:51,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:46:51,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:46:51,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:46:51,533 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_01621d8c-f046-49ee-95db-75f05af754b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2021-11-03 04:46:51,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:46:51,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:46:51,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:46:51,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:46:51,992 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:46:51,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-03 04:46:52,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/0a6e46e0b/6e350ae7ba7e4ba1aa57136ec498aba5/FLAG27b20c11e [2021-11-03 04:46:52,705 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:46:52,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-03 04:46:52,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/0a6e46e0b/6e350ae7ba7e4ba1aa57136ec498aba5/FLAG27b20c11e [2021-11-03 04:46:52,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/data/0a6e46e0b/6e350ae7ba7e4ba1aa57136ec498aba5 [2021-11-03 04:46:52,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:46:52,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:46:52,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:52,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:46:52,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:46:52,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:52" (1/1) ... [2021-11-03 04:46:52,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:52, skipping insertion in model container [2021-11-03 04:46:52,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:52" (1/1) ... [2021-11-03 04:46:53,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:46:53,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:53,483 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-03 04:46:53,585 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-03 04:46:53,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:53,648 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:46:53,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:53,713 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-03 04:46:53,814 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-03 04:46:53,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:53,827 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:46:53,853 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-03 04:46:53,951 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_01621d8c-f046-49ee-95db-75f05af754b4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-03 04:46:53,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:54,033 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:46:54,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54 WrapperNode [2021-11-03 04:46:54,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:54,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:46:54,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:46:54,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:46:54,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:46:54,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:46:54,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:46:54,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:46:54,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:46:54,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:46:54,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:46:54,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:46:54,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (1/1) ... [2021-11-03 04:46:54,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:54,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:46:54,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:46:54,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:46:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:46:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:46:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:46:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:46:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:46:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:46:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:47:00,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:47:00,761 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 04:47:00,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:47:00 BoogieIcfgContainer [2021-11-03 04:47:00,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:47:00,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:47:00,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:47:00,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:47:00,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:46:52" (1/3) ... [2021-11-03 04:47:00,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00387e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:47:00, skipping insertion in model container [2021-11-03 04:47:00,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:54" (2/3) ... [2021-11-03 04:47:00,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00387e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:47:00, skipping insertion in model container [2021-11-03 04:47:00,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:47:00" (3/3) ... [2021-11-03 04:47:00,771 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2021-11-03 04:47:00,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:47:00,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:47:00,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:47:00,831 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 04:47:00,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:47:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 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 04:47:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:47:00,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:00,866 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:47:00,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-03 04:47:00,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:00,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457592054] [2021-11-03 04:47:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:00,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:00,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:00,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:00,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:47:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:01,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:47:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:01,189 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 04:47:01,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:01,219 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 04:47:01,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:01,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457592054] [2021-11-03 04:47:01,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457592054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:01,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:01,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:47:01,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710563536] [2021-11-03 04:47:01,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:47:01,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:47:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:47:01,250 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 0 states have call successors, (0), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:47:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:01,306 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-03 04:47:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:47:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:47:01,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:01,328 INFO L225 Difference]: With dead ends: 410 [2021-11-03 04:47:01,328 INFO L226 Difference]: Without dead ends: 173 [2021-11-03 04:47:01,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 04:47:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-03 04:47:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-03 04:47:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 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 04:47:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-03 04:47:01,373 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-03 04:47:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:01,373 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-03 04:47:01,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:47:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-03 04:47:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:47:01,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:01,376 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] [2021-11-03 04:47:01,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:01,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:01,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-03 04:47:01,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:01,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783286130] [2021-11-03 04:47:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:01,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:01,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:01,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:47:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:01,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:01,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:02,000 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 04:47:02,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:02,179 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 04:47:02,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:02,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783286130] [2021-11-03 04:47:02,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783286130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:02,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:02,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:47:02,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107549530] [2021-11-03 04:47:02,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:47:02,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:47:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:47:02,183 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 04:47:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:02,345 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2021-11-03 04:47:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:02,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-11-03 04:47:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:02,348 INFO L225 Difference]: With dead ends: 264 [2021-11-03 04:47:02,348 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 04:47:02,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 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 04:47:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 04:47:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-03 04:47:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 175 states have internal predecessors, (220), 0 states have call successors, (0), 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 04:47:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2021-11-03 04:47:02,364 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 44 [2021-11-03 04:47:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:02,364 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2021-11-03 04:47:02,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 04:47:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2021-11-03 04:47:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:47:02,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:02,367 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] [2021-11-03 04:47:02,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:02,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:02,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash -317554283, now seen corresponding path program 1 times [2021-11-03 04:47:02,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:02,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624372753] [2021-11-03 04:47:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:02,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:02,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:02,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:02,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:47:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:02,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:47:02,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:03,019 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 04:47:03,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:03,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:03,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624372753] [2021-11-03 04:47:03,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624372753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:03,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:03,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 04:47:03,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006999185] [2021-11-03 04:47:03,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:47:03,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:47:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:47:03,595 INFO L87 Difference]: Start difference. First operand 176 states and 220 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 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 04:47:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:03,706 INFO L93 Difference]: Finished difference Result 260 states and 320 transitions. [2021-11-03 04:47:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 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 44 [2021-11-03 04:47:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:03,709 INFO L225 Difference]: With dead ends: 260 [2021-11-03 04:47:03,709 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 04:47:03,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:47:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 04:47:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-03 04:47:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 169 states have internal predecessors, (210), 0 states have call successors, (0), 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 04:47:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-03 04:47:03,721 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 44 [2021-11-03 04:47:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-03 04:47:03,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 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 04:47:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-03 04:47:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:47:03,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:03,725 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] [2021-11-03 04:47:03,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:03,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:03,945 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -575719721, now seen corresponding path program 1 times [2021-11-03 04:47:03,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:03,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278926855] [2021-11-03 04:47:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:03,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:03,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:03,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:47:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:04,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:04,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:04,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:47:04,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:47:04,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:47:04,458 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:47:04,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:47:04,532 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:47:04,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 04:47:04,659 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 04:47:04,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:04,844 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 04:47:04,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:04,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278926855] [2021-11-03 04:47:04,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278926855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:04,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:04,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:47:04,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854622161] [2021-11-03 04:47:04,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:47:04,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:47:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:47:04,847 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 04:47:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:11,674 INFO L93 Difference]: Finished difference Result 447 states and 536 transitions. [2021-11-03 04:47:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:47:11,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 44 [2021-11-03 04:47:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:11,678 INFO L225 Difference]: With dead ends: 447 [2021-11-03 04:47:11,678 INFO L226 Difference]: Without dead ends: 367 [2021-11-03 04:47:11,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:47:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-03 04:47:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 172. [2021-11-03 04:47:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 171 states have internal predecessors, (212), 0 states have call successors, (0), 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 04:47:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-03 04:47:11,700 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 44 [2021-11-03 04:47:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:11,701 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-03 04:47:11,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 04:47:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-03 04:47:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 04:47:11,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:11,705 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:11,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:11,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1988408325, now seen corresponding path program 1 times [2021-11-03 04:47:11,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:11,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711732406] [2021-11-03 04:47:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:11,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:11,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:11,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:47:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:12,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:12,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:12,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:12,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711732406] [2021-11-03 04:47:12,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711732406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:12,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:12,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:47:12,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349732299] [2021-11-03 04:47:12,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:47:12,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:47:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:47:12,901 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:47:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:13,034 INFO L93 Difference]: Finished difference Result 349 states and 432 transitions. [2021-11-03 04:47:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-11-03 04:47:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:13,036 INFO L225 Difference]: With dead ends: 349 [2021-11-03 04:47:13,036 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 04:47:13,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 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 04:47:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 04:47:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-03 04:47:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 174 states have internal predecessors, (207), 0 states have call successors, (0), 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 04:47:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-11-03 04:47:13,046 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 96 [2021-11-03 04:47:13,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:13,047 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-11-03 04:47:13,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:47:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-11-03 04:47:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 04:47:13,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:13,051 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:13,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:13,269 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-03 04:47:13,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:13,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847857965] [2021-11-03 04:47:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:13,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:13,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:13,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:47:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:13,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:13,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:14,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:14,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847857965] [2021-11-03 04:47:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847857965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:14,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:14,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:47:14,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100899389] [2021-11-03 04:47:14,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:47:14,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:47:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:47:14,720 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:47:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:15,426 INFO L93 Difference]: Finished difference Result 450 states and 525 transitions. [2021-11-03 04:47:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:47:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 04:47:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:15,429 INFO L225 Difference]: With dead ends: 450 [2021-11-03 04:47:15,429 INFO L226 Difference]: Without dead ends: 279 [2021-11-03 04:47:15,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 04:47:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-03 04:47:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2021-11-03 04:47:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 266 states have internal predecessors, (314), 0 states have call successors, (0), 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 04:47:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 314 transitions. [2021-11-03 04:47:15,441 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 314 transitions. Word has length 96 [2021-11-03 04:47:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:15,442 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 314 transitions. [2021-11-03 04:47:15,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:47:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 314 transitions. [2021-11-03 04:47:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 04:47:15,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:15,444 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:15,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:47:15,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:15,661 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-03 04:47:15,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:15,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954007045] [2021-11-03 04:47:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:15,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:15,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:15,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:47:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:16,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:16,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:16,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:16,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:16,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954007045] [2021-11-03 04:47:16,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954007045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:16,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:16,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:47:16,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901180366] [2021-11-03 04:47:16,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:47:16,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:47:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:47:16,736 INFO L87 Difference]: Start difference. First operand 267 states and 314 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 04:47:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:16,832 INFO L93 Difference]: Finished difference Result 492 states and 585 transitions. [2021-11-03 04:47:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 103 [2021-11-03 04:47:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:16,835 INFO L225 Difference]: With dead ends: 492 [2021-11-03 04:47:16,835 INFO L226 Difference]: Without dead ends: 270 [2021-11-03 04:47:16,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 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 04:47:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-03 04:47:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-03 04:47:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.2007575757575757) internal successors, (317), 269 states have internal predecessors, (317), 0 states have call successors, (0), 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 04:47:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 317 transitions. [2021-11-03 04:47:16,849 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 317 transitions. Word has length 103 [2021-11-03 04:47:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:16,849 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 317 transitions. [2021-11-03 04:47:16,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 04:47:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 317 transitions. [2021-11-03 04:47:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 04:47:16,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:16,852 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:16,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:17,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:17,071 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -786182228, now seen corresponding path program 1 times [2021-11-03 04:47:17,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:17,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957614226] [2021-11-03 04:47:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:17,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:17,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:17,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:47:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:17,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:47:17,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:17,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:18,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:18,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957614226] [2021-11-03 04:47:18,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957614226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:18,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537418554] [2021-11-03 04:47:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:18,312 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:18,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:47:18,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:47:18,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:47:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:18,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:47:18,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:47:19,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:47:19,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537418554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:19,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:47:19,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-03 04:47:19,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015242246] [2021-11-03 04:47:19,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:47:19,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:19,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:47:19,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:47:19,904 INFO L87 Difference]: Start difference. First operand 270 states and 317 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 04:47:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:24,132 INFO L93 Difference]: Finished difference Result 444 states and 523 transitions. [2021-11-03 04:47:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 106 [2021-11-03 04:47:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:24,135 INFO L225 Difference]: With dead ends: 444 [2021-11-03 04:47:24,135 INFO L226 Difference]: Without dead ends: 219 [2021-11-03 04:47:24,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:47:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-03 04:47:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-03 04:47:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.187793427230047) internal successors, (253), 218 states have internal predecessors, (253), 0 states have call successors, (0), 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 04:47:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2021-11-03 04:47:24,146 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 106 [2021-11-03 04:47:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:24,147 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2021-11-03 04:47:24,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 04:47:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2021-11-03 04:47:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 04:47:24,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:24,154 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:24,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:24,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:24,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:24,570 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash 530495470, now seen corresponding path program 1 times [2021-11-03 04:47:24,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:24,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497204141] [2021-11-03 04:47:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:24,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:24,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:24,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:47:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:47:25,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:25,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:25,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:25,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497204141] [2021-11-03 04:47:25,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497204141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:25,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1396601473] [2021-11-03 04:47:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:25,904 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:47:25,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:47:25,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 04:47:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:26,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:47:26,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:27,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:47:27,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1396601473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:27,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155568371] [2021-11-03 04:47:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:27,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:47:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:47:27,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:47:27,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 04:47:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:28,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:47:28,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:47:28,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:47:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155568371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:28,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:47:28,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 04:47:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110658744] [2021-11-03 04:47:28,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:47:28,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:47:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:47:28,695 INFO L87 Difference]: Start difference. First operand 219 states and 253 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 04:47:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:28,958 INFO L93 Difference]: Finished difference Result 396 states and 467 transitions. [2021-11-03 04:47:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:47:28,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 113 [2021-11-03 04:47:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:28,963 INFO L225 Difference]: With dead ends: 396 [2021-11-03 04:47:28,963 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 04:47:28,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:47:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 04:47:28,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 04:47:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 221 states have (on average 1.1809954751131222) internal successors, (261), 226 states have internal predecessors, (261), 0 states have call successors, (0), 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 04:47:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2021-11-03 04:47:28,975 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 113 [2021-11-03 04:47:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:28,975 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2021-11-03 04:47:28,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 04:47:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2021-11-03 04:47:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 04:47:28,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:28,977 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:29,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:29,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:29,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:29,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:29,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1097325138, now seen corresponding path program 2 times [2021-11-03 04:47:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:29,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915555671] [2021-11-03 04:47:29,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:47:29,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:29,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:29,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:47:30,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:47:30,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:47:30,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:47:30,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:47:30,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:47:31,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:31,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915555671] [2021-11-03 04:47:31,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915555671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:31,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [930676280] [2021-11-03 04:47:31,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:47:31,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:31,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:47:31,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:47:31,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 04:47:33,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:47:33,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:47:33,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:47:33,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:47:33,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:47:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [930676280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:33,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545473944] [2021-11-03 04:47:33,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:47:33,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:47:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:47:33,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:47:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 04:47:34,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:47:34,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:47:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:47:34,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 04:47:35,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 04:47:35,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545473944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:35,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:47:35,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-03 04:47:35,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485624272] [2021-11-03 04:47:35,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 04:47:35,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 04:47:35,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:47:35,908 INFO L87 Difference]: Start difference. First operand 227 states and 261 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 04:47:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:39,710 INFO L93 Difference]: Finished difference Result 583 states and 695 transitions. [2021-11-03 04:47:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:47:39,713 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 121 [2021-11-03 04:47:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:39,715 INFO L225 Difference]: With dead ends: 583 [2021-11-03 04:47:39,715 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 04:47:39,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:47:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 04:47:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2021-11-03 04:47:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 243 states have (on average 1.168724279835391) internal successors, (284), 248 states have internal predecessors, (284), 0 states have call successors, (0), 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 04:47:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-11-03 04:47:39,734 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 121 [2021-11-03 04:47:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:39,734 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-11-03 04:47:39,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 04:47:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-11-03 04:47:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 04:47:39,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:39,737 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:39,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:39,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:40,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:40,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:40,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:47:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1558699730, now seen corresponding path program 3 times [2021-11-03 04:47:40,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:40,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279940331] [2021-11-03 04:47:40,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:47:40,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:40,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:40,362 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:40,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:47:44,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 04:47:44,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:47:44,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:47:44,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 04:47:45,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 04:47:46,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:46,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279940331] [2021-11-03 04:47:46,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279940331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:47:46,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797853151] [2021-11-03 04:47:46,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:47:46,647 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:47:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:47:46,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:47:46,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 04:48:29,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 04:48:29,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:48:29,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:48:29,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:48:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 04:48:30,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:48:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 04:48:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1797853151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:48:33,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153656914] [2021-11-03 04:48:33,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:48:33,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:48:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:48:33,121 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:48:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01621d8c-f046-49ee-95db-75f05af754b4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process