./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/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_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/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_cdb45cf3-b717-40e0-b655-302342ed83b1/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:41,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:41,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:41,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:41,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:41,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:41,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:41,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:41,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:41,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:41,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:41,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:41,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:41,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:41,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:41,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:41,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:41,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:41,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:41,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:41,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:41,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:41,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:41,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:41,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:41,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:41,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:41,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:41,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:41,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:41,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:41,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:41,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:41,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:41,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:41,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:41,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:41,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:41,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:41,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:41,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:41,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:40:41,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:41,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:41,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:41,301 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:41,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:41,301 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:41,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:41,302 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:41,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:41,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:41,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:41,310 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:41,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:41,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:41,310 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:41,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:41,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:41,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:41,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:41,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:41,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:41,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:41,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:41,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:41,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:41,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:41,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:41,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:41,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:41,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:41,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:41,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:41,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:41,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:41,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:41,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:41,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:41,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:41,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:41,318 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_cdb45cf3-b717-40e0-b655-302342ed83b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-03 03:40:41,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:41,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:41,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:41,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:41,592 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:41,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-03 03:40:41,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/69ef31c9b/1040f7210165446e86c17d595dfdf27c/FLAGb903f96dd [2021-11-03 03:40:42,331 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:42,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-03 03:40:42,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/69ef31c9b/1040f7210165446e86c17d595dfdf27c/FLAGb903f96dd [2021-11-03 03:40:42,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/69ef31c9b/1040f7210165446e86c17d595dfdf27c [2021-11-03 03:40:42,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:42,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:42,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:42,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:42,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:42,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:42" (1/1) ... [2021-11-03 03:40:42,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fd2cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:42, skipping insertion in model container [2021-11-03 03:40:42,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:42" (1/1) ... [2021-11-03 03:40:42,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:42,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:43,081 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-03 03:40:43,233 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-03 03:40:43,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:43,257 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 03:40:43,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77f3866a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:43, skipping insertion in model container [2021-11-03 03:40:43,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:43,258 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:40:43,260 INFO L168 Benchmark]: Toolchain (without parser) took 735.44 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.7 MB in the beginning and 85.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:43,261 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:43,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.72 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.4 MB in the beginning and 85.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:43,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 731.72 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.4 MB in the beginning and 85.1 MB in the end (delta: -22.7 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_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/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_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/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_cdb45cf3-b717-40e0-b655-302342ed83b1/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:45,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:45,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:45,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:45,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:45,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:45,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:45,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:45,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:45,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:45,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:45,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:45,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:45,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:45,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:45,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:45,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:45,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:45,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:45,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:45,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:45,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:45,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:45,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:45,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:45,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:45,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:45,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:45,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:45,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:45,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:45,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:45,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:45,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:45,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:45,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:45,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:45,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:45,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:45,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:45,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:45,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:40:45,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:45,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:45,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:45,765 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:45,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:45,766 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:45,766 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:45,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:45,766 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:45,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:45,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:45,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:45,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:45,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:45,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:45,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:45,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:45,769 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:40:45,769 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:40:45,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:45,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:45,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:45,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:45,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:45,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:40:45,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:45,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:45,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:45,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:45,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:45,775 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:40:45,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:45,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:45,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:45,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:45,776 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_cdb45cf3-b717-40e0-b655-302342ed83b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-03 03:40:46,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:46,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:46,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:46,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:46,190 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:46,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-03 03:40:46,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/2bb517d10/12095393d5ad4f6f95271c1b425c37ba/FLAG6e4b70186 [2021-11-03 03:40:46,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:46,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-03 03:40:47,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/2bb517d10/12095393d5ad4f6f95271c1b425c37ba/FLAG6e4b70186 [2021-11-03 03:40:47,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/data/2bb517d10/12095393d5ad4f6f95271c1b425c37ba [2021-11-03 03:40:47,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:47,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:47,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:47,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:47,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:47,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:47" (1/1) ... [2021-11-03 03:40:47,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c872a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:47, skipping insertion in model container [2021-11-03 03:40:47,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:47" (1/1) ... [2021-11-03 03:40:47,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:47,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:47,924 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-03 03:40:48,057 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-03 03:40:48,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:48,101 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:40:48,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:48,150 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-03 03:40:48,266 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-03 03:40:48,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:48,308 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:48,370 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-03 03:40:48,491 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_cdb45cf3-b717-40e0-b655-302342ed83b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-03 03:40:48,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:48,591 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:48,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48 WrapperNode [2021-11-03 03:40:48,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:48,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:48,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:48,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:48,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:48,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:48,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:48,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:48,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:48,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:48,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:48,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:48,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (1/1) ... [2021-11-03 03:40:48,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:48,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:48,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:48,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:40:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:40:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:40:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:40:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:40:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:40:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:40:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:40:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:40:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:55,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:55,904 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 03:40:55,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:55 BoogieIcfgContainer [2021-11-03 03:40:55,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:55,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:55,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:55,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:55,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:47" (1/3) ... [2021-11-03 03:40:55,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9fa4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:55, skipping insertion in model container [2021-11-03 03:40:55,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:48" (2/3) ... [2021-11-03 03:40:55,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9fa4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:55, skipping insertion in model container [2021-11-03 03:40:55,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:55" (3/3) ... [2021-11-03 03:40:55,920 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-03 03:40:55,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:55,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:40:55,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:55,992 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 03:40:55,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:40:56,014 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 03:40:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:40:56,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:56,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:56,021 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 03:40:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-03 03:40:56,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:56,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944122111] [2021-11-03 03:40:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:56,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:56,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:56,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:40:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:56,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:40:56,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:56,282 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 03:40:56,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:56,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:56,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944122111] [2021-11-03 03:40:56,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944122111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:56,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:56,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:40:56,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491598230] [2021-11-03 03:40:56,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:40:56,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:40:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:40:56,335 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 03:40:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:56,376 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-03 03:40:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:40:56,378 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 03:40:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:56,405 INFO L225 Difference]: With dead ends: 410 [2021-11-03 03:40:56,406 INFO L226 Difference]: Without dead ends: 173 [2021-11-03 03:40:56,409 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 03:40:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-03 03:40:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-03 03:40:56,449 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 03:40:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-03 03:40:56,454 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-03 03:40:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:56,455 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-03 03:40:56,455 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 03:40:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-03 03:40:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:56,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:56,458 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 03:40:56,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:56,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:56,673 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 03:40:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-03 03:40:56,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:56,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506730432] [2021-11-03 03:40:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:56,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:56,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:56,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:40:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:56,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:56,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:57,056 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 03:40:57,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:57,214 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 03:40:57,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:57,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506730432] [2021-11-03 03:40:57,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506730432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:57,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:57,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:57,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949970171] [2021-11-03 03:40:57,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:57,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:57,225 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 03:40:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:57,397 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2021-11-03 03:40:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:57,398 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 03:40:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:57,399 INFO L225 Difference]: With dead ends: 264 [2021-11-03 03:40:57,399 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 03:40:57,401 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 03:40:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 03:40:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-03 03:40:57,412 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 03:40:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2021-11-03 03:40:57,415 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 44 [2021-11-03 03:40:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:57,415 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2021-11-03 03:40:57,415 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 03:40:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2021-11-03 03:40:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:57,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:57,417 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 03:40:57,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:57,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:57,638 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 03:40:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash -317554283, now seen corresponding path program 1 times [2021-11-03 03:40:57,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:57,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528303432] [2021-11-03 03:40:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:57,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:57,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:40:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:40:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:58,104 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 03:40:58,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:58,712 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 03:40:58,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:58,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528303432] [2021-11-03 03:40:58,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528303432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:58,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:58,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 03:40:58,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822613371] [2021-11-03 03:40:58,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:40:58,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:40:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:58,715 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 03:40:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:58,858 INFO L93 Difference]: Finished difference Result 260 states and 320 transitions. [2021-11-03 03:40:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:58,860 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 03:40:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:58,866 INFO L225 Difference]: With dead ends: 260 [2021-11-03 03:40:58,866 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 03:40:58,868 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 03:40:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 03:40:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-03 03:40:58,886 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 03:40:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-03 03:40:58,888 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 44 [2021-11-03 03:40:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:58,888 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-03 03:40:58,888 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 03:40:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-03 03:40:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:58,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:58,891 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 03:40:58,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:59,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:59,099 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 03:40:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash -575719721, now seen corresponding path program 1 times [2021-11-03 03:40:59,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:59,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115647416] [2021-11-03 03:40:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:59,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:59,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:59,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:59,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:40:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:59,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:59,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:59,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:59,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:59,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:59,529 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:40:59,530 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 03:40:59,608 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:40:59,608 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 03:40:59,727 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 03:40:59,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:59,910 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 03:40:59,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:59,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115647416] [2021-11-03 03:40:59,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115647416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:59,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:59,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:59,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376500243] [2021-11-03 03:40:59,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:59,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:59,915 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 03:41:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:05,072 INFO L93 Difference]: Finished difference Result 447 states and 536 transitions. [2021-11-03 03:41:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:41:05,073 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 03:41:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:05,076 INFO L225 Difference]: With dead ends: 447 [2021-11-03 03:41:05,076 INFO L226 Difference]: Without dead ends: 367 [2021-11-03 03:41:05,076 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 03:41:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-03 03:41:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 172. [2021-11-03 03:41:05,093 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 03:41:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-03 03:41:05,095 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 44 [2021-11-03 03:41:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:05,095 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-03 03:41:05,096 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 03:41:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-03 03:41:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:41:05,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:05,100 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 03:41:05,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:05,313 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 03:41:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1988408325, now seen corresponding path program 1 times [2021-11-03 03:41:05,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:05,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744649905] [2021-11-03 03:41:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:05,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:05,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:05,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:05,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:41:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:05,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:05,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:06,003 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 03:41:06,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:06,299 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 03:41:06,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:06,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744649905] [2021-11-03 03:41:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744649905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:06,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:06,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:41:06,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251485637] [2021-11-03 03:41:06,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:41:06,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:41:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:41:06,302 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 03:41:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:06,417 INFO L93 Difference]: Finished difference Result 349 states and 432 transitions. [2021-11-03 03:41:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:06,420 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 03:41:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:06,421 INFO L225 Difference]: With dead ends: 349 [2021-11-03 03:41:06,422 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 03:41:06,426 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 03:41:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 03:41:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-03 03:41:06,454 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 03:41:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-11-03 03:41:06,456 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 96 [2021-11-03 03:41:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:06,456 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-11-03 03:41:06,457 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 03:41:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-11-03 03:41:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:41:06,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:06,461 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 03:41:06,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:06,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:06,662 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 03:41:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-03 03:41:06,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:06,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630807263] [2021-11-03 03:41:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:06,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:06,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:06,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:41:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:07,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:07,534 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 03:41:07,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:08,031 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 03:41:08,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:08,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630807263] [2021-11-03 03:41:08,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630807263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:08,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:08,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:41:08,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294796816] [2021-11-03 03:41:08,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:41:08,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:41:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:41:08,034 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 03:41:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:08,363 INFO L93 Difference]: Finished difference Result 450 states and 525 transitions. [2021-11-03 03:41:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:41:08,363 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 03:41:08,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:08,365 INFO L225 Difference]: With dead ends: 450 [2021-11-03 03:41:08,366 INFO L226 Difference]: Without dead ends: 279 [2021-11-03 03:41:08,366 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 03:41:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-03 03:41:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2021-11-03 03:41:08,377 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 03:41:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 314 transitions. [2021-11-03 03:41:08,379 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 314 transitions. Word has length 96 [2021-11-03 03:41:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:08,379 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 314 transitions. [2021-11-03 03:41:08,379 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 03:41:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 314 transitions. [2021-11-03 03:41:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:41:08,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:08,383 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 03:41:08,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 03:41:08,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:08,599 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 03:41:08,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-03 03:41:08,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:08,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608514874] [2021-11-03 03:41:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:08,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:08,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:08,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:41:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:09,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:09,446 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 03:41:09,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:09,711 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 03:41:09,711 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:09,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608514874] [2021-11-03 03:41:09,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608514874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:09,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:41:09,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:41:09,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052264296] [2021-11-03 03:41:09,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:09,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:09,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:09,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:41:09,714 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 03:41:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:09,783 INFO L93 Difference]: Finished difference Result 492 states and 585 transitions. [2021-11-03 03:41:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:09,784 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 03:41:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:09,787 INFO L225 Difference]: With dead ends: 492 [2021-11-03 03:41:09,787 INFO L226 Difference]: Without dead ends: 270 [2021-11-03 03:41:09,788 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 03:41:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-03 03:41:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-03 03:41:09,799 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 03:41:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 317 transitions. [2021-11-03 03:41:09,805 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 317 transitions. Word has length 103 [2021-11-03 03:41:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:09,807 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 317 transitions. [2021-11-03 03:41:09,807 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 03:41:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 317 transitions. [2021-11-03 03:41:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:41:09,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:09,810 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 03:41:09,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:10,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:10,028 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 03:41:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash -786182228, now seen corresponding path program 1 times [2021-11-03 03:41:10,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:10,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657724173] [2021-11-03 03:41:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:10,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:10,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:10,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:41:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:41:10,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:10,873 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 03:41:10,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:11,197 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 03:41:11,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:11,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657724173] [2021-11-03 03:41:11,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657724173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:11,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [171089824] [2021-11-03 03:41:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:11,198 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:11,200 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:11,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 03:41:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:11,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:12,306 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 03:41:12,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:12,717 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 03:41:12,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [171089824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:12,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:41:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-03 03:41:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119418320] [2021-11-03 03:41:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:41:12,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:41:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:41:12,720 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 03:41:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:16,072 INFO L93 Difference]: Finished difference Result 444 states and 523 transitions. [2021-11-03 03:41:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:41:16,074 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 03:41:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:16,075 INFO L225 Difference]: With dead ends: 444 [2021-11-03 03:41:16,076 INFO L226 Difference]: Without dead ends: 219 [2021-11-03 03:41:16,076 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 03:41:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-03 03:41:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-03 03:41:16,085 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 03:41:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2021-11-03 03:41:16,086 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 106 [2021-11-03 03:41:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:16,087 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2021-11-03 03:41:16,087 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 03:41:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2021-11-03 03:41:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:41:16,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:16,089 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 03:41:16,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-03 03:41:16,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:16,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:41:16,511 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 03:41:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 530495470, now seen corresponding path program 1 times [2021-11-03 03:41:16,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:16,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555792355] [2021-11-03 03:41:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:16,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:16,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:16,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:16,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:41:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:17,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:41:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:17,627 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 03:41:17,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:17,961 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 03:41:17,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:17,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555792355] [2021-11-03 03:41:17,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555792355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:17,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [491400970] [2021-11-03 03:41:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:17,962 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:17,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:17,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:18,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 03:41:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:18,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:41:18,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:19,209 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 03:41:19,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:19,471 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 03:41:19,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [491400970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:19,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464406452] [2021-11-03 03:41:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:19,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:19,473 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:19,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 03:41:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:20,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:41:20,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:20,549 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 03:41:20,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:20,801 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 03:41:20,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464406452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:20,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:41:20,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 03:41:20,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010542705] [2021-11-03 03:41:20,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:41:20,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:20,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:41:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:41:20,804 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 03:41:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:21,073 INFO L93 Difference]: Finished difference Result 396 states and 467 transitions. [2021-11-03 03:41:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:41:21,077 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 03:41:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:21,079 INFO L225 Difference]: With dead ends: 396 [2021-11-03 03:41:21,079 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 03:41:21,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:41:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 03:41:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 03:41:21,089 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 03:41:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2021-11-03 03:41:21,090 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 113 [2021-11-03 03:41:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:21,091 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2021-11-03 03:41:21,091 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 03:41:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2021-11-03 03:41:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 03:41:21,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:21,093 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 03:41:21,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:21,708 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 03:41:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1097325138, now seen corresponding path program 2 times [2021-11-03 03:41:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:21,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267797296] [2021-11-03 03:41:21,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:41:21,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:21,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:21,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:41:22,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:41:22,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:22,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:41:22,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:22,983 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 03:41:22,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:23,574 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 03:41:23,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:23,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267797296] [2021-11-03 03:41:23,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267797296] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:23,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [726451142] [2021-11-03 03:41:23,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:41:23,575 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:23,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:23,575 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:23,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 03:41:25,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:41:25,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:25,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:41:25,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:25,396 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 03:41:25,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:25,686 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 03:41:25,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [726451142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:25,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510152473] [2021-11-03 03:41:25,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:41:25,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:25,688 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:25,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 03:41:26,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:41:26,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:26,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:41:26,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:27,354 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 03:41:27,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:28,151 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 03:41:28,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510152473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:28,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:41:28,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-03 03:41:28,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733239921] [2021-11-03 03:41:28,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 03:41:28,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 03:41:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:41:28,154 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 03:41:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:31,897 INFO L93 Difference]: Finished difference Result 583 states and 695 transitions. [2021-11-03 03:41:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:41:31,899 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 03:41:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:31,902 INFO L225 Difference]: With dead ends: 583 [2021-11-03 03:41:31,902 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 03:41:31,903 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 03:41:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 03:41:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2021-11-03 03:41:31,921 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 03:41:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-11-03 03:41:31,923 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 121 [2021-11-03 03:41:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:31,923 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-11-03 03:41:31,923 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 03:41:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-11-03 03:41:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 03:41:31,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:31,930 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 03:41:31,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:32,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:32,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:32,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:32,549 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 03:41:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1558699730, now seen corresponding path program 3 times [2021-11-03 03:41:32,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:32,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099771335] [2021-11-03 03:41:32,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:41:32,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:32,552 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:32,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:41:36,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:41:36,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:36,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 03:41:36,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:37,402 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 03:41:37,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:38,844 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 03:41:38,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:38,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099771335] [2021-11-03 03:41:38,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099771335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:38,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106361523] [2021-11-03 03:41:38,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:41:38,846 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:38,847 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:38,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 03:42:19,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:42:19,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:42:19,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:42:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:19,899 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 03:42:19,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:22,607 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 03:42:22,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [106361523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:42:22,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928890011] [2021-11-03 03:42:22,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:42:22,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:42:22,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:22,609 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:42:22,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb45cf3-b717-40e0-b655-302342ed83b1/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process