./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb07a385d9ee58b3b4f70410fbd2936e86f27502 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb07a385d9ee58b3b4f70410fbd2936e86f27502 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:01:25,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:01:25,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:01:25,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:01:25,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:01:25,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:01:25,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:01:25,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:01:25,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:01:25,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:01:25,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:01:25,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:01:25,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:01:25,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:01:25,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:01:25,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:01:25,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:01:25,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:01:25,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:01:25,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:01:25,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:01:25,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:01:25,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:01:25,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:01:25,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:01:25,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:01:25,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:01:25,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:01:25,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:01:25,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:01:25,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:01:25,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:01:25,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:01:25,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:01:25,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:01:25,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:01:25,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:01:25,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:01:25,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:01:25,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:01:25,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:01:25,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 03:01:25,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:01:25,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:01:25,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:01:25,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:01:25,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:01:25,235 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:01:25,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:01:25,236 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:01:25,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:01:25,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:01:25,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:01:25,238 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:01:25,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:01:25,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:01:25,239 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:01:25,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 03:01:25,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 03:01:25,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:01:25,241 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:01:25,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:01:25,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:01:25,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:01:25,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:01:25,242 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 03:01:25,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 03:01:25,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 03:01:25,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:01:25,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:01:25,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:01:25,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:01:25,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:01:25,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:01:25,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:01:25,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:01:25,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:01:25,248 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:01:25,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:01:25,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:01:25,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:01:25,249 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07a385d9ee58b3b4f70410fbd2936e86f27502 [2021-10-16 03:01:25,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:01:25,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:01:25,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:01:25,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:01:25,626 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:01:25,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2021-10-16 03:01:25,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/a937dbe7b/cdedb6658685459ab72269b9232e40bd/FLAGecde9d653 [2021-10-16 03:01:26,413 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:01:26,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2021-10-16 03:01:26,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/a937dbe7b/cdedb6658685459ab72269b9232e40bd/FLAGecde9d653 [2021-10-16 03:01:26,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/a937dbe7b/cdedb6658685459ab72269b9232e40bd [2021-10-16 03:01:26,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:01:26,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:01:26,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:01:26,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:01:26,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:01:26,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:01:26" (1/1) ... [2021-10-16 03:01:26,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae621a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:26, skipping insertion in model container [2021-10-16 03:01:26,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:01:26" (1/1) ... [2021-10-16 03:01:26,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:01:26,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:01:27,205 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i[24165,24178] [2021-10-16 03:01:27,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:01:27,221 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:01:27,270 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i[24165,24178] [2021-10-16 03:01:27,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:01:27,318 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:01:27,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27 WrapperNode [2021-10-16 03:01:27,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:01:27,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:01:27,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:01:27,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:01:27,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:01:27,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:01:27,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:01:27,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:01:27,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:01:27,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:01:27,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:01:27,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:01:27,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (1/1) ... [2021-10-16 03:01:27,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:01:27,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:01:27,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:01:27,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:01:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:01:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:01:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:01:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:01:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:01:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:01:28,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:01:28,319 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-16 03:01:28,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:01:28 BoogieIcfgContainer [2021-10-16 03:01:28,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:01:28,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:01:28,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:01:28,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:01:28,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:01:26" (1/3) ... [2021-10-16 03:01:28,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1d5e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:01:28, skipping insertion in model container [2021-10-16 03:01:28,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:27" (2/3) ... [2021-10-16 03:01:28,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1d5e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:01:28, skipping insertion in model container [2021-10-16 03:01:28,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:01:28" (3/3) ... [2021-10-16 03:01:28,332 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2021-10-16 03:01:28,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:01:28,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-10-16 03:01:28,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:01:28,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:01:28,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-16 03:01:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:01:28,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:28,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:01:28,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash 5642482, now seen corresponding path program 1 times [2021-10-16 03:01:28,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:28,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434272721] [2021-10-16 03:01:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:28,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:28,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:28,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434272721] [2021-10-16 03:01:28,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434272721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:28,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:28,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:01:28,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18766245] [2021-10-16 03:01:28,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:01:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:01:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:01:28,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:28,692 INFO L87 Difference]: Start difference. First operand has 67 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:28,731 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-10-16 03:01:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:01:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-10-16 03:01:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:28,744 INFO L225 Difference]: With dead ends: 79 [2021-10-16 03:01:28,745 INFO L226 Difference]: Without dead ends: 75 [2021-10-16 03:01:28,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-16 03:01:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-10-16 03:01:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 30 states have (on average 2.3) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-16 03:01:28,881 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 4 [2021-10-16 03:01:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-16 03:01:28,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-16 03:01:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:01:28,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:28,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:01:28,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:01:28,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash 5491669, now seen corresponding path program 1 times [2021-10-16 03:01:28,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:28,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581344315] [2021-10-16 03:01:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:28,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:28,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:28,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581344315] [2021-10-16 03:01:28,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581344315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:28,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:28,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:01:28,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588999032] [2021-10-16 03:01:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:01:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:01:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:01:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:28,956 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:29,047 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-10-16 03:01:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:01:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-10-16 03:01:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:29,050 INFO L225 Difference]: With dead ends: 71 [2021-10-16 03:01:29,050 INFO L226 Difference]: Without dead ends: 71 [2021-10-16 03:01:29,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-16 03:01:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2021-10-16 03:01:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-10-16 03:01:29,059 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 4 [2021-10-16 03:01:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:29,060 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-10-16 03:01:29,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-10-16 03:01:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:01:29,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:29,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:01:29,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:01:29,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:29,062 INFO L82 PathProgramCache]: Analyzing trace with hash 5491670, now seen corresponding path program 1 times [2021-10-16 03:01:29,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:29,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615772345] [2021-10-16 03:01:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:29,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:29,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:29,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615772345] [2021-10-16 03:01:29,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615772345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:29,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:29,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:01:29,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18998627] [2021-10-16 03:01:29,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:01:29,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:01:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:01:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:29,142 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:29,258 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-10-16 03:01:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:01:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-10-16 03:01:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:29,262 INFO L225 Difference]: With dead ends: 57 [2021-10-16 03:01:29,262 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 03:01:29,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 03:01:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-16 03:01:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 2.033333333333333) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-10-16 03:01:29,275 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 4 [2021-10-16 03:01:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-10-16 03:01:29,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-10-16 03:01:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:01:29,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:29,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:01:29,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:01:29,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash 982530640, now seen corresponding path program 1 times [2021-10-16 03:01:29,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:29,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396976229] [2021-10-16 03:01:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:29,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:29,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:29,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396976229] [2021-10-16 03:01:29,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396976229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:29,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:29,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:01:29,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121514435] [2021-10-16 03:01:29,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:29,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:01:29,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:29,399 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:29,562 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-10-16 03:01:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:01:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:29,564 INFO L225 Difference]: With dead ends: 69 [2021-10-16 03:01:29,565 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 03:01:29,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:01:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 03:01:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2021-10-16 03:01:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 30 states have (on average 2.0) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-10-16 03:01:29,572 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 6 [2021-10-16 03:01:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:29,572 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-10-16 03:01:29,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-10-16 03:01:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:01:29,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:29,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:01:29,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:01:29,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:29,575 INFO L82 PathProgramCache]: Analyzing trace with hash 982530641, now seen corresponding path program 1 times [2021-10-16 03:01:29,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:29,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674508683] [2021-10-16 03:01:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:29,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:29,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:29,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674508683] [2021-10-16 03:01:29,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674508683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:29,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:01:29,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835124222] [2021-10-16 03:01:29,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:29,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:01:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:29,728 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:29,827 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-10-16 03:01:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:01:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:29,829 INFO L225 Difference]: With dead ends: 58 [2021-10-16 03:01:29,829 INFO L226 Difference]: Without dead ends: 58 [2021-10-16 03:01:29,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:01:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-16 03:01:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-10-16 03:01:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-16 03:01:29,849 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 6 [2021-10-16 03:01:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:29,850 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-16 03:01:29,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-16 03:01:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:01:29,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:29,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:29,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:01:29,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1123494935, now seen corresponding path program 1 times [2021-10-16 03:01:29,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:01:29,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288617709] [2021-10-16 03:01:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:29,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:01:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:29,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:01:29,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288617709] [2021-10-16 03:01:29,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288617709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:01:29,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514416343] [2021-10-16 03:01:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:29,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:01:29,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:01:30,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:01:30,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:01:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:30,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:01:30,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:30,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:30,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514416343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:30,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [457431725] [2021-10-16 03:01:30,390 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 03:01:30,390 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:01:30,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:01:30,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:01:30,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:01:30,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:01:30,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:01:30,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:01:30,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:01:30,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-16 03:01:30,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:01:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:01:30,601 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 03:01:30,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 03:01:30,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:01:30,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:01:30,612 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:01:30,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:01:30,655 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:01:30,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-16 03:01:30,664 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:01:30,665 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:134, output treesize:122 [2021-10-16 03:01:30,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:30,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:01:30,880 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_78| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:01:30,884 INFO L168 Benchmark]: Toolchain (without parser) took 4224.42 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 73.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:30,885 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:01:30,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.91 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 84.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:30,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.11 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 82.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:30,887 INFO L168 Benchmark]: Boogie Preprocessor took 77.92 ms. Allocated memory is still 113.2 MB. Free memory was 82.4 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:30,887 INFO L168 Benchmark]: RCFGBuilder took 833.58 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 57.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:30,888 INFO L168 Benchmark]: TraceAbstraction took 2558.58 ms. Allocated memory is still 113.2 MB. Free memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:01:30,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.91 ms. Allocated memory is still 113.2 MB. Free memory was 77.8 MB in the beginning and 84.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.11 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 82.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.92 ms. Allocated memory is still 113.2 MB. Free memory was 82.4 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 833.58 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 57.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2558.58 ms. Allocated memory is still 113.2 MB. Free memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_78| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_78|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:01:30,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:01:33,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:01:33,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:01:33,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:01:33,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:01:33,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:01:33,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:01:33,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:01:33,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:01:33,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:01:33,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:01:33,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:01:33,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:01:33,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:01:33,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:01:33,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:01:33,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:01:33,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:01:33,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:01:33,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:01:33,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:01:33,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:01:33,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:01:33,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:01:33,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:01:33,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:01:33,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:01:33,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:01:33,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:01:33,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:01:33,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:01:33,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:01:33,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:01:33,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:01:33,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:01:33,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:01:33,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:01:33,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:01:33,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:01:33,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:01:34,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:01:34,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 03:01:34,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:01:34,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:01:34,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:01:34,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:01:34,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:01:34,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:01:34,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:01:34,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:01:34,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:01:34,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 03:01:34,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 03:01:34,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:01:34,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:01:34,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:01:34,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:01:34,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:01:34,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:01:34,044 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 03:01:34,045 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 03:01:34,045 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 03:01:34,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:01:34,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:01:34,049 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:01:34,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:01:34,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:01:34,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:01:34,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:01:34,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:01:34,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:01:34,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:01:34,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:01:34,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:01:34,054 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:01:34,055 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:01:34,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:01:34,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:01:34,056 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07a385d9ee58b3b4f70410fbd2936e86f27502 [2021-10-16 03:01:34,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:01:34,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:01:34,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:01:34,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:01:34,639 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:01:34,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2021-10-16 03:01:34,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/2409a68b3/66ecb724a98b408a8912f78fed53b903/FLAG0171accc2 [2021-10-16 03:01:35,519 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:01:35,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2021-10-16 03:01:35,546 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/2409a68b3/66ecb724a98b408a8912f78fed53b903/FLAG0171accc2 [2021-10-16 03:01:35,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/data/2409a68b3/66ecb724a98b408a8912f78fed53b903 [2021-10-16 03:01:35,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:01:35,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:01:35,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:01:35,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:01:35,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:01:35,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:01:35" (1/1) ... [2021-10-16 03:01:35,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd11da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:35, skipping insertion in model container [2021-10-16 03:01:35,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:01:35" (1/1) ... [2021-10-16 03:01:35,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:01:35,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:01:36,307 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i[24165,24178] [2021-10-16 03:01:36,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:01:36,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:01:36,431 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_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i[24165,24178] [2021-10-16 03:01:36,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:01:36,495 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:01:36,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36 WrapperNode [2021-10-16 03:01:36,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:01:36,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:01:36,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:01:36,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:01:36,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:01:36,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:01:36,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:01:36,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:01:36,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:01:36,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:01:36,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:01:36,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:01:36,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (1/1) ... [2021-10-16 03:01:36,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:01:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:01:36,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:01:36,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:01:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:01:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:01:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:01:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:01:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:01:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:01:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:01:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 03:01:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:01:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:01:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:01:37,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:01:37,661 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-16 03:01:37,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:01:37 BoogieIcfgContainer [2021-10-16 03:01:37,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:01:37,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:01:37,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:01:37,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:01:37,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:01:35" (1/3) ... [2021-10-16 03:01:37,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c89912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:01:37, skipping insertion in model container [2021-10-16 03:01:37,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:01:36" (2/3) ... [2021-10-16 03:01:37,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c89912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:01:37, skipping insertion in model container [2021-10-16 03:01:37,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:01:37" (3/3) ... [2021-10-16 03:01:37,698 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2021-10-16 03:01:37,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:01:37,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-10-16 03:01:37,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:01:37,795 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:01:37,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-16 03:01:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:01:37,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:37,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:01:37,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2021-10-16 03:01:37,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:37,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276577430] [2021-10-16 03:01:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:37,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:37,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:37,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:01:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:37,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:01:37,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:38,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:38,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:38,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:38,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276577430] [2021-10-16 03:01:38,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276577430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:38,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:38,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:01:38,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868049413] [2021-10-16 03:01:38,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:01:38,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:01:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:38,172 INFO L87 Difference]: Start difference. First operand has 84 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:38,435 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-10-16 03:01:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:01:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:01:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:38,448 INFO L225 Difference]: With dead ends: 95 [2021-10-16 03:01:38,448 INFO L226 Difference]: Without dead ends: 91 [2021-10-16 03:01:38,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:01:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-16 03:01:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-16 03:01:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-10-16 03:01:38,508 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 5 [2021-10-16 03:01:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:38,509 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-10-16 03:01:38,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-10-16 03:01:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:01:38,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:38,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:01:38,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:38,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:38,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2021-10-16 03:01:38,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:38,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841864] [2021-10-16 03:01:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:38,728 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:38,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:01:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:38,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:01:38,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:38,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:38,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:39,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:39,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841864] [2021-10-16 03:01:39,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841864] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:39,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:39,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:01:39,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399080798] [2021-10-16 03:01:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:39,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:39,066 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:39,342 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-10-16 03:01:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:01:39,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:01:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:39,346 INFO L225 Difference]: With dead ends: 75 [2021-10-16 03:01:39,347 INFO L226 Difference]: Without dead ends: 75 [2021-10-16 03:01:39,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-16 03:01:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-10-16 03:01:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-10-16 03:01:39,368 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2021-10-16 03:01:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:39,370 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-10-16 03:01:39,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-10-16 03:01:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:01:39,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:39,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:39,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:39,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:39,584 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:39,585 INFO L82 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2021-10-16 03:01:39,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:39,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766798871] [2021-10-16 03:01:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:39,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:39,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:39,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:01:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:39,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:01:39,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:39,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:39,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:39,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:39,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766798871] [2021-10-16 03:01:39,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766798871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:39,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:39,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 03:01:39,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112727128] [2021-10-16 03:01:39,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:01:39,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:01:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:01:39,890 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-10-16 03:01:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:40,470 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2021-10-16 03:01:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:01:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2021-10-16 03:01:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:40,474 INFO L225 Difference]: With dead ends: 146 [2021-10-16 03:01:40,474 INFO L226 Difference]: Without dead ends: 146 [2021-10-16 03:01:40,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:01:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-16 03:01:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 71. [2021-10-16 03:01:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-16 03:01:40,487 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 9 [2021-10-16 03:01:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:40,488 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-16 03:01:40,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-10-16 03:01:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-16 03:01:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:01:40,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:40,492 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:40,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:40,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:40,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2021-10-16 03:01:40,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:40,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753548592] [2021-10-16 03:01:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:40,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:40,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:40,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:01:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:40,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:01:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:40,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:40,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:41,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:41,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753548592] [2021-10-16 03:01:41,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753548592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:41,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:41,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 03:01:41,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869796359] [2021-10-16 03:01:41,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:01:41,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:41,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:01:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:01:41,323 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:42,234 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-10-16 03:01:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:01:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:01:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:42,237 INFO L225 Difference]: With dead ends: 135 [2021-10-16 03:01:42,237 INFO L226 Difference]: Without dead ends: 135 [2021-10-16 03:01:42,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 264.6ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:01:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-16 03:01:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 70. [2021-10-16 03:01:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-16 03:01:42,247 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 9 [2021-10-16 03:01:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:42,248 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-16 03:01:42,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-16 03:01:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:01:42,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:42,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:42,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:42,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:42,464 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1442029390, now seen corresponding path program 1 times [2021-10-16 03:01:42,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:42,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804529704] [2021-10-16 03:01:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:42,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:42,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:42,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:01:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:42,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:01:42,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:42,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:42,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:42,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804529704] [2021-10-16 03:01:42,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804529704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:42,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:42,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:01:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033898499] [2021-10-16 03:01:42,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:01:42,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:01:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:42,677 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:42,703 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-10-16 03:01:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:42,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:01:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:42,709 INFO L225 Difference]: With dead ends: 80 [2021-10-16 03:01:42,709 INFO L226 Difference]: Without dead ends: 80 [2021-10-16 03:01:42,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:01:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-16 03:01:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-16 03:01:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-10-16 03:01:42,723 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 11 [2021-10-16 03:01:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:42,724 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-10-16 03:01:42,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-10-16 03:01:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:01:42,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:42,726 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:42,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:42,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:42,927 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:42,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1941472818, now seen corresponding path program 1 times [2021-10-16 03:01:42,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:42,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878584629] [2021-10-16 03:01:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:42,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:42,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:01:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:43,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:01:43,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:43,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:43,295 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 03:01:43,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-16 03:01:43,955 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-16 03:01:43,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 55 [2021-10-16 03:01:44,857 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-16 03:01:44,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-10-16 03:01:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:45,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:48,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:48,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878584629] [2021-10-16 03:01:48,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878584629] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:01:48,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:01:48,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 03:01:48,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001476393] [2021-10-16 03:01:48,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:01:48,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:01:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2021-10-16 03:01:48,307 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:48,798 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2021-10-16 03:01:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:01:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-16 03:01:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:48,800 INFO L225 Difference]: With dead ends: 88 [2021-10-16 03:01:48,800 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 03:01:48,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2488.8ms TimeCoverageRelationStatistics Valid=37, Invalid=72, Unknown=1, NotChecked=0, Total=110 [2021-10-16 03:01:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 03:01:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-10-16 03:01:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-10-16 03:01:48,812 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 29 [2021-10-16 03:01:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:48,812 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-10-16 03:01:48,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-10-16 03:01:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:01:48,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:48,814 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:48,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 03:01:49,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:49,024 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1941472817, now seen corresponding path program 1 times [2021-10-16 03:01:49,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:49,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645209969] [2021-10-16 03:01:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:49,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:49,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:49,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:01:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:01:49,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:49,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:49,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:49,514 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 03:01:49,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-10-16 03:01:49,530 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 03:01:49,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-16 03:01:49,884 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 03:01:49,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-10-16 03:01:50,689 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-16 03:01:50,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 32 [2021-10-16 03:01:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:51,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:55,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:55,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645209969] [2021-10-16 03:01:55,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645209969] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:01:55,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:01:55,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 03:01:55,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564608832] [2021-10-16 03:01:55,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:01:55,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:55,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:01:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=59, Unknown=1, NotChecked=0, Total=90 [2021-10-16 03:01:55,006 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:55,889 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-10-16 03:01:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:01:55,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-16 03:01:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:55,891 INFO L225 Difference]: With dead ends: 72 [2021-10-16 03:01:55,891 INFO L226 Difference]: Without dead ends: 72 [2021-10-16 03:01:55,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2674.8ms TimeCoverageRelationStatistics Valid=36, Invalid=73, Unknown=1, NotChecked=0, Total=110 [2021-10-16 03:01:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-16 03:01:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-16 03:01:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-10-16 03:01:55,898 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 29 [2021-10-16 03:01:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-10-16 03:01:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-10-16 03:01:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 03:01:55,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:55,906 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:55,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:56,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:56,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:56,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:56,123 INFO L82 PathProgramCache]: Analyzing trace with hash -56115186, now seen corresponding path program 1 times [2021-10-16 03:01:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:56,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497208107] [2021-10-16 03:01:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:56,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:56,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:56,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:01:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:56,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:01:56,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:56,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:01:56,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:01:56,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:56,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497208107] [2021-10-16 03:01:56,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497208107] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:56,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:56,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 03:01:56,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948169901] [2021-10-16 03:01:56,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:01:56,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:01:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:01:56,703 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:56,987 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-10-16 03:01:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:01:56,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 30 [2021-10-16 03:01:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:56,988 INFO L225 Difference]: With dead ends: 83 [2021-10-16 03:01:56,989 INFO L226 Difference]: Without dead ends: 83 [2021-10-16 03:01:56,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:01:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-16 03:01:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2021-10-16 03:01:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-16 03:01:56,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 30 [2021-10-16 03:01:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:56,994 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-16 03:01:56,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-16 03:01:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 03:01:56,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:56,996 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:57,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:57,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:57,214 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash -56115185, now seen corresponding path program 1 times [2021-10-16 03:01:57,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:57,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974541592] [2021-10-16 03:01:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:57,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:57,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:01:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:01:57,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:57,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:01:57,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:01:58,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:58,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974541592] [2021-10-16 03:01:58,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974541592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:01:58,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:01:58,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 03:01:58,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167830938] [2021-10-16 03:01:58,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:01:58,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:01:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:01:58,087 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:58,475 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-10-16 03:01:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:01:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 30 [2021-10-16 03:01:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:58,477 INFO L225 Difference]: With dead ends: 70 [2021-10-16 03:01:58,478 INFO L226 Difference]: Without dead ends: 70 [2021-10-16 03:01:58,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 233.1ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:01:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-16 03:01:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-16 03:01:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-16 03:01:58,483 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 30 [2021-10-16 03:01:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:58,484 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-16 03:01:58,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:01:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-16 03:01:58,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:01:58,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:01:58,487 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:01:58,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:58,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:01:58,691 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:01:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:58,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1881667274, now seen corresponding path program 1 times [2021-10-16 03:01:58,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:58,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560186957] [2021-10-16 03:01:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:58,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:58,694 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:01:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:59,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:01:59,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:59,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:01:59,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-16 03:01:59,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-16 03:01:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:01:59,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:59,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-10-16 03:02:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:02:00,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:00,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560186957] [2021-10-16 03:02:00,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560186957] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:00,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:00,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-16 03:02:00,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362909477] [2021-10-16 03:02:00,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 03:02:00,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 03:02:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:02:00,030 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:00,849 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-10-16 03:02:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:02:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 35 [2021-10-16 03:02:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:00,851 INFO L225 Difference]: With dead ends: 81 [2021-10-16 03:02:00,851 INFO L226 Difference]: Without dead ends: 81 [2021-10-16 03:02:00,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 464.0ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:02:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-16 03:02:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2021-10-16 03:02:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.290909090909091) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-10-16 03:02:00,856 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 35 [2021-10-16 03:02:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:00,857 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-16 03:02:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-10-16 03:02:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:02:00,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:00,859 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:00,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:01,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:01,071 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:02:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1881667273, now seen corresponding path program 1 times [2021-10-16 03:02:01,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:01,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184652959] [2021-10-16 03:02:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:01,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:01,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:01,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:01,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:02:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:01,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:02:01,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:01,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:02:01,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:02:01,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-16 03:02:01,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 03:02:01,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-16 03:02:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:02:01,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:02,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-16 03:02:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:02,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:02,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:02:02,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:02,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184652959] [2021-10-16 03:02:02,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184652959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:02,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-16 03:02:02,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810802940] [2021-10-16 03:02:02,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 03:02:02,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 03:02:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:02:02,860 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:04,138 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-16 03:02:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:02:04,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 35 [2021-10-16 03:02:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:04,141 INFO L225 Difference]: With dead ends: 69 [2021-10-16 03:02:04,141 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 03:02:04,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1013.9ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-16 03:02:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 03:02:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-10-16 03:02:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-16 03:02:04,154 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 35 [2021-10-16 03:02:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:04,155 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-16 03:02:04,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-16 03:02:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 03:02:04,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:04,157 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:04,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:04,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:04,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:02:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:04,374 INFO L82 PathProgramCache]: Analyzing trace with hash -101017195, now seen corresponding path program 1 times [2021-10-16 03:02:04,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:04,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879795217] [2021-10-16 03:02:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:04,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:04,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:04,377 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:02:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:04,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 03:02:04,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:05,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:02:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:05,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 03:02:05,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-10-16 03:02:05,777 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-16 03:02:05,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 25 [2021-10-16 03:02:05,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:02:05,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-10-16 03:02:05,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-10-16 03:02:06,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-16 03:02:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:02:06,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:06,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-10-16 03:02:06,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2021-10-16 03:02:06,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-10-16 03:02:07,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:07,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-16 03:02:09,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2021-10-16 03:02:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:02:09,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:09,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879795217] [2021-10-16 03:02:09,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879795217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:09,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:09,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-16 03:02:09,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763850066] [2021-10-16 03:02:09,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 03:02:09,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 03:02:09,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-16 03:02:09,849 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:13,729 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-10-16 03:02:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 03:02:13,730 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 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 37 [2021-10-16 03:02:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:13,731 INFO L225 Difference]: With dead ends: 65 [2021-10-16 03:02:13,731 INFO L226 Difference]: Without dead ends: 65 [2021-10-16 03:02:13,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3474.9ms TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-10-16 03:02:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-16 03:02:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-16 03:02:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-10-16 03:02:13,735 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 37 [2021-10-16 03:02:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-10-16 03:02:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-10-16 03:02:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 03:02:13,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:13,738 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:13,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:13,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:13,952 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:02:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:13,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1368928765, now seen corresponding path program 1 times [2021-10-16 03:02:13,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:13,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306562194] [2021-10-16 03:02:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:13,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:13,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:02:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:14,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 03:02:14,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:14,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:02:14,856 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-16 03:02:14,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 41 [2021-10-16 03:02:15,091 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-10-16 03:02:15,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 44 [2021-10-16 03:02:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:15,322 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-10-16 03:02:15,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 58 [2021-10-16 03:02:16,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:02:16,337 INFO L354 Elim1Store]: treesize reduction 28, result has 44.0 percent of original size [2021-10-16 03:02:16,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 62 [2021-10-16 03:02:16,784 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-16 03:02:16,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 61 [2021-10-16 03:02:16,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:02:16,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2021-10-16 03:02:17,597 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 03:02:17,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 40 [2021-10-16 03:02:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:02:17,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:18,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 100 [2021-10-16 03:02:28,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:28,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-10-16 03:02:30,605 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_arrayElimCell_39 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse4 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_3))) (store .cse4 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse4) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse3 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse3 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select .cse0 (bvadd (_ bv4 32) v_arrayElimCell_39)))))))))))))) (_ bv1 1))) (and (= c_ULTIMATE.start_sll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select .cse0 .cse1))))))))))))))) (_ bv1 1))) (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_sll_prepend_~head.offset)))))) is different from false [2021-10-16 03:02:32,925 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_arrayElimCell_39 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse4 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_3))) (store .cse4 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse4) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse3 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse3 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))))) (or (and (= c_ULTIMATE.start_sll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select .cse0 .cse1)))))))))))))))) (_ bv1 1))) (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_sll_prepend_~head.offset)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select .cse0 (bvadd (_ bv4 32) v_arrayElimCell_39))))))))))))))))))))))) is different from false [2021-10-16 03:02:33,322 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-10-16 03:02:33,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30475 treesize of output 29763 [2021-10-16 03:02:47,086 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 03:02:47,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2021-10-16 03:02:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:02:47,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:47,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306562194] [2021-10-16 03:02:47,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306562194] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:02:47,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:02:47,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 36 [2021-10-16 03:02:47,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705499544] [2021-10-16 03:02:47,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 03:02:47,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 03:02:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1090, Unknown=5, NotChecked=134, Total=1332 [2021-10-16 03:02:47,292 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:16,017 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-10-16 03:03:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-16 03:03:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-16 03:03:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:16,019 INFO L225 Difference]: With dead ends: 101 [2021-10-16 03:03:16,019 INFO L226 Difference]: Without dead ends: 101 [2021-10-16 03:03:16,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 41289.5ms TimeCoverageRelationStatistics Valid=432, Invalid=2118, Unknown=8, NotChecked=198, Total=2756 [2021-10-16 03:03:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-16 03:03:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67. [2021-10-16 03:03:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.263157894736842) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-10-16 03:03:16,023 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 40 [2021-10-16 03:03:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:16,024 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-10-16 03:03:16,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-10-16 03:03:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 03:03:16,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:16,025 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:16,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:16,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:03:16,226 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:03:16,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:16,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1368928766, now seen corresponding path program 1 times [2021-10-16 03:03:16,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:03:16,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641416383] [2021-10-16 03:03:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:16,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:03:16,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:03:16,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:03:16,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:03:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:16,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-16 03:03:16,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:16,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:03:16,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:03:17,487 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:03:17,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-10-16 03:03:17,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-16 03:03:17,768 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:03:17,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 03:03:17,836 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-10-16 03:03:17,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2021-10-16 03:03:18,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:03:18,115 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-10-16 03:03:18,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 31 [2021-10-16 03:03:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:03:18,182 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-10-16 03:03:18,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 50 [2021-10-16 03:03:19,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:03:19,202 INFO L354 Elim1Store]: treesize reduction 28, result has 44.0 percent of original size [2021-10-16 03:03:19,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 54 [2021-10-16 03:03:19,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:03:19,307 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 03:03:19,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 23 [2021-10-16 03:03:19,719 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-16 03:03:19,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 78 [2021-10-16 03:03:19,765 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-10-16 03:03:19,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 80 [2021-10-16 03:03:20,809 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-16 03:03:20,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 57 [2021-10-16 03:03:20,835 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-16 03:03:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2021-10-16 03:03:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:03:21,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:26,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:03:26,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 630 [2021-10-16 03:03:26,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:03:26,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 767 [2021-10-16 03:04:06,474 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse0 (let ((.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse6 (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) .cse4 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_5))) (store .cse6 .cse4 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse6) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse5 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse5 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset))))) (select (select .cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse3 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse4 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_4))) (store .cse3 .cse4 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse3) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse2 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse2 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))) |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (bvadd (_ bv4 32) (select (select .cse1 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))))))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse13 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse7 (let ((.cse14 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse15 (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) .cse13 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_5))) (store .cse15 .cse13 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse15) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse14 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse14 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset)))) (.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse12 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse13 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_4))) (store .cse12 .cse13 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse12) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse11 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse11 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (let ((.cse8 (select (select .cse10 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (.cse9 (bvadd (_ bv4 32) (select (select .cse7 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) (bvule (bvadd (_ bv8 32) (select (select .cse7 .cse8) .cse9)) (select |c_#length| (select (select .cse10 .cse8) .cse9)))))))) is different from false [2021-10-16 03:04:06,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1042 treesize of output 1030 [2021-10-16 03:04:06,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1332 treesize of output 1284 [2021-10-16 03:06:45,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-10-16 03:06:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:06:46,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:46,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641416383] [2021-10-16 03:06:46,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641416383] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:06:46,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:06:46,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 36 [2021-10-16 03:06:46,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853962762] [2021-10-16 03:06:46,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 03:06:46,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 03:06:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1144, Unknown=15, NotChecked=68, Total=1332 [2021-10-16 03:06:46,245 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:21,251 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2021-10-16 03:07:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 03:07:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-16 03:07:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:21,253 INFO L225 Difference]: With dead ends: 113 [2021-10-16 03:07:21,253 INFO L226 Difference]: Without dead ends: 113 [2021-10-16 03:07:21,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 75632.8ms TimeCoverageRelationStatistics Valid=461, Invalid=2387, Unknown=18, NotChecked=104, Total=2970 [2021-10-16 03:07:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-16 03:07:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2021-10-16 03:07:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-10-16 03:07:21,258 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 40 [2021-10-16 03:07:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:21,258 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-10-16 03:07:21,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-10-16 03:07:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-16 03:07:21,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:21,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:07:21,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:07:21,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:07:21,467 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:07:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:21,468 INFO L82 PathProgramCache]: Analyzing trace with hash -512882532, now seen corresponding path program 1 times [2021-10-16 03:07:21,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:07:21,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664744936] [2021-10-16 03:07:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:21,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:07:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:07:21,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:07:21,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:07:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-16 03:07:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:22,575 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-10-16 03:07:22,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 31 [2021-10-16 03:07:22,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:07:22,797 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-10-16 03:07:22,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 32 [2021-10-16 03:07:23,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:07:23,402 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-10-16 03:07:23,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 40 [2021-10-16 03:07:23,680 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-16 03:07:23,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 28 [2021-10-16 03:07:23,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:07:23,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 03:07:24,198 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 03:07:24,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 17 [2021-10-16 03:07:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:07:24,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:24,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2021-10-16 03:07:57,424 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 34 [2021-10-16 03:07:59,486 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (let ((.cse2 (bvadd (_ bv4 32) c_ULTIMATE.start_sll_prepend_~new_head~1.offset))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~new_head~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~new_head~1.base) .cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset))))) (store .cse1 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse1 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_sll_prepend_~new_head~1.base))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) .cse2)) (_ bv0 32))) (or (forall ((v_arrayElimCell_80 (_ BitVec 32))) (not (= (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~new_head~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~new_head~1.base) (bvadd (_ bv4 32) c_ULTIMATE.start_sll_prepend_~new_head~1.offset) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset))))) (store .cse4 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse4 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_sll_prepend_~new_head~1.base))))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (bvadd (_ bv4 32) v_arrayElimCell_80)) (_ bv0 32)))) (and (= c_ULTIMATE.start_sll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|) (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_sll_prepend_~head.offset)))) is different from false [2021-10-16 03:08:01,551 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 32) (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) .cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset))))) (store .cse1 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse1 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset |c_ULTIMATE.start_node_create_#res.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) .cse2)))) (or (and (= c_ULTIMATE.start_sll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|) (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_sll_prepend_~head.offset)) (forall ((v_arrayElimCell_80 (_ BitVec 32))) (not (= (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res.offset|) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset))))) (store .cse4 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse4 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset |c_ULTIMATE.start_node_create_#res.base|))))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (bvadd (_ bv4 32) v_arrayElimCell_80)) (_ bv0 32)))))) is different from false [2021-10-16 03:08:05,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:05,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 269 [2021-10-16 03:08:25,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 95 [2021-10-16 03:08:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:08:26,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:08:26,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664744936] [2021-10-16 03:08:26,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664744936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:08:26,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:08:26,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 20] imperfect sequences [] total 35 [2021-10-16 03:08:26,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195309751] [2021-10-16 03:08:26,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-16 03:08:26,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-16 03:08:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=942, Unknown=17, NotChecked=126, Total=1190 [2021-10-16 03:08:26,639 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:41,626 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_sll_create_#res.base| (_ bv0 32))) (not (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (_ bv4 32)) (_ bv0 32))) (not (= c_ULTIMATE.start_node_create_~temp~0.base (_ bv0 32))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_sll_prepend_~new_head~1.base)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (bvadd (_ bv4 32) c_ULTIMATE.start_sll_prepend_~new_head~1.offset)) (_ bv0 32))) (bvult |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#s~0.base|) (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (bvult |#StackHeapBarrier| |c_ULTIMATE.start_main_~#s~0.base|) (bvult (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) |#StackHeapBarrier|))) (not (= (_ bv0 32) |c_ULTIMATE.start_node_create_#res.base|)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) (_ bv0 32)) (not (= (_ bv0 32) c_ULTIMATE.start_sll_create_~head~0.base)) (or (forall ((v_arrayElimCell_80 (_ BitVec 32))) (not (= (_ bv0 32) (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_sll_prepend_~new_head~1.base)))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|))) (bvadd (_ bv4 32) v_arrayElimCell_80))))) (and (= c_ULTIMATE.start_sll_prepend_~head.base |c_ULTIMATE.start_main_~#s~0.base|) (= |c_ULTIMATE.start_main_~#s~0.offset| c_ULTIMATE.start_sll_prepend_~head.offset))) (not (= c_ULTIMATE.start_sll_create_~new_head~0.base (_ bv0 32)))) is different from false [2021-10-16 03:08:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:44,598 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-10-16 03:08:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 03:08:44,599 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 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 41 [2021-10-16 03:08:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:44,600 INFO L225 Difference]: With dead ends: 72 [2021-10-16 03:08:44,600 INFO L226 Difference]: Without dead ends: 72 [2021-10-16 03:08:44,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 76224.3ms TimeCoverageRelationStatistics Valid=352, Invalid=1711, Unknown=19, NotChecked=270, Total=2352 [2021-10-16 03:08:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-16 03:08:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-10-16 03:08:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-10-16 03:08:44,603 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 41 [2021-10-16 03:08:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:44,604 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-10-16 03:08:44,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-10-16 03:08:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 03:08:44,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:44,605 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 03:08:44,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:44,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:08:44,815 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 03:08:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2044526556, now seen corresponding path program 1 times [2021-10-16 03:08:44,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:44,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317606988] [2021-10-16 03:08:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:44,817 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:44,818 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:44,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:08:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:08:45,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-16 03:08:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:08:45,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:08:45,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:08:46,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:46,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 03:08:46,516 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:08:46,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 03:08:46,834 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:08:46,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-10-16 03:08:46,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:46,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-10-16 03:08:46,923 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-16 03:08:46,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 03:08:47,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:47,184 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-10-16 03:08:47,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 31 [2021-10-16 03:08:47,228 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-16 03:08:47,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-10-16 03:08:47,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:47,276 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 03:08:47,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 40 [2021-10-16 03:08:48,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:08:48,096 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-10-16 03:08:48,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 66 [2021-10-16 03:08:48,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:08:48,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 68 [2021-10-16 03:08:48,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:08:48,184 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 03:08:48,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 23 [2021-10-16 03:08:48,477 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-16 03:08:48,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 82 [2021-10-16 03:08:48,512 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-16 03:08:48,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 89 [2021-10-16 03:08:48,537 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-10-16 03:08:48,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 77 [2021-10-16 03:08:49,489 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-16 03:08:49,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 57 [2021-10-16 03:08:49,524 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-16 03:08:49,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2021-10-16 03:08:50,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 03:08:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:08:50,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:50,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:50,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-16 03:08:51,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:51,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-16 03:08:57,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:57,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 368 [2021-10-16 03:08:57,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:57,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 417 [2021-10-16 03:08:59,720 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse9 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_10))) (store .cse9 .cse1 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse9) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse8 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse8 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse7 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_9))) (store .cse7 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse7) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse6 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select .cse5 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset ULTIMATE.start_node_create_~data) .cse1 v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset v_DerPreprocessor_7))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-16 03:08:59,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:08:59,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 547 [2021-10-16 03:09:01,900 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= c_ULTIMATE.start_main_~data~0 (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse9 (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_10))) (store .cse9 .cse1 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse9) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse8 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse8 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse7 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 (_ bv0 32)) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_9))) (store .cse7 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse7) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse6 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select .cse5 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) .cse1 v_DerPreprocessor_11) c_ULTIMATE.start_node_create_~temp~0.offset ULTIMATE.start_node_create_~data) .cse1 v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset v_DerPreprocessor_7))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))))) is different from false [2021-10-16 03:09:02,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1195 treesize of output 1183 [2021-10-16 03:09:02,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5013 treesize of output 4937 [2021-10-16 03:09:02,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:02,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317606988] [2021-10-16 03:09:02,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:09:02,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [447068929] [2021-10-16 03:09:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:02,182 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:09:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:09:02,189 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:09:02,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 03:09:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:03,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-16 03:09:03,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:03,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:09:04,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:09:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:04,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 03:09:05,572 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:09:05,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-10-16 03:09:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:05,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 03:09:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:06,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2021-10-16 03:09:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:06,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-10-16 03:09:06,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:06,479 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-10-16 03:09:06,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 27 [2021-10-16 03:09:06,523 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-16 03:09:06,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-10-16 03:09:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:06,557 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 03:09:06,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 40 [2021-10-16 03:09:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:08,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:09:08,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:08,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 30 [2021-10-16 03:09:08,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:09:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:08,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:08,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 59 [2021-10-16 03:09:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:09:08,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2021-10-16 03:09:09,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:09,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 82 [2021-10-16 03:09:09,057 INFO L354 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2021-10-16 03:09:09,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 93 [2021-10-16 03:09:09,064 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:09,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2021-10-16 03:09:10,824 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-16 03:09:10,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 57 [2021-10-16 03:09:10,841 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-16 03:09:10,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2021-10-16 03:09:11,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 03:09:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:09:11,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:11,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:11,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-16 03:09:11,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:11,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-16 03:09:13,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:13,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 368 [2021-10-16 03:09:13,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:13,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 417 [2021-10-16 03:09:15,801 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= c_ULTIMATE.start_main_~data~0 (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse9 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_15))) (store .cse9 .cse1 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse9) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse8 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse8 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse7 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_14))) (store .cse7 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse7) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse6 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (.cse4 (bvadd (select (select .cse5 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|) (_ bv4 32)))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset ULTIMATE.start_node_create_~data) .cse1 v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset v_DerPreprocessor_7))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))))) is different from false [2021-10-16 03:09:15,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:09:15,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 547 [2021-10-16 03:09:59,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 667 treesize of output 659 [2021-10-16 03:09:59,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2785 treesize of output 2741 [2021-10-16 03:11:33,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:33,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-10-16 03:12:41,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314034 treesize of output 314026 [2021-10-16 03:12:43,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:12:43,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271811499] [2021-10-16 03:12:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:43,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:43,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:43,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:43,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 03:12:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:44,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-16 03:12:44,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:44,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:12:45,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:12:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:46,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-16 03:12:47,803 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-16 03:12:47,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-10-16 03:12:48,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:48,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-16 03:12:48,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:48,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2021-10-16 03:12:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:48,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-10-16 03:12:49,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:49,064 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-10-16 03:12:49,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 27 [2021-10-16 03:12:49,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:49,128 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 03:12:49,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2021-10-16 03:12:49,163 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-16 03:12:49,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-10-16 03:12:51,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:51,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:51,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:51,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 30 [2021-10-16 03:12:51,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:12:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:51,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:51,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 59 [2021-10-16 03:12:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:51,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2021-10-16 03:12:52,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:52,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 82 [2021-10-16 03:12:52,706 INFO L354 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2021-10-16 03:12:52,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 89 [2021-10-16 03:12:52,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:52,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 77 [2021-10-16 03:12:54,661 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-16 03:12:54,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 57 [2021-10-16 03:12:54,680 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-16 03:12:54,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2021-10-16 03:12:55,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-16 03:12:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:12:55,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:55,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:55,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-16 03:12:56,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:56,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-16 03:12:58,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:58,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 368 [2021-10-16 03:12:58,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:58,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 417 [2021-10-16 03:13:00,286 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_node_create_~data (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (let ((.cse1 (bvadd (_ bv4 32) c_ULTIMATE.start_node_create_~temp~0.offset))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse9 (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_21))) (store .cse9 .cse1 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_node_create_~temp~0.base .cse9) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse8 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse8 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.offset)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base (let ((.cse7 (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset v_DerPreprocessor_20))) (store .cse7 .cse1 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_node_create_~temp~0.base .cse7) c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset)))))) (store .cse6 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse6 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset c_ULTIMATE.start_node_create_~temp~0.base))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select .cse5 |c_ULTIMATE.start_main_~#s~0.base|) |c_ULTIMATE.start_main_~#s~0.offset|)))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_node_create_~temp~0.base) c_ULTIMATE.start_node_create_~temp~0.offset ULTIMATE.start_node_create_~data) .cse1 v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_sll_prepend_~head.base (store (select .cse0 c_ULTIMATE.start_sll_prepend_~head.base) c_ULTIMATE.start_sll_prepend_~head.offset v_DerPreprocessor_7))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))) c_ULTIMATE.start_main_~data~0)) is different from false [2021-10-16 03:13:00,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:13:00,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 547 [2021-10-16 03:13:46,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1195 treesize of output 1183 [2021-10-16 03:13:46,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5013 treesize of output 4937 [2021-10-16 03:13:46,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 03:13:46,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:13:46,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 03:13:46,263 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 03:13:46,264 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 03:13:46,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 03:13:46,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 03:13:46,272 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 03:13:46,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 03:13:46,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 03:13:46,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 03:13:46,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 03:13:46,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 03:13:46,274 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 03:13:46,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 03:13:46,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 03:13:46,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 03:13:46,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 03:13:46,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 03:13:46,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-16 03:13:46,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-16 03:13:46,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:13:46,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:13:46,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 03:13:46,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 03:13:46,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:46,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-16 03:13:46,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:46,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:46,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:13:46,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:13:46 BoogieIcfgContainer [2021-10-16 03:13:46,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:13:46,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:13:46,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:13:46,925 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:13:46,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:01:37" (3/4) ... [2021-10-16 03:13:46,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:13:46,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:13:46,933 INFO L168 Benchmark]: Toolchain (without parser) took 731182.34 ms. Allocated memory was 81.8 MB in the beginning and 446.7 MB in the end (delta: 364.9 MB). Free memory was 45.1 MB in the beginning and 306.5 MB in the end (delta: -261.4 MB). Peak memory consumption was 105.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,934 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 81.8 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:46,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.14 ms. Allocated memory is still 81.8 MB. Free memory was 44.9 MB in the beginning and 54.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.56 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 51.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,935 INFO L168 Benchmark]: Boogie Preprocessor took 82.96 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 49.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,936 INFO L168 Benchmark]: RCFGBuilder took 994.32 ms. Allocated memory is still 81.8 MB. Free memory was 49.7 MB in the beginning and 31.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,938 INFO L168 Benchmark]: TraceAbstraction took 729235.61 ms. Allocated memory was 81.8 MB in the beginning and 446.7 MB in the end (delta: 364.9 MB). Free memory was 63.1 MB in the beginning and 306.5 MB in the end (delta: -243.3 MB). Peak memory consumption was 120.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:46,939 INFO L168 Benchmark]: Witness Printer took 7.21 ms. Allocated memory is still 446.7 MB. Free memory is still 306.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:46,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 81.8 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 744.14 ms. Allocated memory is still 81.8 MB. Free memory was 44.9 MB in the beginning and 54.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.56 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 51.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.96 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 49.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 994.32 ms. Allocated memory is still 81.8 MB. Free memory was 49.7 MB in the beginning and 31.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 729235.61 ms. Allocated memory was 81.8 MB in the beginning and 446.7 MB in the end (delta: 364.9 MB). Free memory was 63.1 MB in the beginning and 306.5 MB in the end (delta: -243.3 MB). Peak memory consumption was 120.4 MB. Max. memory is 16.1 GB. * Witness Printer took 7.21 ms. Allocated memory is still 446.7 MB. Free memory is still 306.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 629]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 629. Possible FailurePath: [L605] const int len = 2; [L606] const int data = 1; [L607] SLL s = sll_create(len, data); [L584] SLL head = ((void *)0); [L585] COND TRUE len > 0 [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L586] SLL new_head = node_create(data); [L587] new_head->next = head [L588] head = new_head [L585] len-- [L585] COND TRUE len > 0 [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L586] SLL new_head = node_create(data); [L587] new_head->next = head [L588] head = new_head [L585] len-- [L585] COND FALSE !(len > 0) [L590] return head; [L607] SLL s = sll_create(len, data); [L608] const int uneq = 5; [L575] SLL temp = (SLL) malloc(sizeof(struct node)); [L576] COND FALSE !(((void *)0) == temp) [L579] temp->next = ((void *)0) [L580] temp->data = data [L581] return temp; [L600] SLL new_head = node_create(data); [L601] EXPR \read(*head) [L601] new_head->next = *head [L602] *head = new_head [L610] EXPR \read(s) [L610] SLL ptr = s; [L611] EXPR ptr->data [L611] COND FALSE !(uneq != ptr->data) [L614] EXPR ptr->next [L614] ptr = ptr->next [L615] int count = 1; [L616] COND TRUE \read(ptr) [L617] EXPR ptr->next [L617] SLL temp = ptr->next; [L618] EXPR ptr->data [L618] COND TRUE data != ptr->data [L629] reach_error() - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 614]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 614]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 617]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 617]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 627]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 627]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 595]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 604]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 729109.1ms, OverallIterations: 16, TraceHistogramMax: 2, EmptinessCheckTime: 48.8ms, AutomataDifference: 91872.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 656 SDtfs, 3042 SDslu, 1747 SDs, 0 SdLazy, 3095 SolverSat, 229 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 34802.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 821 GetRequests, 543 SyntacticMatches, 18 SemanticMatches, 260 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 203953.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 146.7ms AutomataMinimizationTime, 15 MinimizatonAttempts, 281 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 235.8ms SsaConstructionTime, 2115.5ms SatisfiabilityAnalysisTime, 326577.1ms InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 740 ConstructedInterpolants, 212 QuantifiedInterpolants, 19471 SizeOfPredicates, 181 NumberOfNonLiveVariables, 2017 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 30 InterpolantComputations, 26 PerfectInterpolantSequences, 179/220 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 03:13:47,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad53f6cd-9fd6-4ded-8bc8-db934b296a11/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...