./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:23:03,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:23:03,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:23:03,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:23:03,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:23:03,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:23:03,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:23:03,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:23:03,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:23:03,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:23:03,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:23:03,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:23:03,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:23:03,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:23:03,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:23:03,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:23:03,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:23:03,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:23:03,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:23:03,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:23:03,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:23:03,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:23:03,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:23:03,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:23:03,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:23:03,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:23:03,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:23:03,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:23:03,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:23:03,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:23:03,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:23:03,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:23:03,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:23:03,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:23:03,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:23:03,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:23:03,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:23:03,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:23:03,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:23:03,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:23:03,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:23:03,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-16 02:23:03,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:23:03,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:23:03,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:23:03,390 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:23:03,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:23:03,390 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:23:03,391 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:23:03,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:23:03,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:23:03,392 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:23:03,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:23:03,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:23:03,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:23:03,393 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:23:03,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:23:03,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:03,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:23:03,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:23:03,395 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:23:03,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:23:03,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:23:03,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:23:03,396 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 [2021-10-16 02:23:03,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:23:03,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:23:03,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:23:03,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:23:03,707 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:23:03,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-16 02:23:03,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/8fbfe19f4/abeef7f85b364ab1a5d9d1f66b3208f9/FLAG3f3e77ef3 [2021-10-16 02:23:04,288 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:23:04,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-16 02:23:04,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/8fbfe19f4/abeef7f85b364ab1a5d9d1f66b3208f9/FLAG3f3e77ef3 [2021-10-16 02:23:04,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/8fbfe19f4/abeef7f85b364ab1a5d9d1f66b3208f9 [2021-10-16 02:23:04,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:23:04,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:23:04,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:04,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:23:04,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:23:04,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:04" (1/1) ... [2021-10-16 02:23:04,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e827175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:04, skipping insertion in model container [2021-10-16 02:23:04,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:04" (1/1) ... [2021-10-16 02:23:04,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:23:04,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:23:05,114 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-16 02:23:05,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:05,140 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:23:05,205 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-16 02:23:05,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:05,244 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:23:05,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05 WrapperNode [2021-10-16 02:23:05,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:05,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:05,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:23:05,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:23:05,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:05,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:23:05,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:23:05,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:23:05,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:23:05,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:23:05,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:23:05,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:23:05,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (1/1) ... [2021-10-16 02:23:05,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:05,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:23:05,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:23:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:23:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:23:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:23:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:23:05,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:23:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:23:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:23:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:23:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:23:05,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:23:06,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:23:06,132 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-16 02:23:06,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:06 BoogieIcfgContainer [2021-10-16 02:23:06,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:23:06,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:23:06,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:23:06,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:23:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:23:04" (1/3) ... [2021-10-16 02:23:06,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415d0687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:06, skipping insertion in model container [2021-10-16 02:23:06,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:05" (2/3) ... [2021-10-16 02:23:06,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415d0687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:06, skipping insertion in model container [2021-10-16 02:23:06,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:06" (3/3) ... [2021-10-16 02:23:06,144 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-10-16 02:23:06,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:23:06,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-10-16 02:23:06,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:23:06,203 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 02:23:06,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-16 02:23:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 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 02:23:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:23:06,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:06,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:23:06,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash 200758, now seen corresponding path program 1 times [2021-10-16 02:23:06,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:06,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263012776] [2021-10-16 02:23:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:06,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:06,476 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 02:23:06,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:06,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263012776] [2021-10-16 02:23:06,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263012776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:06,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:06,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:23:06,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596686465] [2021-10-16 02:23:06,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:06,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:23:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,520 INFO L87 Difference]: Start difference. First operand has 72 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:06,575 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-10-16 02:23:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-16 02:23:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:06,588 INFO L225 Difference]: With dead ends: 95 [2021-10-16 02:23:06,588 INFO L226 Difference]: Without dead ends: 92 [2021-10-16 02:23:06,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-16 02:23:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2021-10-16 02:23:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 70 states have internal predecessors, (79), 0 states have call successors, (0), 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 02:23:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-10-16 02:23:06,639 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 3 [2021-10-16 02:23:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:06,639 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-10-16 02:23:06,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-10-16 02:23:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:23:06,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:06,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:23:06,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:23:06,642 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 02:23:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash 6058691, now seen corresponding path program 1 times [2021-10-16 02:23:06,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:06,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010955290] [2021-10-16 02:23:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:06,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:06,709 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 02:23:06,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:06,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010955290] [2021-10-16 02:23:06,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010955290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:06,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:06,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:23:06,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079736773] [2021-10-16 02:23:06,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:06,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:23:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:06,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,714 INFO L87 Difference]: Start difference. First operand 71 states and 79 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 02:23:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:06,816 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-10-16 02:23:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:06,817 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 02:23:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:06,820 INFO L225 Difference]: With dead ends: 93 [2021-10-16 02:23:06,821 INFO L226 Difference]: Without dead ends: 93 [2021-10-16 02:23:06,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-16 02:23:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2021-10-16 02:23:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 65 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 02:23:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-10-16 02:23:06,839 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 4 [2021-10-16 02:23:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:06,839 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-10-16 02:23:06,839 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 02:23:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-10-16 02:23:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:23:06,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:06,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:23:06,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:23:06,845 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 02:23:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash 6058692, now seen corresponding path program 1 times [2021-10-16 02:23:06,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:06,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73002074] [2021-10-16 02:23:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:06,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:06,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:06,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73002074] [2021-10-16 02:23:06,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73002074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:06,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:06,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:23:06,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761107731] [2021-10-16 02:23:06,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:06,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:23:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,928 INFO L87 Difference]: Start difference. First operand 66 states and 74 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 02:23:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:06,986 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-16 02:23:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:06,986 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 02:23:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:06,987 INFO L225 Difference]: With dead ends: 61 [2021-10-16 02:23:06,988 INFO L226 Difference]: Without dead ends: 61 [2021-10-16 02:23:06,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-16 02:23:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-16 02:23:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 60 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 02:23:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-10-16 02:23:06,994 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 4 [2021-10-16 02:23:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:06,995 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-10-16 02:23:06,995 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 02:23:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-10-16 02:23:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:23:06,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:06,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:06,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:23:06,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:06,997 INFO L82 PathProgramCache]: Analyzing trace with hash 703284186, now seen corresponding path program 1 times [2021-10-16 02:23:06,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:06,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451848192] [2021-10-16 02:23:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:06,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:07,105 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 02:23:07,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:07,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451848192] [2021-10-16 02:23:07,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451848192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:07,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:07,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:23:07,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870839776] [2021-10-16 02:23:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:23:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:07,108 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 02:23:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:07,136 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-10-16 02:23:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:07,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-16 02:23:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:07,138 INFO L225 Difference]: With dead ends: 69 [2021-10-16 02:23:07,138 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 02:23:07,138 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 02:23:07,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 02:23:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-10-16 02:23:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 67 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 02:23:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-16 02:23:07,144 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 10 [2021-10-16 02:23:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:07,145 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-16 02:23:07,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 02:23:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-16 02:23:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:23:07,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:07,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:07,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:23:07,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:07,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1546396709, now seen corresponding path program 1 times [2021-10-16 02:23:07,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:23:07,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379592993] [2021-10-16 02:23:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:07,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:23:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:07,252 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 02:23:07,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:23:07,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379592993] [2021-10-16 02:23:07,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379592993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:23:07,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766315010] [2021-10-16 02:23:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:07,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:07,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:07,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:23:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:07,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:23:07,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:07,426 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 02:23:07,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:07,504 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 02:23:07,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766315010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:07,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1514330402] [2021-10-16 02:23:07,526 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-10-16 02:23:07,526 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:23:07,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:23:07,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:23:07,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:23:07,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,596 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:23:07,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:23:07,599 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:23:07,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:23:07,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-16 02:23:07,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:23:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-16 02:23:07,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 02:23:07,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 02:23:07,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:23:07,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:23:07,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:07,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-16 02:23:07,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:23:07,702 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:104, output treesize:105 [2021-10-16 02:23:07,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:07,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:07,920 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_72| 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 02:23:07,923 INFO L168 Benchmark]: Toolchain (without parser) took 3299.67 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 63.2 MB in the beginning and 121.3 MB in the end (delta: -58.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,924 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:23:07,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.46 ms. Allocated memory is still 107.0 MB. Free memory was 63.0 MB in the beginning and 74.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.14 ms. Allocated memory is still 107.0 MB. Free memory was 74.9 MB in the beginning and 72.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,927 INFO L168 Benchmark]: Boogie Preprocessor took 59.95 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 71.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,927 INFO L168 Benchmark]: RCFGBuilder took 772.18 ms. Allocated memory is still 107.0 MB. Free memory was 71.0 MB in the beginning and 50.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,928 INFO L168 Benchmark]: TraceAbstraction took 1784.82 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 49.6 MB in the beginning and 121.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:23:07,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 620.46 ms. Allocated memory is still 107.0 MB. Free memory was 63.0 MB in the beginning and 74.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.14 ms. Allocated memory is still 107.0 MB. Free memory was 74.9 MB in the beginning and 72.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.95 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 71.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 772.18 ms. Allocated memory is still 107.0 MB. Free memory was 71.0 MB in the beginning and 50.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1784.82 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 49.6 MB in the beginning and 121.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_72| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_72|: 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 02:23:07,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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 02:23:10,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:23:10,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:23:10,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:23:10,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:23:10,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:23:10,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:23:10,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:23:10,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:23:10,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:23:10,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:23:10,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:23:10,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:23:10,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:23:10,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:23:10,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:23:10,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:23:10,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:23:10,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:23:10,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:23:10,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:23:10,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:23:10,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:23:10,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:23:10,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:23:10,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:23:10,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:23:10,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:23:10,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:23:10,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:23:10,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:23:10,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:23:10,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:23:10,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:23:10,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:23:10,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:23:10,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:23:10,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:23:10,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:23:10,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:23:10,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:23:10,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-10-16 02:23:10,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:23:10,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:23:10,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:23:10,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:23:10,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:23:10,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:23:10,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:23:10,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:23:10,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:23:10,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:23:10,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:23:10,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:23:10,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:23:10,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:23:10,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:23:10,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:23:10,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:23:10,677 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:23:10,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:23:10,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:23:10,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:23:10,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:23:10,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:23:10,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:23:10,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:23:10,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:23:10,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:23:10,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:23:10,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:10,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:23:10,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:23:10,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:23:10,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:10,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:23:10,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:23:10,681 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 [2021-10-16 02:23:11,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:23:11,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:23:11,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:23:11,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:23:11,111 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:23:11,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-16 02:23:11,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/fe5efe728/ab5ae49a59514280a87021393d11e9db/FLAG33eaa13bc [2021-10-16 02:23:11,796 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:23:11,796 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-16 02:23:11,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/fe5efe728/ab5ae49a59514280a87021393d11e9db/FLAG33eaa13bc [2021-10-16 02:23:12,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/data/fe5efe728/ab5ae49a59514280a87021393d11e9db [2021-10-16 02:23:12,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:23:12,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:23:12,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:12,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:23:12,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:23:12,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2432af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12, skipping insertion in model container [2021-10-16 02:23:12,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:23:12,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:23:12,563 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-16 02:23:12,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:12,593 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:23:12,654 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_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-16 02:23:12,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:23:12,709 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:23:12,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12 WrapperNode [2021-10-16 02:23:12,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:23:12,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:12,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:23:12,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:23:12,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:23:12,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:23:12,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:23:12,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:23:12,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:23:12,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:23:12,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:23:12,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:23:12,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (1/1) ... [2021-10-16 02:23:12,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:23:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:12,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:23:12,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:23:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:23:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:23:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:23:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:23:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:23:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:23:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:23:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:23:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:23:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:23:13,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:23:13,659 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-16 02:23:13,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:13 BoogieIcfgContainer [2021-10-16 02:23:13,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:23:13,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:23:13,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:23:13,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:23:13,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:23:12" (1/3) ... [2021-10-16 02:23:13,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376e149e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:13, skipping insertion in model container [2021-10-16 02:23:13,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:23:12" (2/3) ... [2021-10-16 02:23:13,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376e149e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:23:13, skipping insertion in model container [2021-10-16 02:23:13,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:13" (3/3) ... [2021-10-16 02:23:13,669 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-10-16 02:23:13,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:23:13,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-10-16 02:23:13,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:23:13,724 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 02:23:13,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-16 02:23:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 86 states have internal predecessors, (101), 0 states have call successors, (0), 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 02:23:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:23:13,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:13,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:23:13,746 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 02:23:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2021-10-16 02:23:13,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:13,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631489753] [2021-10-16 02:23:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:13,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:13,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:13,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:23:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:13,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:23:13,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:13,915 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 02:23:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:13,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:13,989 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 02:23:13,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:13,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631489753] [2021-10-16 02:23:13,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631489753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:13,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:13,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:23:13,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570264645] [2021-10-16 02:23:13,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:14,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:14,047 INFO L87 Difference]: Start difference. First operand has 87 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 86 states have internal predecessors, (101), 0 states have call successors, (0), 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 02:23:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:14,372 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-10-16 02:23:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:14,374 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 02:23:14,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:14,406 INFO L225 Difference]: With dead ends: 143 [2021-10-16 02:23:14,407 INFO L226 Difference]: Without dead ends: 138 [2021-10-16 02:23:14,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-16 02:23:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 79. [2021-10-16 02:23:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 78 states have internal predecessors, (88), 0 states have call successors, (0), 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 02:23:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-10-16 02:23:14,464 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 5 [2021-10-16 02:23:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:14,465 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-10-16 02:23:14,465 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 02:23:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-10-16 02:23:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:23:14,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:14,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:23:14,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:14,680 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 02:23:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2021-10-16 02:23:14,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:14,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014400242] [2021-10-16 02:23:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:14,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:14,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:14,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:14,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:23:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:14,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:14,798 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 02:23:14,842 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 02:23:14,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:14,960 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 02:23:14,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:14,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014400242] [2021-10-16 02:23:14,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014400242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:14,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:14,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:23:14,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466506746] [2021-10-16 02:23:14,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:23:14,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:23:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:14,965 INFO L87 Difference]: Start difference. First operand 79 states and 88 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 02:23:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:15,379 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2021-10-16 02:23:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:15,380 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 02:23:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:15,382 INFO L225 Difference]: With dead ends: 133 [2021-10-16 02:23:15,382 INFO L226 Difference]: Without dead ends: 133 [2021-10-16 02:23:15,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-16 02:23:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 74. [2021-10-16 02:23:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.6938775510204083) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 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 02:23:15,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-10-16 02:23:15,399 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 5 [2021-10-16 02:23:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:15,400 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-10-16 02:23:15,405 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 02:23:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-10-16 02:23:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:23:15,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:15,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:23:15,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:15,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 889672534, now seen corresponding path program 1 times [2021-10-16 02:23:15,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:15,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003841880] [2021-10-16 02:23:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:15,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:15,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:15,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:23:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:23:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:15,723 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 02:23:15,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:15,744 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 02:23:15,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:15,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003841880] [2021-10-16 02:23:15,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003841880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:15,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:15,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:23:15,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128681270] [2021-10-16 02:23:15,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:23:15,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:23:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:15,747 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:15,771 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2021-10-16 02:23:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:23:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:23:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:15,773 INFO L225 Difference]: With dead ends: 89 [2021-10-16 02:23:15,774 INFO L226 Difference]: Without dead ends: 89 [2021-10-16 02:23:15,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-16 02:23:15,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-10-16 02:23:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.6129032258064515) internal successors, (100), 86 states have internal predecessors, (100), 0 states have call successors, (0), 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 02:23:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2021-10-16 02:23:15,782 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 6 [2021-10-16 02:23:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:15,782 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2021-10-16 02:23:15,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2021-10-16 02:23:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:23:15,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:15,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:15,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:15,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1233220919, now seen corresponding path program 1 times [2021-10-16 02:23:15,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:15,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239261402] [2021-10-16 02:23:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:15,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:15,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:16,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:23:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:16,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:16,220 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 02:23:16,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:16,328 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 02:23:16,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:16,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239261402] [2021-10-16 02:23:16,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239261402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:16,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:16,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:23:16,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415802342] [2021-10-16 02:23:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:23:16,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:23:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:23:16,330 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 02:23:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:16,376 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-10-16 02:23:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 13 [2021-10-16 02:23:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:16,383 INFO L225 Difference]: With dead ends: 87 [2021-10-16 02:23:16,383 INFO L226 Difference]: Without dead ends: 87 [2021-10-16 02:23:16,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 02:23:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-16 02:23:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-10-16 02:23:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 85 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-10-16 02:23:16,389 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 13 [2021-10-16 02:23:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:16,389 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-10-16 02:23:16,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 02:23:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-10-16 02:23:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:23:16,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:16,390 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:16,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:16,591 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 02:23:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1793437347, now seen corresponding path program 1 times [2021-10-16 02:23:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:16,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450536944] [2021-10-16 02:23:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:16,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:16,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:16,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:23:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:23:16,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:16,811 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 02:23:16,915 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:23:16,915 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 16 treesize of output 21 [2021-10-16 02:23:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:16,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:17,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:17,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450536944] [2021-10-16 02:23:17,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450536944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:17,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [769195032] [2021-10-16 02:23:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:17,109 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:17,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:17,115 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:17,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:23:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:17,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:23:17,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:17,406 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 02:23:17,475 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:23:17,476 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 15 treesize of output 20 [2021-10-16 02:23:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:17,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:17,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [769195032] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:17,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456299999] [2021-10-16 02:23:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:17,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:17,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:17,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:23:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:23:17,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:17,798 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 02:23:17,869 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:23:17,869 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 21 treesize of output 28 [2021-10-16 02:23:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:18,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456299999] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:22,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:23:22,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 4, 4] total 6 [2021-10-16 02:23:22,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967574001] [2021-10-16 02:23:22,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:23:22,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:23:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-10-16 02:23:22,609 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 02:23:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:23,081 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2021-10-16 02:23:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:23:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 24 [2021-10-16 02:23:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:23,083 INFO L225 Difference]: With dead ends: 117 [2021-10-16 02:23:23,083 INFO L226 Difference]: Without dead ends: 117 [2021-10-16 02:23:23,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4304.3ms TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-10-16 02:23:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-16 02:23:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 85. [2021-10-16 02:23:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 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 02:23:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-10-16 02:23:23,090 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 24 [2021-10-16 02:23:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:23,090 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-10-16 02:23:23,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 02:23:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-10-16 02:23:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:23:23,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:23,092 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:23,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:23,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:23,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:23,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:23,693 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1793437348, now seen corresponding path program 1 times [2021-10-16 02:23:23,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:23,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005228396] [2021-10-16 02:23:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:23,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:23,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:23,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:23,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:23:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:23,962 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 02:23:24,093 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:23:24,093 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 12 treesize of output 14 [2021-10-16 02:23:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:24,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:24,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005228396] [2021-10-16 02:23:24,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005228396] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66316356] [2021-10-16 02:23:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:24,759 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:24,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:24,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:23:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:25,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:23:25,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:25,147 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 02:23:25,157 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 02:23:25,368 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:23:25,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-10-16 02:23:25,388 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:23:25,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-16 02:23:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:25,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [66316356] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:32,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291243225] [2021-10-16 02:23:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:32,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:32,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:32,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:32,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:23:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:23:33,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:33,186 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 02:23:33,196 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 02:23:33,426 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:23:33,427 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 27 treesize of output 29 [2021-10-16 02:23:33,445 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:23:33,445 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 26 treesize of output 26 [2021-10-16 02:23:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:33,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:36,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291243225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:36,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:23:36,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4, 4, 4, 4] total 11 [2021-10-16 02:23:36,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300713273] [2021-10-16 02:23:36,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:23:36,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:23:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=89, Unknown=3, NotChecked=0, Total=132 [2021-10-16 02:23:36,855 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 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 02:23:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:37,573 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-10-16 02:23:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:23:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 02:23:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:37,575 INFO L225 Difference]: With dead ends: 116 [2021-10-16 02:23:37,575 INFO L226 Difference]: Without dead ends: 116 [2021-10-16 02:23:37,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 9069.5ms TimeCoverageRelationStatistics Valid=75, Invalid=132, Unknown=3, NotChecked=0, Total=210 [2021-10-16 02:23:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-16 02:23:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 84. [2021-10-16 02:23:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.540983606557377) 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 02:23:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-10-16 02:23:37,581 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 24 [2021-10-16 02:23:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:37,582 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-10-16 02:23:37,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 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 02:23:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-10-16 02:23:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:23:37,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:37,590 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:37,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:37,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:38,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:38,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:38,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:38,203 INFO L82 PathProgramCache]: Analyzing trace with hash 371932886, now seen corresponding path program 1 times [2021-10-16 02:23:38,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:38,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887442107] [2021-10-16 02:23:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:38,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:38,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:38,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:38,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:23:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:38,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:38,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:38,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887442107] [2021-10-16 02:23:38,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887442107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:38,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [385507835] [2021-10-16 02:23:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:38,752 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:38,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:38,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:38,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:23:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:39,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:39,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [385507835] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:39,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655951736] [2021-10-16 02:23:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:39,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:39,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:39,360 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:39,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:23:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:39,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:39,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:39,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655951736] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:39,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:23:39,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 02:23:39,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511135780] [2021-10-16 02:23:39,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:23:39,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:23:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:39,923 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:23:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:40,076 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-10-16 02:23:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:23:40,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-16 02:23:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:40,085 INFO L225 Difference]: With dead ends: 84 [2021-10-16 02:23:40,085 INFO L226 Difference]: Without dead ends: 84 [2021-10-16 02:23:40,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:23:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-16 02:23:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-16 02:23:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 83 states have internal predecessors, (93), 0 states have call successors, (0), 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 02:23:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-10-16 02:23:40,103 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 28 [2021-10-16 02:23:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:40,104 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-10-16 02:23:40,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:23:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-10-16 02:23:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:23:40,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:40,105 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:40,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:40,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 02:23:40,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-16 02:23:40,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:40,708 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 02:23:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:40,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1632786717, now seen corresponding path program 1 times [2021-10-16 02:23:40,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:40,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183289630] [2021-10-16 02:23:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:40,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:40,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:40,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:23:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:41,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:41,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:41,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:41,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:41,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183289630] [2021-10-16 02:23:41,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183289630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:41,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1234270593] [2021-10-16 02:23:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:41,417 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:41,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:41,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:41,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 02:23:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:41,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:41,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:41,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:42,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1234270593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:42,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751429305] [2021-10-16 02:23:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:42,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:42,114 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:42,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 02:23:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:42,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:23:42,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:42,470 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 02:23:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:42,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:42,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751429305] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:42,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:23:42,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 12 [2021-10-16 02:23:42,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843615449] [2021-10-16 02:23:42,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:23:42,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:23:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:23:42,739 INFO L87 Difference]: Start difference. First operand 84 states and 93 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 02:23:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:43,416 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-10-16 02:23:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:23:43,417 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 02:23:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:43,418 INFO L225 Difference]: With dead ends: 105 [2021-10-16 02:23:43,418 INFO L226 Difference]: Without dead ends: 105 [2021-10-16 02:23:43,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 250.6ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:23:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-16 02:23:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2021-10-16 02:23:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.421875) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 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 02:23:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-10-16 02:23:43,433 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 29 [2021-10-16 02:23:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:43,433 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-10-16 02:23:43,433 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 02:23:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-10-16 02:23:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:23:43,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:43,435 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:43,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:43,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-10-16 02:23:43,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:44,040 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 02:23:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1632786716, now seen corresponding path program 1 times [2021-10-16 02:23:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409638915] [2021-10-16 02:23:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:44,041 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:44,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:44,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:44,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:23:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:44,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:44,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:44,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:44,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409638915] [2021-10-16 02:23:44,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409638915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:44,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [856033189] [2021-10-16 02:23:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:44,722 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:44,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:44,735 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:44,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:23:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:45,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:45,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [856033189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:45,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381034782] [2021-10-16 02:23:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:45,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:45,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:45,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:23:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:46,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:23:46,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:46,162 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 02:23:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:46,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:47,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381034782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:47,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:23:47,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 16 [2021-10-16 02:23:47,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327616134] [2021-10-16 02:23:47,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:23:47,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:23:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:23:47,124 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 02:23:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:48,189 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2021-10-16 02:23:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:23:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 02:23:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:48,192 INFO L225 Difference]: With dead ends: 138 [2021-10-16 02:23:48,193 INFO L226 Difference]: Without dead ends: 138 [2021-10-16 02:23:48,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 768.1ms TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:23:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-16 02:23:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 101. [2021-10-16 02:23:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 87 states have (on average 1.367816091954023) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 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 02:23:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2021-10-16 02:23:48,200 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 29 [2021-10-16 02:23:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:48,200 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2021-10-16 02:23:48,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 02:23:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2021-10-16 02:23:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:23:48,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:48,202 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:48,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:48,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:48,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:48,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:48,806 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1342498124, now seen corresponding path program 1 times [2021-10-16 02:23:48,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:48,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772025804] [2021-10-16 02:23:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:48,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:48,810 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:23:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:49,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:49,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:49,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:49,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:49,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772025804] [2021-10-16 02:23:49,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772025804] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:49,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807395058] [2021-10-16 02:23:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:49,558 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:49,559 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:49,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:23:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:50,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:23:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:50,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:23:50,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [807395058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:50,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:23:50,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5, 5] total 12 [2021-10-16 02:23:50,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908934890] [2021-10-16 02:23:50,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:23:50,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:23:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:23:50,345 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:23:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:50,762 INFO L93 Difference]: Finished difference Result 110 states and 127 transitions. [2021-10-16 02:23:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:23:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-16 02:23:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:50,763 INFO L225 Difference]: With dead ends: 110 [2021-10-16 02:23:50,763 INFO L226 Difference]: Without dead ends: 110 [2021-10-16 02:23:50,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 231.2ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:23:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-16 02:23:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2021-10-16 02:23:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 100 states have internal predecessors, (118), 0 states have call successors, (0), 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 02:23:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2021-10-16 02:23:50,769 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 33 [2021-10-16 02:23:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:50,769 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2021-10-16 02:23:50,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:23:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2021-10-16 02:23:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:23:50,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:50,771 INFO L512 BasicCegarLoop]: trace histogram [2, 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 02:23:50,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:50,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-16 02:23:51,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:51,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:23:51,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1058300424, now seen corresponding path program 1 times [2021-10-16 02:23:51,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:51,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363436516] [2021-10-16 02:23:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:51,175 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:51,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:51,177 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:51,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:23:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:51,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:51,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:51,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:51,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363436516] [2021-10-16 02:23:51,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363436516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:51,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1394461554] [2021-10-16 02:23:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:51,904 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:51,905 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:51,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-16 02:23:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:23:52,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:52,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1394461554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:52,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663988739] [2021-10-16 02:23:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:52,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:23:52,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:23:52,863 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:23:52,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-16 02:23:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:53,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:23:53,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:53,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:23:53,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663988739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:53,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:23:53,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 6] total 10 [2021-10-16 02:23:53,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61294829] [2021-10-16 02:23:53,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:23:53,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:23:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:23:53,926 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 02:23:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:54,126 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2021-10-16 02:23:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:23:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) Word has length 37 [2021-10-16 02:23:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:54,128 INFO L225 Difference]: With dead ends: 137 [2021-10-16 02:23:54,128 INFO L226 Difference]: Without dead ends: 137 [2021-10-16 02:23:54,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 206.4ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:23:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-16 02:23:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-10-16 02:23:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 136 states have internal predecessors, (157), 0 states have call successors, (0), 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 02:23:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-10-16 02:23:54,134 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 37 [2021-10-16 02:23:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:54,135 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-10-16 02:23:54,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 02:23:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-10-16 02:23:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-16 02:23:54,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:54,138 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:54,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:54,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:54,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:54,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:54,742 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 02:23:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:54,742 INFO L82 PathProgramCache]: Analyzing trace with hash 395073651, now seen corresponding path program 2 times [2021-10-16 02:23:54,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:54,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527549242] [2021-10-16 02:23:54,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:23:54,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:54,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:54,745 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:54,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 02:23:55,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:23:55,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:23:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:23:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:55,649 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 02:23:55,751 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:23:55,751 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 18 treesize of output 18 [2021-10-16 02:23:55,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:23:55,862 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-16 02:23:55,862 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 02:23:55,991 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-16 02:23:55,992 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 02:23:56,115 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 02:23:56,116 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 3 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:23:56,208 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-16 02:23:56,209 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 3 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:23:56,347 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-10-16 02:23:56,348 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 3 case distinctions, treesize of input 40 treesize of output 27 [2021-10-16 02:23:56,597 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:23:56,597 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 24 treesize of output 10 [2021-10-16 02:23:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:23:56,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:56,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:23:56,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:24:17,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:17,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-16 02:24:41,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:41,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:24:43,689 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_3) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_2)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:24:45,741 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_3) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_2)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:24:47,813 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32)) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_3) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_2)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:24:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 4 refuted. 3 times theorem prover too weak. 37 trivial. 5 not checked. [2021-10-16 02:24:48,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:48,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527549242] [2021-10-16 02:24:48,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527549242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:48,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848265290] [2021-10-16 02:24:48,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:24:48,954 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:24:48,959 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:24:48,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-16 02:24:50,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:24:50,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:24:50,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:24:50,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:50,454 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 02:24:50,539 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:24:50,539 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 15 treesize of output 15 [2021-10-16 02:24:50,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:24:50,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 02:24:50,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 02:24:50,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:24:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:50,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:24:51,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:51,093 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-10-16 02:24:51,094 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 3 case distinctions, treesize of input 40 treesize of output 27 [2021-10-16 02:24:51,479 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:51,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2021-10-16 02:24:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:24:51,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:51,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:51,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:24:53,598 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_4)) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset))) is different from false [2021-10-16 02:24:53,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:53,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-16 02:24:55,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_5)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_4))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:24:55,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:55,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:24:57,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_6) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_5)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_4))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:24:59,729 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_6) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_5)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_4))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:25:01,780 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32)) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_6) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_5)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_4))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:25:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 8 not checked. [2021-10-16 02:25:01,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848265290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:01,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745545127] [2021-10-16 02:25:01,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:25:01,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:25:01,956 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:25:01,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-16 02:25:02,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:25:02,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:25:02,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:25:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:02,690 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 02:25:02,763 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:25:02,763 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 16 treesize of output 16 [2021-10-16 02:25:02,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:25:02,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 02:25:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 02:25:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:02,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:25:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:03,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:03,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:03,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:25:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:03,097 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-10-16 02:25:03,097 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 3 case distinctions, treesize of input 40 treesize of output 27 [2021-10-16 02:25:03,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:03,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2021-10-16 02:25:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:25:03,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:03,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:03,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:25:17,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:17,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-16 02:25:19,458 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:25:19,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:19,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:25:21,486 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_9) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:25:23,530 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_9) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:25:25,600 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32)) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_9) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_8)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset))) is different from false [2021-10-16 02:25:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 4 refuted. 2 times theorem prover too weak. 37 trivial. 6 not checked. [2021-10-16 02:25:26,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745545127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:26,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:25:26,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13, 16, 13, 16] total 38 [2021-10-16 02:25:26,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973699844] [2021-10-16 02:25:26,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-16 02:25:26,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:25:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-16 02:25:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=551, Unknown=33, NotChecked=708, Total=1406 [2021-10-16 02:25:26,437 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 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 02:25:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:25:51,211 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2021-10-16 02:25:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:25:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 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 73 [2021-10-16 02:25:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:25:51,213 INFO L225 Difference]: With dead ends: 175 [2021-10-16 02:25:51,214 INFO L226 Difference]: Without dead ends: 175 [2021-10-16 02:25:51,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 395 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 12 IntricatePredicates, 2 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 104287.6ms TimeCoverageRelationStatistics Valid=424, Invalid=1482, Unknown=34, NotChecked=1140, Total=3080 [2021-10-16 02:25:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-16 02:25:51,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 137. [2021-10-16 02:25:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 136 states have internal predecessors, (156), 0 states have call successors, (0), 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 02:25:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2021-10-16 02:25:51,221 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 73 [2021-10-16 02:25:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:25:51,222 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2021-10-16 02:25:51,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 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 02:25:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2021-10-16 02:25:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-16 02:25:51,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:25:51,224 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:25:51,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-10-16 02:25:51,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-16 02:25:51,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-16 02:25:51,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:51,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:25:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:25:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash -959521032, now seen corresponding path program 1 times [2021-10-16 02:25:51,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:25:51,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398770159] [2021-10-16 02:25:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:25:51,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:25:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:25:51,833 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:25:51,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:25:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:25:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:25:52,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:52,841 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 02:25:52,919 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:25:52,919 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 16 treesize of output 16 [2021-10-16 02:25:52,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:25:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:53,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:25:53,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:53,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:25:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:25:53,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:25:53,169 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-16 02:25:53,170 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 33 treesize of output 17 [2021-10-16 02:25:53,371 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 15 treesize of output 7 [2021-10-16 02:25:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:25:53,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:53,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:53,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:25:55,751 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (store |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_10)) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:25:55,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:25:55,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:26:18,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:18,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:26:20,028 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_12) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_11)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_10))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:26:22,068 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_12) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_11)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_10))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:26:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 5 refuted. 1 times theorem prover too weak. 37 trivial. 6 not checked. [2021-10-16 02:26:25,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:25,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398770159] [2021-10-16 02:26:25,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398770159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:25,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1672070912] [2021-10-16 02:26:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:25,036 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:25,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:26:25,037 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:26:25,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-10-16 02:26:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:26,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:26:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:26,355 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 02:26:26,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:26:26,422 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 15 treesize of output 15 [2021-10-16 02:26:26,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:26:26,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:26,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:26:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:26,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:26:26,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:26,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:26:26,626 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-16 02:26:26,626 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 33 treesize of output 17 [2021-10-16 02:26:26,730 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 15 treesize of output 7 [2021-10-16 02:26:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:26:26,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:26,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:26,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:26:28,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_13)) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)))) is different from false [2021-10-16 02:26:28,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:28,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:26:30,903 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_14)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_13))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)))) is different from false [2021-10-16 02:26:30,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:30,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:26:32,942 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_15) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_14)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_13))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:26:34,991 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_15) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_14)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_13))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:26:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 7 not checked. [2021-10-16 02:26:35,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1672070912] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:35,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133457275] [2021-10-16 02:26:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:35,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:26:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:35,355 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:26:35,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-16 02:26:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:36,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:26:36,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:36,199 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 02:26:36,263 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:26:36,263 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 16 treesize of output 16 [2021-10-16 02:26:36,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:26:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:36,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:26:36,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:36,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:26:36,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:36,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-16 02:26:36,481 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-16 02:26:36,481 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 33 treesize of output 17 [2021-10-16 02:26:36,616 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 15 treesize of output 7 [2021-10-16 02:26:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:26:36,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:36,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:36,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-16 02:26:45,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:45,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:26:47,233 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_17)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_16))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)))) is different from false [2021-10-16 02:26:47,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:47,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:26:49,269 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_18) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_17)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_16))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32))) is different from false [2021-10-16 02:26:51,345 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_18) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_17)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_16))) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)))) is different from false [2021-10-16 02:26:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 5 not checked. [2021-10-16 02:26:51,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133457275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:51,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:26:51,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13, 16, 13, 16] total 30 [2021-10-16 02:26:51,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253329833] [2021-10-16 02:26:51,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-16 02:26:51,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-16 02:26:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=326, Unknown=23, NotChecked=450, Total=870 [2021-10-16 02:26:51,649 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 02:27:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:04,107 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2021-10-16 02:27:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-16 02:27:04,108 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 75 [2021-10-16 02:27:04,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:04,110 INFO L225 Difference]: With dead ends: 175 [2021-10-16 02:27:04,110 INFO L226 Difference]: Without dead ends: 175 [2021-10-16 02:27:04,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 417 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 10 IntricatePredicates, 2 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 61138.3ms TimeCoverageRelationStatistics Valid=320, Invalid=1029, Unknown=23, NotChecked=790, Total=2162 [2021-10-16 02:27:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-16 02:27:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 137. [2021-10-16 02:27:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 123 states have (on average 1.2601626016260163) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 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 02:27:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-10-16 02:27:04,118 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 75 [2021-10-16 02:27:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:04,118 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-10-16 02:27:04,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.066666666666667) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 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 02:27:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-10-16 02:27:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-16 02:27:04,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:04,121 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:04,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:04,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-16 02:27:04,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:04,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:04,736 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-10-16 02:27:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:04,736 INFO L82 PathProgramCache]: Analyzing trace with hash -18965013, now seen corresponding path program 1 times [2021-10-16 02:27:04,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:04,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906892243] [2021-10-16 02:27:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:04,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:04,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:04,738 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:04,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-16 02:27:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:05,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:27:05,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:06,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:27:06,229 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:27:06,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 15 [2021-10-16 02:27:06,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:27:06,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:06,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:27:06,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:06,561 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-16 02:27:06,561 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-10-16 02:27:06,978 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-10-16 02:27:06,979 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 44 treesize of output 21 [2021-10-16 02:27:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:27:07,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:09,329 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_create_~head~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) c_ULTIMATE.start_dll_create_~new_head~0.base)) c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset)) (_ bv0 32)))) is different from false [2021-10-16 02:27:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 2 not checked. [2021-10-16 02:27:21,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:21,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906892243] [2021-10-16 02:27:21,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906892243] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:21,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333361839] [2021-10-16 02:27:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:21,921 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:27:21,925 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:27:21,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-10-16 02:27:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:23,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:27:23,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:23,721 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 02:27:23,891 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:27:23,891 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 16 treesize of output 16 [2021-10-16 02:27:23,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:27:24,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 02:27:24,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-16 02:27:24,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:27:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-16 02:27:24,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:24,393 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-10-16 02:27:24,393 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 3 case distinctions, treesize of input 40 treesize of output 27 [2021-10-16 02:27:24,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:24,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2021-10-16 02:27:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:27:25,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:25,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:25,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:27:46,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:46,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-16 02:27:48,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_20)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_19))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:27:48,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:48,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:27:50,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_21) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_20)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_19))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:27:52,100 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_21) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_20)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_19))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:27:54,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_dll_create_#t~ite7| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_dll_create_~head~0.offset (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_ULTIMATE.start_dll_create_~new_head~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32)) (bvadd (_ bv16 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) |ULTIMATE.start_dll_create_#t~ite7|) (bvadd (_ bv4 32) c_ULTIMATE.start_dll_create_~new_head~0.offset) v_DerPreprocessor_21) (bvadd c_ULTIMATE.start_dll_create_~new_head~0.offset (_ bv12 32)) v_DerPreprocessor_20)))) (store .cse0 c_ULTIMATE.start_dll_create_~head~0.base (store (select .cse0 c_ULTIMATE.start_dll_create_~head~0.base) (bvadd ULTIMATE.start_dll_create_~head~0.offset (_ bv12 32)) v_DerPreprocessor_19))) c_ULTIMATE.start_dll_create_~new_head~0.base) c_ULTIMATE.start_dll_create_~new_head~0.offset) (_ bv0 32))) is different from false [2021-10-16 02:27:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 6 not checked. [2021-10-16 02:27:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333361839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:58,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197674583] [2021-10-16 02:27:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:58,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:27:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:58,498 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:27:58,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-16 02:27:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:59,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:27:59,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:59,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:27:59,849 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:27:59,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 17 treesize of output 17 [2021-10-16 02:27:59,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 02:27:59,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:59,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:28:00,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:28:00,094 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-16 02:28:00,095 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-10-16 02:28:00,283 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-10-16 02:28:00,283 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 44 treesize of output 21 [2021-10-16 02:28:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-16 02:28:00,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:28:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 2 not checked. [2021-10-16 02:28:02,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197674583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:28:02,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:28:02,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 16, 12, 12] total 42 [2021-10-16 02:28:02,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785752142] [2021-10-16 02:28:02,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-16 02:28:02,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:28:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-16 02:28:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=20, NotChecked=370, Total=1722 [2021-10-16 02:28:02,414 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:29:54,971 WARN L207 SmtUtils]: Spent 17.01 s on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-10-16 02:30:41,221 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-10-16 02:31:46,267 WARN L207 SmtUtils]: Spent 26.30 s on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2021-10-16 02:32:34,970 WARN L207 SmtUtils]: Spent 12.09 s on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-10-16 02:32:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:37,387 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-10-16 02:32:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-16 02:32:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 0 states have call successors, (0), 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 76 [2021-10-16 02:32:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:37,392 INFO L225 Difference]: With dead ends: 127 [2021-10-16 02:32:37,393 INFO L226 Difference]: Without dead ends: 127 [2021-10-16 02:32:37,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 409 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 5 IntricatePredicates, 2 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 250743.0ms TimeCoverageRelationStatistics Valid=658, Invalid=2709, Unknown=75, NotChecked=590, Total=4032 [2021-10-16 02:32:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-16 02:32:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2021-10-16 02:32:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 122 states have internal predecessors, (137), 0 states have call successors, (0), 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 02:32:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2021-10-16 02:32:37,398 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 76 [2021-10-16 02:32:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:37,398 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2021-10-16 02:32:37,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2857142857142856) internal successors, (138), 42 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:32:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2021-10-16 02:32:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 02:32:37,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:37,400 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:37,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:37,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-16 02:32:37,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2021-10-16 02:32:38,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:38,001 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 02:32:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:38,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1319834141, now seen corresponding path program 1 times [2021-10-16 02:32:38,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:38,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720976406] [2021-10-16 02:32:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:38,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:38,003 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:38,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-16 02:32:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:32:39,468 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:32:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:32:40,157 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:32:40,157 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:32:40,159 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:32:40,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:32:40,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:32:40,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:32:40,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:32:40,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:32:40,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:32:40,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:32:40,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:32:40,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 02:32:40,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 02:32:40,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 02:32:40,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 02:32:40,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 02:32:40,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 02:32:40,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 02:32:40,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 02:32:40,165 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 02:32:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 02:32:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 02:32:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-16 02:32:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 02:32:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 02:32:40,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 02:32:40,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 02:32:40,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-16 02:32:40,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-16 02:32:40,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 02:32:40,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 02:32:40,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-16 02:32:40,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-16 02:32:40,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:32:40,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:32:40,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:32:40,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:32:40,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:40,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:40,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:32:40,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:32:40 BoogieIcfgContainer [2021-10-16 02:32:40,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:32:40,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:32:40,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:32:40,491 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:32:40,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:23:13" (3/4) ... [2021-10-16 02:32:40,493 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:32:40,572 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:32:40,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:32:40,573 INFO L168 Benchmark]: Toolchain (without parser) took 568503.31 ms. Allocated memory was 73.4 MB in the beginning and 323.0 MB in the end (delta: 249.6 MB). Free memory was 53.8 MB in the beginning and 196.2 MB in the end (delta: -142.4 MB). Peak memory consumption was 105.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,574 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.5 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:32:40,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.83 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 49.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.30 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 47.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,575 INFO L168 Benchmark]: Boogie Preprocessor took 71.34 ms. Allocated memory is still 73.4 MB. Free memory was 47.0 MB in the beginning and 45.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,576 INFO L168 Benchmark]: RCFGBuilder took 783.02 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 52.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,580 INFO L168 Benchmark]: TraceAbstraction took 566827.61 ms. Allocated memory was 73.4 MB in the beginning and 323.0 MB in the end (delta: 249.6 MB). Free memory was 51.3 MB in the beginning and 202.5 MB in the end (delta: -151.2 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,580 INFO L168 Benchmark]: Witness Printer took 81.78 ms. Allocated memory is still 323.0 MB. Free memory was 202.5 MB in the beginning and 196.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:32:40,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.5 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 637.83 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 49.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.30 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 47.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.34 ms. Allocated memory is still 73.4 MB. Free memory was 47.0 MB in the beginning and 45.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 783.02 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 52.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 566827.61 ms. Allocated memory was 73.4 MB in the beginning and 323.0 MB in the end (delta: 249.6 MB). Free memory was 51.3 MB in the beginning and 202.5 MB in the end (delta: -151.2 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. * Witness Printer took 81.78 ms. Allocated memory is still 323.0 MB. Free memory was 202.5 MB in the beginning and 196.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. 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 - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; [L579] DLL head = ((void *)0); [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND FALSE !(\read(head)) [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND FALSE !(len > 0) [L596] return head; [L600] DLL head = dll_create(len); [L601] head->next [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: 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: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: 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: 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: 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: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: 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, 87 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 566667.6ms, OverallIterations: 15, TraceHistogramMax: 5, EmptinessCheckTime: 34.1ms, AutomataDifference: 316857.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 969 SDtfs, 3987 SDslu, 3451 SDs, 0 SdLazy, 2761 SolverSat, 262 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 83340.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2598 GetRequests, 2322 SyntacticMatches, 32 SemanticMatches, 244 ConstructedPredicates, 27 IntricatePredicates, 6 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 431069.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=11, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 142.6ms AutomataMinimizationTime, 14 MinimizatonAttempts, 337 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 477.0ms SsaConstructionTime, 5494.7ms SatisfiabilityAnalysisTime, 223078.8ms InterpolantComputationTime, 1357 NumberOfCodeBlocks, 1357 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2494 ConstructedInterpolants, 167 QuantifiedInterpolants, 15818 SizeOfPredicates, 221 NumberOfNonLiveVariables, 5875 ConjunctsInSsa, 296 ConjunctsInUnsatCore, 66 InterpolantComputations, 14 PerfectInterpolantSequences, 2084/2662 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 proved your program to be incorrect! [2021-10-16 02:32:40,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98fd4d76-aa5b-49ce-a0ae-38e8df4870f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...