./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_update_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/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_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8db9818917d4101818df459d2d32c905a41e37ef ............................................................................................................................................................................................................................................................................................................................................................ 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/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_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8db9818917d4101818df459d2d32c905a41e37ef ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:18:17,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:18:17,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:18:17,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:18:17,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:18:17,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:18:17,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:18:17,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:18:17,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:18:17,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:18:17,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:18:17,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:18:17,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:18:17,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:18:17,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:18:17,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:18:17,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:18:17,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:18:17,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:18:17,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:18:17,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:18:17,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:18:17,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:18:17,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:18:17,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:18:17,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:18:17,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:18:17,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:18:17,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:18:17,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:18:17,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:18:17,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:18:17,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:18:18,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:18:18,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:18:18,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:18:18,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:18:18,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:18:18,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:18:18,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:18:18,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:18:18,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:18:18,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:18:18,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:18:18,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:18:18,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:18:18,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:18:18,061 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:18:18,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:18:18,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:18:18,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:18:18,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:18:18,070 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:18:18,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:18:18,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:18:18,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:18:18,071 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:18:18,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:18:18,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:18:18,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:18:18,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:18:18,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:18:18,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:18:18,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:18:18,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:18:18,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:18:18,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:18:18,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:18:18,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:18:18,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:18:18,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:18:18,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:18:18,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:18,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:18:18,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:18:18,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:18:18,078 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:18:18,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:18:18,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:18:18,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:18:18,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:18:18,079 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8db9818917d4101818df459d2d32c905a41e37ef [2021-10-16 03:18:18,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:18:18,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:18:18,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:18:18,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:18:18,425 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:18:18,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-16 03:18:18,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/97105303e/753b3babfa9b4c8a9a3c016eabc85021/FLAG3bc7f6c9b [2021-10-16 03:18:19,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:18:19,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-16 03:18:19,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/97105303e/753b3babfa9b4c8a9a3c016eabc85021/FLAG3bc7f6c9b [2021-10-16 03:18:19,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/97105303e/753b3babfa9b4c8a9a3c016eabc85021 [2021-10-16 03:18:19,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:18:19,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:18:19,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:19,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:18:19,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:18:19,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:19,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f840ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19, skipping insertion in model container [2021-10-16 03:18:19,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:19,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:18:19,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:18:19,783 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-16 03:18:19,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:19,803 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:18:19,877 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-16 03:18:19,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:19,916 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:18:19,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19 WrapperNode [2021-10-16 03:18:19,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:19,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:19,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:18:19,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:18:19,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:19,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:19,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:19,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:18:19,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:18:19,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:18:20,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:18:20,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:18:20,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:18:20,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:18:20,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (1/1) ... [2021-10-16 03:18:20,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:20,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:18:20,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:18:20,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:18:20,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:18:20,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:18:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:18:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:18:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:18:20,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:18:20,690 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:18:20,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:20 BoogieIcfgContainer [2021-10-16 03:18:20,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:18:20,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:18:20,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:18:20,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:18:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:18:19" (1/3) ... [2021-10-16 03:18:20,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de9342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:20, skipping insertion in model container [2021-10-16 03:18:20,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:19" (2/3) ... [2021-10-16 03:18:20,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de9342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:20, skipping insertion in model container [2021-10-16 03:18:20,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:20" (3/3) ... [2021-10-16 03:18:20,707 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2021-10-16 03:18:20,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:18:20,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:18:20,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:18:20,790 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:18:20,790 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:18:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:18:20,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:20,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:20,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1020711375, now seen corresponding path program 1 times [2021-10-16 03:18:20,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:18:20,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377269794] [2021-10-16 03:18:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:20,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:18:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:21,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:18:21,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377269794] [2021-10-16 03:18:21,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377269794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:18:21,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:18:21,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:18:21,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598048558] [2021-10-16 03:18:21,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:18:21,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:18:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:18:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:18:21,078 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:18:21,107 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-10-16 03:18:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:18:21,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-16 03:18:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:18:21,119 INFO L225 Difference]: With dead ends: 27 [2021-10-16 03:18:21,119 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 03:18:21,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:18:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 03:18:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-16 03:18:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-16 03:18:21,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2021-10-16 03:18:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:18:21,152 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-16 03:18:21,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-16 03:18:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:18:21,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:21,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:21,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:18:21,154 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:21,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1514154756, now seen corresponding path program 1 times [2021-10-16 03:18:21,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:18:21,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039915184] [2021-10-16 03:18:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:21,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:18:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:21,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:18:21,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039915184] [2021-10-16 03:18:21,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039915184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:18:21,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299518635] [2021-10-16 03:18:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:21,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:18:21,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:18:21,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:18:21,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:18:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:21,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:18:21,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:21,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:21,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299518635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:18:21,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [648868148] [2021-10-16 03:18:21,538 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-16 03:18:21,538 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:18:21,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:18:21,548 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:18:21,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:18:21,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,587 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:18:21,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:18:21,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:18:21,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 03:18:21,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-16 03:18:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:18:21,650 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 03:18:21,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 03:18:21,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-16 03:18:21,656 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:18:21,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:18:21,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:21,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-16 03:18:21,738 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:18:21,739 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:111 [2021-10-16 03:18:21,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:18:21,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:18:21,941 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_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:18:21,944 INFO L168 Benchmark]: Toolchain (without parser) took 2565.47 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 72.7 MB in the beginning and 63.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,944 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:18:21,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.59 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 72.5 MB in the end (delta: -12.9 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.58 ms. Allocated memory is still 104.9 MB. Free memory was 72.5 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,946 INFO L168 Benchmark]: Boogie Preprocessor took 62.03 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,947 INFO L168 Benchmark]: RCFGBuilder took 634.41 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 51.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,948 INFO L168 Benchmark]: TraceAbstraction took 1247.29 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 63.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:18:21,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.59 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 72.5 MB in the end (delta: -12.9 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.58 ms. Allocated memory is still 104.9 MB. Free memory was 72.5 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.03 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 634.41 ms. Allocated memory is still 104.9 MB. Free memory was 68.8 MB in the beginning and 51.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1247.29 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 63.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 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_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:18:22,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:18:24,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:18:24,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:18:24,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:18:24,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:18:24,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:18:24,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:18:24,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:18:24,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:18:24,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:18:24,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:18:24,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:18:24,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:18:24,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:18:24,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:18:24,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:18:24,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:18:24,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:18:24,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:18:24,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:18:24,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:18:24,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:18:24,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:18:24,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:18:24,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:18:24,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:18:24,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:18:24,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:18:24,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:18:24,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:18:24,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:18:24,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:18:24,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:18:24,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:18:24,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:18:24,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:18:24,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:18:24,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:18:24,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:18:24,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:18:24,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:18:24,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:18:24,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:18:24,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:18:24,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:18:24,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:18:24,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:18:24,856 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:18:24,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:18:24,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:18:24,857 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:18:24,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:18:24,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:18:24,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:18:24,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:18:24,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:18:24,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:18:24,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:18:24,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:18:24,862 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:18:24,862 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:18:24,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:18:24,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:18:24,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:18:24,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:18:24,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:18:24,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:18:24,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:18:24,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:24,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:18:24,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:18:24,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:18:24,866 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:18:24,866 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:18:24,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:18:24,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:18:24,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:18:24,868 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8db9818917d4101818df459d2d32c905a41e37ef [2021-10-16 03:18:25,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:18:25,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:18:25,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:18:25,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:18:25,303 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:18:25,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-16 03:18:25,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/78e08c08b/763050d3ca8d4610b92c40e32de63791/FLAG26d5fd9bd [2021-10-16 03:18:26,005 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:18:26,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-10-16 03:18:26,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/78e08c08b/763050d3ca8d4610b92c40e32de63791/FLAG26d5fd9bd [2021-10-16 03:18:26,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/data/78e08c08b/763050d3ca8d4610b92c40e32de63791 [2021-10-16 03:18:26,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:18:26,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:18:26,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:26,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:18:26,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:18:26,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:26,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759c5390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26, skipping insertion in model container [2021-10-16 03:18:26,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:26,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:18:26,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:18:26,737 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-16 03:18:26,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:26,764 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:18:26,846 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_f40f3f2e-439f-4224-a0a2-d75ee814b046/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-10-16 03:18:26,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:18:26,903 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:18:26,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26 WrapperNode [2021-10-16 03:18:26,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:18:26,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:26,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:18:26,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:18:26,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:26,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:18:27,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:18:27,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:18:27,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:18:27,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:18:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:18:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:18:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:18:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (1/1) ... [2021-10-16 03:18:27,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:18:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:18:27,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:18:27,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:18:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:18:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:18:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:18:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:18:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:18:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:18:27,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:18:27,709 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 03:18:27,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:27 BoogieIcfgContainer [2021-10-16 03:18:27,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:18:27,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:18:27,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:18:27,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:18:27,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:18:26" (1/3) ... [2021-10-16 03:18:27,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc5da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:27, skipping insertion in model container [2021-10-16 03:18:27,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:18:26" (2/3) ... [2021-10-16 03:18:27,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc5da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:18:27, skipping insertion in model container [2021-10-16 03:18:27,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:18:27" (3/3) ... [2021-10-16 03:18:27,722 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2021-10-16 03:18:27,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:18:27,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:18:27,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:18:27,803 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:18:27,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:18:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:18:27,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:27,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:27,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1121238131, now seen corresponding path program 1 times [2021-10-16 03:18:27,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:18:27,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005164427] [2021-10-16 03:18:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:27,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:18:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:18:27,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:18:27,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:18:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:27,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:18:27,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:28,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:28,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:18:28,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005164427] [2021-10-16 03:18:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005164427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:18:28,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:18:28,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:18:28,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937291326] [2021-10-16 03:18:28,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:18:28,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:18:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:18:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:18:28,109 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:18:28,135 INFO L93 Difference]: Finished difference Result 50 states and 73 transitions. [2021-10-16 03:18:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:18:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 03:18:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:18:28,151 INFO L225 Difference]: With dead ends: 50 [2021-10-16 03:18:28,151 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 03:18:28,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:18:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 03:18:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 03:18:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-16 03:18:28,196 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-10-16 03:18:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:18:28,196 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-16 03:18:28,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-16 03:18:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:18:28,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:28,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:28,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:18:28,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:18:28,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:28,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1860179837, now seen corresponding path program 1 times [2021-10-16 03:18:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:18:28,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57266283] [2021-10-16 03:18:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:28,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:18:28,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:18:28,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:18:28,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:18:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:28,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:18:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:28,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:28,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:18:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57266283] [2021-10-16 03:18:28,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57266283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:18:28,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:18:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:18:28,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130192845] [2021-10-16 03:18:28,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:18:28,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:18:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:18:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:18:28,686 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:18:28,728 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-16 03:18:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:18:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 03:18:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:18:28,730 INFO L225 Difference]: With dead ends: 43 [2021-10-16 03:18:28,731 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:18:28,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:18:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:18:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 03:18:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-16 03:18:28,751 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2021-10-16 03:18:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:18:28,752 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-16 03:18:28,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-16 03:18:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 03:18:28,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:28,759 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:28,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:18:28,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:18:28,974 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash -650193283, now seen corresponding path program 1 times [2021-10-16 03:18:28,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:18:28,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397696180] [2021-10-16 03:18:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:28,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:18:28,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:18:28,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:18:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:18:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:29,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:18:29,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:29,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:29,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:18:29,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397696180] [2021-10-16 03:18:29,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397696180] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:18:29,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:18:29,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:18:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672072448] [2021-10-16 03:18:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:18:29,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:18:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:18:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:18:29,412 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 03:18:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:18:29,485 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-10-16 03:18:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:18:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 23 [2021-10-16 03:18:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:18:29,487 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:18:29,487 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 03:18:29,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:18:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 03:18:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-10-16 03:18:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-10-16 03:18:29,494 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2021-10-16 03:18:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:18:29,495 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-10-16 03:18:29,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 03:18:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-10-16 03:18:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 03:18:29,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:29,496 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:29,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:18:29,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:18:29,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 218280017, now seen corresponding path program 1 times [2021-10-16 03:18:29,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:18:29,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725212882] [2021-10-16 03:18:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:29,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:18:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:18:29,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:18:29,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:18:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:29,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:18:29,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:18:30,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725212882] [2021-10-16 03:18:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725212882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:18:30,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938023123] [2021-10-16 03:18:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:30,171 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:18:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:18:30,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:18:30,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 03:18:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:18:30,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [938023123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:18:30,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560829605] [2021-10-16 03:18:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:30,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:18:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:18:30,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:18:30,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 03:18:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:30,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:18:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:18:30,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560829605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:18:30,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:18:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 03:18:30,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302746345] [2021-10-16 03:18:30,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:18:30,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:18:30,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:18:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:18:30,986 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 03:18:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:18:31,160 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2021-10-16 03:18:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:18:31,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 31 [2021-10-16 03:18:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:18:31,162 INFO L225 Difference]: With dead ends: 70 [2021-10-16 03:18:31,162 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 03:18:31,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:18:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 03:18:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2021-10-16 03:18:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:18:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-16 03:18:31,171 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 31 [2021-10-16 03:18:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:18:31,177 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-16 03:18:31,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 03:18:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-16 03:18:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 03:18:31,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:18:31,179 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:18:31,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:18:31,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:18:31,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:18:31,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:18:31,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:18:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:18:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash 343591370, now seen corresponding path program 1 times [2021-10-16 03:18:31,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:18:31,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804233341] [2021-10-16 03:18:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:31,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:18:31,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:18:31,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:18:31,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:18:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:32,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-16 03:18:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:32,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:18:32,187 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:18:32,188 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 03:18:32,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 03:18:32,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 03:18:32,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:18:32,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:18:32,793 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-16 03:18:32,905 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 03:18:32,905 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 23 treesize of output 22 [2021-10-16 03:18:33,111 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 03:18:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:33,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:18:35,402 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_update_at_~head.offset (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (store |c_#memory_int| c_ULTIMATE.start_sll_update_at_~head.base (store (select |c_#memory_int| c_ULTIMATE.start_sll_update_at_~head.base) ULTIMATE.start_sll_update_at_~head.offset ULTIMATE.start_sll_update_at_~data)) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-16 03:18:57,183 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 110 treesize of output 106 [2021-10-16 03:18:57,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:18:57,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-16 03:18:57,801 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 18 treesize of output 16 [2021-10-16 03:18:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 03:18:58,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:18:58,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804233341] [2021-10-16 03:18:58,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804233341] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:18:58,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032372092] [2021-10-16 03:18:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:18:58,095 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:18:58,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:18:58,097 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:18:58,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 03:18:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:18:58,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-16 03:18:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:18:58,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:18:58,625 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:18:58,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-16 03:18:58,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 03:18:58,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:18:58,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 03:18:59,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:18:59,029 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-16 03:18:59,101 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 03:18:59,105 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 23 treesize of output 22 [2021-10-16 03:18:59,224 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 03:18:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:18:59,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:01,322 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_update_at_~head.base) (bvadd (_ bv4 32) c_ULTIMATE.start_sll_update_at_~head.offset)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_sll_update_at_~head.offset_19 ULTIMATE.start_sll_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-16 03:19:03,337 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_sll_update_at_~head.offset_19 ULTIMATE.start_sll_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) is different from false [2021-10-16 03:19:03,359 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 110 treesize of output 106 [2021-10-16 03:19:03,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:03,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-16 03:19:03,642 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 18 treesize of output 16 [2021-10-16 03:19:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-16 03:19:03,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032372092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:19:03,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439558658] [2021-10-16 03:19:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:03,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:03,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:03,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 03:19:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:04,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-16 03:19:04,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:04,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:19:04,105 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:19:04,106 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 03:19:04,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 03:19:04,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:19:04,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 03:19:04,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:19:04,435 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-10-16 03:19:04,490 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 03:19:04,491 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 23 treesize of output 22 [2021-10-16 03:19:04,584 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 03:19:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:04,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:06,867 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 210 treesize of output 202 [2021-10-16 03:19:06,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:06,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-16 03:19:07,401 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 18 treesize of output 16 [2021-10-16 03:19:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 03:19:07,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439558658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:19:07,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:19:07,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20, 19, 20, 19] total 39 [2021-10-16 03:19:07,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099090489] [2021-10-16 03:19:07,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-16 03:19:07,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:19:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-16 03:19:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1145, Unknown=10, NotChecked=210, Total=1482 [2021-10-16 03:19:07,465 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:06,104 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2021-10-16 03:20:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-16 03:20:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 32 [2021-10-16 03:20:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:06,106 INFO L225 Difference]: With dead ends: 76 [2021-10-16 03:20:06,106 INFO L226 Difference]: Without dead ends: 74 [2021-10-16 03:20:06,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 43836.9ms TimeCoverageRelationStatistics Valid=509, Invalid=2685, Unknown=10, NotChecked=336, Total=3540 [2021-10-16 03:20:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-16 03:20:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2021-10-16 03:20:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-10-16 03:20:06,121 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 32 [2021-10-16 03:20:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:06,122 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-10-16 03:20:06,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-10-16 03:20:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 03:20:06,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:06,124 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:06,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-16 03:20:06,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:06,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:06,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2113051981, now seen corresponding path program 1 times [2021-10-16 03:20:06,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:06,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677096285] [2021-10-16 03:20:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:06,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:06,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:06,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:20:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:07,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:20:07,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:07,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:07,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:07,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677096285] [2021-10-16 03:20:07,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677096285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:07,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:07,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:20:07,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155552944] [2021-10-16 03:20:07,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:20:07,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:20:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:20:07,224 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:07,294 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-16 03:20:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:20:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 03:20:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:07,296 INFO L225 Difference]: With dead ends: 66 [2021-10-16 03:20:07,296 INFO L226 Difference]: Without dead ends: 58 [2021-10-16 03:20:07,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:20:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-16 03:20:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-10-16 03:20:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-10-16 03:20:07,309 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 33 [2021-10-16 03:20:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-10-16 03:20:07,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-10-16 03:20:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 03:20:07,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:07,311 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 03:20:07,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:07,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:20:07,526 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash -66723983, now seen corresponding path program 2 times [2021-10-16 03:20:07,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:07,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744926016] [2021-10-16 03:20:07,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:20:07,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:07,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:07,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:07,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:20:07,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:20:07,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:07,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:20:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:07,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:08,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:08,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744926016] [2021-10-16 03:20:08,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744926016] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:08,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [985463822] [2021-10-16 03:20:08,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:20:08,134 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:08,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:20:08,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:20:08,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 03:20:08,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:20:08,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:08,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:20:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:08,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:08,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [985463822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:08,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694489321] [2021-10-16 03:20:08,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:20:08,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:08,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 03:20:09,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:20:09,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:09,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:20:09,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:09,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:20:09,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694489321] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:09,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:20:09,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-16 03:20:09,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369670393] [2021-10-16 03:20:09,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:20:09,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:09,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:20:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:20:09,563 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 03:20:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:10,416 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2021-10-16 03:20:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 03:20:10,417 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 33 [2021-10-16 03:20:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:10,418 INFO L225 Difference]: With dead ends: 143 [2021-10-16 03:20:10,418 INFO L226 Difference]: Without dead ends: 123 [2021-10-16 03:20:10,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 774.4ms TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-10-16 03:20:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-16 03:20:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 55. [2021-10-16 03:20:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-16 03:20:10,451 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 33 [2021-10-16 03:20:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:10,451 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-16 03:20:10,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 03:20:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-16 03:20:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 03:20:10,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:10,454 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:10,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:10,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:10,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:11,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:11,060 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:11,061 INFO L82 PathProgramCache]: Analyzing trace with hash 655990325, now seen corresponding path program 1 times [2021-10-16 03:20:11,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:11,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908196203] [2021-10-16 03:20:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:11,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:11,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:11,079 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:11,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:20:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:11,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:11,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:11,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:11,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908196203] [2021-10-16 03:20:11,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908196203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:11,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1718173559] [2021-10-16 03:20:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:11,690 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:20:11,691 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:20:11,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 03:20:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:12,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:12,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:12,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:12,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1718173559] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:12,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887936594] [2021-10-16 03:20:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:12,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:12,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:12,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:12,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 03:20:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:12,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:12,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:13,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-16 03:20:13,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887936594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:13,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:20:13,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 03:20:13,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322493806] [2021-10-16 03:20:13,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:20:13,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:20:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:20:13,113 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:13,286 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2021-10-16 03:20:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:20:13,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-10-16 03:20:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:13,289 INFO L225 Difference]: With dead ends: 80 [2021-10-16 03:20:13,289 INFO L226 Difference]: Without dead ends: 72 [2021-10-16 03:20:13,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:20:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-16 03:20:13,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2021-10-16 03:20:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-10-16 03:20:13,307 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 38 [2021-10-16 03:20:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:13,308 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-10-16 03:20:13,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-10-16 03:20:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 03:20:13,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:13,310 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:13,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:13,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:13,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:13,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:20:13,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:13,917 INFO L82 PathProgramCache]: Analyzing trace with hash -137671404, now seen corresponding path program 3 times [2021-10-16 03:20:13,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:13,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721724142] [2021-10-16 03:20:13,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:20:13,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:13,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:13,919 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:13,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 03:20:14,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:20:14,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:14,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:14,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:20:14,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:20:14,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:14,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721724142] [2021-10-16 03:20:14,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721724142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:14,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1561677154] [2021-10-16 03:20:14,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:20:14,800 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:14,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:20:14,801 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:20:14,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 03:20:15,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:20:15,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:15,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:15,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:20:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:20:15,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1561677154] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:15,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670214069] [2021-10-16 03:20:15,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:20:15,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:15,752 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:15,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 03:20:17,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 03:20:17,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:20:17,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:20:17,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:20:17,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:20:18,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670214069] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:18,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:20:18,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 9] total 17 [2021-10-16 03:20:18,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693046914] [2021-10-16 03:20:18,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 03:20:18,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 03:20:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-16 03:20:18,191 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:18,357 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-10-16 03:20:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:20:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 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) Word has length 38 [2021-10-16 03:20:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:18,359 INFO L225 Difference]: With dead ends: 67 [2021-10-16 03:20:18,359 INFO L226 Difference]: Without dead ends: 40 [2021-10-16 03:20:18,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 449.9ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-16 03:20:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-16 03:20:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-16 03:20:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-16 03:20:18,372 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2021-10-16 03:20:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:18,374 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-16 03:20:18,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-10-16 03:20:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 03:20:18,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:18,379 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 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 03:20:18,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:18,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:18,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-16 03:20:18,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:20:18,997 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1087482302, now seen corresponding path program 1 times [2021-10-16 03:20:18,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:18,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831303170] [2021-10-16 03:20:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:18,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:19,001 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:19,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 03:20:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:19,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-16 03:20:19,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:19,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:20:19,632 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:20:19,633 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 03:20:19,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 03:20:20,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 03:20:20,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:20:20,331 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-16 03:20:20,332 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 87 [2021-10-16 03:20:20,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2021-10-16 03:20:20,353 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 03:20:20,354 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2021-10-16 03:20:20,857 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 38 treesize of output 26 [2021-10-16 03:20:20,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-16 03:20:20,904 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 03:20:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:20,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:21,417 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 100 treesize of output 84 [2021-10-16 03:20:21,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:21,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-16 03:20:21,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:21,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-16 03:20:21,671 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 41 treesize of output 35 [2021-10-16 03:20:21,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:21,700 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 70 treesize of output 55 [2021-10-16 03:20:23,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:23,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-16 03:20:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:24,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:24,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831303170] [2021-10-16 03:20:24,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831303170] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:24,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224883593] [2021-10-16 03:20:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:24,688 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:20:24,690 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:20:24,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 03:20:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:25,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-16 03:20:25,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:25,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 03:20:26,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 03:20:26,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-16 03:20:26,883 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-10-16 03:20:26,883 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 89 [2021-10-16 03:20:26,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2021-10-16 03:20:26,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:20:26,910 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-16 03:20:26,910 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 55 [2021-10-16 03:20:28,374 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 67 treesize of output 55 [2021-10-16 03:20:28,380 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 52 treesize of output 36 [2021-10-16 03:20:28,567 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:20:28,567 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 37 treesize of output 21 [2021-10-16 03:20:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:28,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:29,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:29,616 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 130 treesize of output 133 [2021-10-16 03:20:29,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:29,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-10-16 03:20:29,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:29,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-16 03:20:31,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:31,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-16 03:20:31,137 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 589 treesize of output 499 [2021-10-16 03:20:31,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:31,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 545 [2021-10-16 03:20:33,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-10-16 03:20:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1224883593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58582403] [2021-10-16 03:20:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:34,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:34,188 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:34,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 03:20:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-16 03:20:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 03:20:35,038 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 03:20:35,038 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 03:20:35,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-16 03:20:35,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-10-16 03:20:35,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-16 03:20:35,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:20:35,641 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-10-16 03:20:35,641 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 87 [2021-10-16 03:20:35,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2021-10-16 03:20:35,667 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-16 03:20:35,667 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 53 [2021-10-16 03:20:36,068 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 38 treesize of output 26 [2021-10-16 03:20:36,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-16 03:20:36,101 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 03:20:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:36,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:37,306 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 100 treesize of output 84 [2021-10-16 03:20:37,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:37,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-16 03:20:37,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:37,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-16 03:20:38,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:38,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-16 03:20:38,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:38,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-16 03:20:38,929 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 388 treesize of output 340 [2021-10-16 03:20:40,480 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 18 treesize of output 16 [2021-10-16 03:20:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:41,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58582403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:41,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:20:41,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 26, 26, 22, 22] total 99 [2021-10-16 03:20:41,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944034103] [2021-10-16 03:20:41,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-16 03:20:41,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-16 03:20:41,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=9177, Unknown=0, NotChecked=0, Total=9702 [2021-10-16 03:20:41,257 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:03,322 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-10-16 03:21:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-16 03:21:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 0 states have call successors, (0), 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 39 [2021-10-16 03:21:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:03,324 INFO L225 Difference]: With dead ends: 53 [2021-10-16 03:21:03,324 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 03:21:03,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5036 ImplicationChecksByTransitivity, 30283.0ms TimeCoverageRelationStatistics Valid=2275, Invalid=14755, Unknown=0, NotChecked=0, Total=17030 [2021-10-16 03:21:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 03:21:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-16 03:21:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-10-16 03:21:03,342 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2021-10-16 03:21:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:03,343 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-10-16 03:21:03,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.7676767676767677) internal successors, (175), 99 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-10-16 03:21:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-16 03:21:03,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:03,344 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:03,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:03,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:03,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:03,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:03,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:03,970 INFO L82 PathProgramCache]: Analyzing trace with hash 259492002, now seen corresponding path program 2 times [2021-10-16 03:21:03,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:03,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445076529] [2021-10-16 03:21:03,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:21:03,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:03,981 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:03,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 03:21:04,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:21:04,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:21:04,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:21:04,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:04,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:04,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:04,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445076529] [2021-10-16 03:21:04,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445076529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:04,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [559098346] [2021-10-16 03:21:04,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:21:04,907 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:21:04,908 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:21:04,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 03:21:05,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:21:05,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:21:05,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:21:05,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:06,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [559098346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:06,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328717691] [2021-10-16 03:21:06,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:21:06,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:21:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:06,036 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:21:06,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 03:21:06,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:21:06,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:21:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 03:21:06,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:06,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:21:07,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328717691] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:07,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:21:07,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-16 03:21:07,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367198839] [2021-10-16 03:21:07,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:21:07,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:21:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:21:07,022 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:07,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:07,110 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-10-16 03:21:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:21:07,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-16 03:21:07,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:07,112 INFO L225 Difference]: With dead ends: 42 [2021-10-16 03:21:07,112 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:21:07,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:21:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:21:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:21:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:21:07,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-16 03:21:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:07,113 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:21:07,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:21:07,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:21:07,116 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:21:07,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:07,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:07,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:07,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:07,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:21:07,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:07,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:07,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:07,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:07,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:08,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:48,775 WARN L207 SmtUtils]: Spent 34.15 s on a formula simplification. DAG size of input: 138 DAG size of output: 101 [2021-10-16 03:21:59,732 WARN L207 SmtUtils]: Spent 10.96 s on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2021-10-16 03:21:59,735 INFO L860 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-10-16 03:21:59,735 INFO L857 garLoopResultBuilder]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2021-10-16 03:21:59,735 INFO L853 garLoopResultBuilder]: At program point L622-3(lines 622 627) the Hoare annotation is: (let ((.cse29 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse25 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse30 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse24 (= ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse10 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse7 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse5 (select .cse25 .cse30)) (.cse26 (select .cse29 .cse30)) (.cse28 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse6 (select .cse29 (_ bv4 32)))) (let ((.cse0 (= .cse6 (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse2 (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) (.cse9 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse11 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse28) ULTIMATE.start_sll_create_~head~0.base))) (.cse12 (= .cse26 ULTIMATE.start_sll_update_at_~head.offset)) (.cse13 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse28) (_ bv0 32))) (.cse14 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse17 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse18 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse20 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse21 (= ULTIMATE.start_sll_update_at_~head.base .cse5)) (.cse22 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse23 (= .cse7 ULTIMATE.start_sll_update_at_~data)) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (not (bvsgt ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)))) (.cse8 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse15 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse16 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32)))) (.cse19 (let ((.cse27 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse24 .cse27) (and .cse10 .cse27))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse3 .cse4 (= (select (select |#memory_int| .cse5) .cse6) .cse7) .cse8 (= ULTIMATE.start_main_~expected~0 |ULTIMATE.start_sll_get_data_at_#res|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= ULTIMATE.start_main_~expected~0 (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset)) .cse16 .cse17 .cse18 .cse19 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)) .cse20 .cse21 .cse22 .cse23) (and .cse0 .cse1 .cse2 .cse3 .cse8 .cse24 .cse9 .cse11 .cse12 .cse13 .cse14 .cse15 .cse17 .cse18 .cse19 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse20 .cse21 (= (select (select |#memory_int| (select .cse25 (_ bv4 32))) .cse26) .cse7) .cse22 .cse23) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse3 .cse4 .cse8 .cse10 .cse15 .cse16 .cse19))))) [2021-10-16 03:21:59,735 INFO L857 garLoopResultBuilder]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2021-10-16 03:21:59,736 INFO L853 garLoopResultBuilder]: At program point L581(lines 574 582) the Hoare annotation is: (let ((.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse3 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse4 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse5 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (_ bv0 32)) .cse2 .cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1))) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_create_~head~0.base)) .cse4 (not (= ULTIMATE.start_sll_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)) .cse5 (bvsgt ULTIMATE.start_sll_create_~len (_ bv0 32))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_sll_create_~len (_ bv2 32)) .cse5))) [2021-10-16 03:21:59,736 INFO L857 garLoopResultBuilder]: For program point L606(lines 1 632) no Hoare annotation was computed. [2021-10-16 03:21:59,736 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:21:59,736 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:21:59,736 INFO L860 garLoopResultBuilder]: At program point L631(lines 613 632) the Hoare annotation is: true [2021-10-16 03:21:59,737 INFO L853 garLoopResultBuilder]: At program point L590(lines 583 591) the Hoare annotation is: (let ((.cse0 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32)) (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse0) ULTIMATE.start_sll_create_~head~0.base)) (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse0) (_ bv0 32)) (= ULTIMATE.start_main_~len~0 (_ bv2 32)) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1))) (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32)) (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)))) (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32)) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) [2021-10-16 03:21:59,737 INFO L853 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse24 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse18 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse8 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base))) (let ((.cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse20 (= (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)) ULTIMATE.start_sll_update_at_~data)) (.cse0 (= (select .cse8 (_ bv4 32)) (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse21 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_update_at_~head.offset)) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse5 (not (= ULTIMATE.start_main_~s~0.base (select .cse18 (_ bv4 32))))) (.cse6 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse7 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse24) ULTIMATE.start_sll_create_~head~0.base))) (.cse10 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse24) (_ bv0 32))) (.cse11 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse12 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse13 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse14 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse15 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse16 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index)) (.cse23 (= ULTIMATE.start_sll_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse17 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse19 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (let ((.cse9 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (select .cse8 .cse9) ULTIMATE.start_sll_update_at_~head.offset) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_update_at_~head.offset (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (store |#memory_int| ULTIMATE.start_sll_update_at_~head.base (store (select |#memory_int| ULTIMATE.start_sll_update_at_~head.base) ULTIMATE.start_sll_update_at_~head.offset ULTIMATE.start_sll_update_at_~data)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse17 (= ULTIMATE.start_sll_update_at_~head.base (select .cse18 .cse9)) .cse19 .cse20)) (and .cse0 .cse1 .cse21 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse10 .cse11 .cse12 .cse13 .cse14 (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_19 (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (let ((.cse22 (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_update_at_~head.offset)))) (store |#memory_int| .cse22 (store (select |#memory_int| .cse22) v_ULTIMATE.start_sll_update_at_~head.offset_19 ULTIMATE.start_sll_update_at_~data))) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse15 (= (_ bv1 32) ULTIMATE.start_sll_update_at_~index) .cse23 .cse17 .cse19 .cse20) (and .cse0 .cse1 .cse21 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse6 .cse7 .cse10 .cse11 .cse12 .cse13 (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_update_at_~data) .cse14 .cse15 .cse16 .cse23 .cse17 .cse19)))) [2021-10-16 03:21:59,737 INFO L857 garLoopResultBuilder]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2021-10-16 03:21:59,738 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 626) no Hoare annotation was computed. [2021-10-16 03:21:59,738 INFO L853 garLoopResultBuilder]: At program point L600-2(lines 600 603) the Hoare annotation is: (let ((.cse30 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse36 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse37 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse28 (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base)) (.cse31 (select .cse36 .cse37)) (.cse34 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse3 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse33 (select .cse30 .cse37)) (.cse35 (select .cse36 (_ bv4 32))) (.cse32 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (let ((.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse2 (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) (.cse5 (= (select (select |#memory_int| .cse33) .cse35) .cse32)) (.cse18 (or .cse3 (= ULTIMATE.start_main_~i~0 (_ bv0 32)))) (.cse19 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32)))) (.cse0 (= .cse35 (_ bv0 32))) (.cse4 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse6 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse7 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse10 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse34) ULTIMATE.start_sll_create_~head~0.base))) (.cse11 (= .cse31 ULTIMATE.start_sll_update_at_~head.offset)) (.cse12 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse34) (_ bv0 32))) (.cse14 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32))) (.cse15 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse16 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse17 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse20 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse21 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse29 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (.cse26 (select .cse28 (_ bv0 32))) (.cse22 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse23 (= ULTIMATE.start_sll_update_at_~head.base .cse33)) (.cse24 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse25 (= .cse32 ULTIMATE.start_sll_update_at_~data))) (or (let ((.cse13 (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32)))) (let ((.cse8 (bvadd .cse26 (_ bv1 32))) (.cse9 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_get_data_at_~head.base) (_ bv4 32))) .cse13))) (and .cse0 (= ULTIMATE.start_sll_get_data_at_~index (_ bv1 32)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= .cse8 .cse9) (= .cse8 ULTIMATE.start_main_~expected~0) .cse10 .cse11 .cse12 (= .cse13 (_ bv0 32)) .cse14 .cse15 (= (_ bv3 32) .cse9) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25))) (and (exists ((v_ULTIMATE.start_sll_get_data_at_~head.base_33 (_ BitVec 32))) (let ((.cse27 (bvadd (_ bv1 32) (select (select |#memory_int| v_ULTIMATE.start_sll_get_data_at_~head.base_33) (_ bv0 32))))) (and (= ULTIMATE.start_main_~expected~0 .cse27) (= (select (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base) ULTIMATE.start_sll_get_data_at_~head.offset) .cse27)))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse10 .cse11 .cse12 (= (_ bv3 32) (select .cse28 ULTIMATE.start_sll_get_data_at_~head.offset)) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse29 .cse22 .cse23 .cse24 .cse25) (and .cse0 .cse4 .cse6 .cse7 .cse10 (= ULTIMATE.start_sll_get_data_at_~head.base ULTIMATE.start_main_~s~0.base) .cse11 .cse12 .cse14 .cse15 (= ULTIMATE.start_main_~expected~0 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_get_data_at_~head.offset) .cse16 .cse17 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse20 .cse21 .cse29 (= (_ bv2 32) .cse26) (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) .cse22 .cse23 (= (select (select |#memory_int| (select .cse30 (_ bv4 32))) .cse31) .cse32) .cse24 .cse25))))) [2021-10-16 03:21:59,738 INFO L857 garLoopResultBuilder]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2021-10-16 03:21:59,739 INFO L853 garLoopResultBuilder]: At program point L625(lines 613 632) the Hoare annotation is: false [2021-10-16 03:21:59,739 INFO L857 garLoopResultBuilder]: For program point L592(lines 592 598) no Hoare annotation was computed. [2021-10-16 03:21:59,739 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-10-16 03:21:59,739 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2021-10-16 03:21:59,739 INFO L860 garLoopResultBuilder]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2021-10-16 03:21:59,740 INFO L853 garLoopResultBuilder]: At program point L618-2(lines 618 621) the Hoare annotation is: (let ((.cse18 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base))) (let ((.cse23 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse22 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse20 (select .cse18 (_ bv4 32)))) (let ((.cse4 (not (= ULTIMATE.start_main_~s~0.base .cse20))) (.cse0 (= (select .cse22 (_ bv4 32)) (_ bv0 32))) (.cse1 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32))) (.cse2 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse3 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse5 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse6 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse23) ULTIMATE.start_sll_create_~head~0.base))) (.cse7 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse23) (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse9 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse10 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse11 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse12 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse16 (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index)) (.cse13 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse14 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse2 .cse3 .cse4 .cse5 .cse6 (forall ((ULTIMATE.start_sll_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_update_at_~head.offset_14 (_ BitVec 32))) (= (select (select (let ((.cse15 (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_update_at_~head.offset)))) (store |#memory_int| .cse15 (store (select |#memory_int| .cse15) v_ULTIMATE.start_sll_update_at_~head.offset_14 ULTIMATE.start_sll_update_at_~data))) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse16 .cse13 .cse14) (let ((.cse19 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse17 (select .cse22 .cse19)) (.cse21 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (and .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0) .cse2 .cse3 .cse5 .cse6 (= .cse17 ULTIMATE.start_sll_update_at_~head.offset) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse16 .cse13 (= ULTIMATE.start_sll_update_at_~head.base (select .cse18 .cse19)) (= (select (select |#memory_int| .cse20) .cse17) .cse21) .cse14 (= .cse21 ULTIMATE.start_sll_update_at_~data)))))))) [2021-10-16 03:21:59,740 INFO L857 garLoopResultBuilder]: For program point L585-2(lines 585 589) no Hoare annotation was computed. [2021-10-16 03:21:59,740 INFO L857 garLoopResultBuilder]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2021-10-16 03:21:59,741 INFO L853 garLoopResultBuilder]: At program point L585-3(lines 585 589) the Hoare annotation is: (let ((.cse8 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset))) (let ((.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse8) (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse4 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse5 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse6 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse7 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (bvsgt ULTIMATE.start_sll_create_~len (_ bv0 32))) (and .cse3 .cse6 (= ULTIMATE.start_sll_create_~len (_ bv2 32))) (and .cse0 .cse1 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse8) ULTIMATE.start_sll_create_~head~0.base)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7)))) [2021-10-16 03:21:59,741 INFO L857 garLoopResultBuilder]: For program point L585-4(lines 585 589) no Hoare annotation was computed. [2021-10-16 03:21:59,741 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:21:59,741 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2021-10-16 03:21:59,741 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:21:59,742 INFO L853 garLoopResultBuilder]: At program point L604(lines 599 605) the Hoare annotation is: (let ((.cse23 (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base)) (.cse20 (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base)) (.cse24 (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (let ((.cse4 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse2 (select .cse20 .cse24)) (.cse21 (select .cse23 .cse24)) (.cse22 (bvadd (_ bv4 32) ULTIMATE.start_sll_create_~head~0.offset)) (.cse3 (select .cse23 (_ bv4 32)))) (let ((.cse0 (= .cse3 (_ bv0 32))) (.cse1 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse5 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse6 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32)) (_ bv0 32))) (.cse7 (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_create_~head~0.base) .cse22) ULTIMATE.start_sll_create_~head~0.base))) (.cse8 (= .cse21 ULTIMATE.start_sll_update_at_~head.offset)) (.cse9 (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_create_~head~0.base) .cse22) (_ bv0 32))) (.cse11 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse12 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse13 (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_create_~head~0.base)))) (_ bv1 1)))) (.cse14 (= ULTIMATE.start_sll_create_~head~0.offset (_ bv0 32))) (.cse15 (not (= |ULTIMATE.start_sll_create_#res.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_#res.base|) (_ bv4 32))))) (.cse10 (select |#memory_int| ULTIMATE.start_sll_get_data_at_~head.base)) (.cse16 (= |ULTIMATE.start_sll_create_#res.offset| (_ bv0 32))) (.cse17 (= ULTIMATE.start_sll_update_at_~head.base .cse2)) (.cse18 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset)) (.cse19 (= .cse4 ULTIMATE.start_sll_update_at_~data))) (or (and .cse0 (= ULTIMATE.start_main_~s~0.offset (_ bv0 32)) (= (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~len~0) (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse1 (not (bvsgt ULTIMATE.start_sll_get_data_at_~index (_ bv0 32))) (= (select (select |#memory_int| .cse2) .cse3) .cse4) (= ULTIMATE.start_main_~expected~0 (_ bv3 32)) .cse5 .cse6 .cse7 .cse8 (= (_ bv3 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse9 (= (_ bv3 32) (select .cse10 ULTIMATE.start_sll_get_data_at_~head.offset)) .cse11 .cse12 .cse13 (not (bvsgt ULTIMATE.start_sll_update_at_~index (_ bv0 32))) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse5 .cse6 .cse7 (= ULTIMATE.start_sll_get_data_at_~head.base ULTIMATE.start_main_~s~0.base) .cse8 .cse9 (= ULTIMATE.start_sll_get_data_at_~head.offset (_ bv0 32)) .cse11 (= ULTIMATE.start_main_~expected~0 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_get_data_at_~head.offset) .cse12 .cse13 (= ULTIMATE.start_main_~expected~0 (_ bv2 32)) .cse14 .cse15 (= ULTIMATE.start_sll_get_data_at_~index (_ bv0 32)) (= (_ bv2 32) (select .cse10 (_ bv0 32))) (= (_ bv0 32) ULTIMATE.start_sll_update_at_~index) (= (_ bv2 32) |ULTIMATE.start_sll_get_data_at_#res|) .cse16 .cse17 (= (select (select |#memory_int| (select .cse20 (_ bv4 32))) .cse21) .cse4) .cse18 .cse19))))) [2021-10-16 03:21:59,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:21:59,756 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:21:59,760 INFO L168 Benchmark]: Toolchain (without parser) took 213489.54 ms. Allocated memory was 52.4 MB in the beginning and 136.3 MB in the end (delta: 83.9 MB). Free memory was 28.2 MB in the beginning and 41.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 90.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,761 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:59,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.18 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 38.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.82 ms. Allocated memory is still 62.9 MB. Free memory was 38.6 MB in the beginning and 36.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,762 INFO L168 Benchmark]: Boogie Preprocessor took 67.62 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 34.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,763 INFO L168 Benchmark]: RCFGBuilder took 631.34 ms. Allocated memory is still 62.9 MB. Free memory was 34.5 MB in the beginning and 33.8 MB in the end (delta: 741.7 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,763 INFO L168 Benchmark]: TraceAbstraction took 212044.71 ms. Allocated memory was 62.9 MB in the beginning and 136.3 MB in the end (delta: 73.4 MB). Free memory was 33.2 MB in the beginning and 41.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 86.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:59,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 633.18 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 38.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.82 ms. Allocated memory is still 62.9 MB. Free memory was 38.6 MB in the beginning and 36.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.62 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 34.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 631.34 ms. Allocated memory is still 62.9 MB. Free memory was 34.5 MB in the beginning and 33.8 MB in the end (delta: 741.7 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 212044.71 ms. Allocated memory was 62.9 MB in the beginning and 136.3 MB in the end (delta: 73.4 MB). Free memory was 33.2 MB in the beginning and 41.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 86.3 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 - PositiveResult [Line: 630]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 211953.2ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 30.5ms, AutomataDifference: 82459.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 52009.3ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 257 SDtfs, 1487 SDslu, 1089 SDs, 0 SdLazy, 2148 SolverSat, 559 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 50902.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1707 GetRequests, 1429 SyntacticMatches, 6 SemanticMatches, 272 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5970 ImplicationChecksByTransitivity, 75718.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 152.4ms AutomataMinimizationTime, 11 MinimizatonAttempts, 151 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 33 NumberOfFragments, 2317 HoareAnnotationTreeSize, 12 FomulaSimplifications, 62388 FormulaSimplificationTreeSizeReduction, 509.9ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 24636 FormulaSimplificationTreeSizeReductionInter, 51489.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 394.1ms SsaConstructionTime, 3222.0ms SatisfiabilityAnalysisTime, 60228.8ms InterpolantComputationTime, 838 NumberOfCodeBlocks, 835 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1626 ConstructedInterpolants, 66 QuantifiedInterpolants, 9778 SizeOfPredicates, 295 NumberOfNonLiveVariables, 3253 ConjunctsInSsa, 395 ConjunctsInUnsatCore, 50 InterpolantComputations, 8 PerfectInterpolantSequences, 626/952 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:21:59,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f40f3f2e-439f-4224-a0a2-d75ee814b046/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...