./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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 5b8a3c71378af91196ed2f84e64deb923f93cbb4 ............................................................................................................................................................................................................................................................................................................................................................................................................ 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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 5b8a3c71378af91196ed2f84e64deb923f93cbb4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:59:57,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:57,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:57,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:57,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:57,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:57,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:57,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:57,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:57,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:57,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:57,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:57,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:57,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:57,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:57,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:57,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:57,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:57,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:57,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:57,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:57,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:57,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:57,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:57,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:57,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:57,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:57,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:57,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:57,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:57,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:57,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:57,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:57,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:57,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:57,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:57,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:57,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:57,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:57,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:57,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:57,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:57,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:57,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:57,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:57,905 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:57,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:57,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:57,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:57,907 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:57,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:57,908 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:57,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:57,913 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:57,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:57,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:57,914 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:57,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:57,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:57,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:57,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:57,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:57,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:57,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:57,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:57,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:57,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:57,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:57,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:57,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:57,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:57,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:57,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:57,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:57,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:57,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:57,923 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:57,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:57,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:57,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:57,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:57,925 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b8a3c71378af91196ed2f84e64deb923f93cbb4 [2021-10-16 01:59:58,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:58,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:58,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:58,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:58,357 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:58,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-16 01:59:58,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/67d5df93c/e2a1b1cfbcc149eaba7a53f8b4b68e09/FLAG882308240 [2021-10-16 01:59:59,123 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:59,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-16 01:59:59,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/67d5df93c/e2a1b1cfbcc149eaba7a53f8b4b68e09/FLAG882308240 [2021-10-16 01:59:59,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/67d5df93c/e2a1b1cfbcc149eaba7a53f8b4b68e09 [2021-10-16 01:59:59,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:59,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:59,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:59,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:59,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:59,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:59" (1/1) ... [2021-10-16 01:59:59,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4158235f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59, skipping insertion in model container [2021-10-16 01:59:59,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:59" (1/1) ... [2021-10-16 01:59:59,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:59,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:59,845 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-16 01:59:59,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:59,860 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:59,913 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-16 01:59:59,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:59,952 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:59,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59 WrapperNode [2021-10-16 01:59:59,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:59,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:59,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:59,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:59,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 01:59:59,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:00:00,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:00:00,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:00:00,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:00:00,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:00:00,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:00:00,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:00:00,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:00:00,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (1/1) ... [2021-10-16 02:00:00,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:00:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:00,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:00:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:00:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:00:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:00:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:00:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:00:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:00:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:00:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:00:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:00:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:00:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:00:01,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:00:01,064 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 02:00:01,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:01 BoogieIcfgContainer [2021-10-16 02:00:01,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:00:01,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:00:01,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:00:01,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:00:01,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:59" (1/3) ... [2021-10-16 02:00:01,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c6b0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:01, skipping insertion in model container [2021-10-16 02:00:01,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:59" (2/3) ... [2021-10-16 02:00:01,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c6b0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:01, skipping insertion in model container [2021-10-16 02:00:01,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:01" (3/3) ... [2021-10-16 02:00:01,079 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2021-10-16 02:00:01,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:00:01,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:00:01,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:00:01,158 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 02:00:01,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:00:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 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 02:00:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:00:01,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:01,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:01,185 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:01,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1750896396, now seen corresponding path program 1 times [2021-10-16 02:00:01,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:00:01,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228116623] [2021-10-16 02:00:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:00:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:00:01,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228116623] [2021-10-16 02:00:01,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228116623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:01,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:00:01,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240697181] [2021-10-16 02:00:01,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:00:01,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:00:01,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:00:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:00:01,497 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:01,546 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2021-10-16 02:00:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:00:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:00:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:01,559 INFO L225 Difference]: With dead ends: 33 [2021-10-16 02:00:01,559 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:00:01,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:00:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:00:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-16 02:00:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-16 02:00:01,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2021-10-16 02:00:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:01,603 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-16 02:00:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-10-16 02:00:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:00:01,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:01,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:01,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:00:01,607 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 323590111, now seen corresponding path program 1 times [2021-10-16 02:00:01,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:00:01,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782073304] [2021-10-16 02:00:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:00:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:01,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:00:01,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782073304] [2021-10-16 02:00:01,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782073304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:01,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:01,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:00:01,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235793555] [2021-10-16 02:00:01,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:00:01,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:00:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:00:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:00:01,755 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:01,789 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2021-10-16 02:00:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:00:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:00:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:01,792 INFO L225 Difference]: With dead ends: 24 [2021-10-16 02:00:01,792 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 02:00:01,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:00:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 02:00:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-16 02:00:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-16 02:00:01,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-10-16 02:00:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:01,801 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-16 02:00:01,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-10-16 02:00:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:00:01,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:01,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:01,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:00:01,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1526021095, now seen corresponding path program 1 times [2021-10-16 02:00:01,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:00:01,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916741533] [2021-10-16 02:00:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:00:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:01,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:00:01,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916741533] [2021-10-16 02:00:01,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916741533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:00:01,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217754307] [2021-10-16 02:00:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:01,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:01,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:00:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:02,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:00:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:02,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:02,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217754307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:02,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569607166] [2021-10-16 02:00:02,490 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 02:00:02,490 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:00:02,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:00:02,503 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:00:02,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:00:02,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,561 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:00:02,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:00:02,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:00:02,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:00:02,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-16 02:00:02,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:02,670 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:00:02,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-10-16 02:00:02,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-16 02:00:02,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-16 02:00:02,684 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:00:02,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:02,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:02,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-16 02:00:02,756 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:00:02,756 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:116 [2021-10-16 02:00:02,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:02,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:02,959 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_15| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:00:02,963 INFO L168 Benchmark]: Toolchain (without parser) took 3595.31 ms. Allocated memory is still 136.3 MB. Free memory was 99.2 MB in the beginning and 83.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:02,966 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 136.3 MB. Free memory was 109.7 MB in the beginning and 109.7 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:02,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.64 ms. Allocated memory is still 136.3 MB. Free memory was 98.9 MB in the beginning and 104.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:02,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.13 ms. Allocated memory is still 136.3 MB. Free memory was 104.5 MB in the beginning and 102.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:02,968 INFO L168 Benchmark]: Boogie Preprocessor took 70.06 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 100.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:02,969 INFO L168 Benchmark]: RCFGBuilder took 963.12 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 79.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:02,970 INFO L168 Benchmark]: TraceAbstraction took 1891.98 ms. Allocated memory is still 136.3 MB. Free memory was 79.3 MB in the beginning and 83.5 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:02,974 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 136.3 MB. Free memory was 109.7 MB in the beginning and 109.7 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.64 ms. Allocated memory is still 136.3 MB. Free memory was 98.9 MB in the beginning and 104.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.13 ms. Allocated memory is still 136.3 MB. Free memory was 104.5 MB in the beginning and 102.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.06 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 100.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 963.12 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 79.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1891.98 ms. Allocated memory is still 136.3 MB. Free memory was 79.3 MB in the beginning and 83.5 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_15| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_15|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:00:03,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:00:06,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:00:06,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:00:06,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:00:06,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:00:06,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:00:06,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:00:06,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:00:06,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:00:06,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:00:06,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:00:06,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:00:06,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:00:06,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:00:06,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:00:06,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:00:06,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:00:06,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:00:06,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:00:06,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:00:06,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:00:06,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:00:06,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:00:06,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:00:06,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:00:06,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:00:06,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:00:06,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:00:06,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:00:06,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:00:06,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:00:06,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:00:06,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:00:06,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:00:06,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:00:06,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:00:06,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:00:06,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:00:06,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:00:06,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:00:06,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:00:06,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:00:06,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:00:06,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:00:06,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:00:06,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:00:06,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:00:06,187 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:00:06,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:00:06,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:00:06,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:00:06,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:00:06,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:00:06,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:00:06,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:00:06,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:00:06,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:00:06,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:00:06,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:00:06,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:00:06,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:00:06,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:00:06,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:00:06,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:00:06,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:00:06,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:00:06,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:00:06,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:00:06,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:00:06,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:00:06,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:00:06,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:00:06,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:00:06,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:06,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:00:06,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:00:06,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:00:06,199 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b8a3c71378af91196ed2f84e64deb923f93cbb4 [2021-10-16 02:00:06,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:00:06,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:00:06,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:00:06,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:00:06,736 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:00:06,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-16 02:00:06,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/5825259a7/7ad4d5744cb64fcd82e30aa51ad5671b/FLAGb884ab3b6 [2021-10-16 02:00:07,645 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:00:07,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i [2021-10-16 02:00:07,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/5825259a7/7ad4d5744cb64fcd82e30aa51ad5671b/FLAGb884ab3b6 [2021-10-16 02:00:07,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/data/5825259a7/7ad4d5744cb64fcd82e30aa51ad5671b [2021-10-16 02:00:07,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:00:07,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:00:07,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:00:07,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:00:07,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:00:07,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:00:07" (1/1) ... [2021-10-16 02:00:07,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bccd1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:07, skipping insertion in model container [2021-10-16 02:00:07,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:00:07" (1/1) ... [2021-10-16 02:00:07,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:00:07,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:00:08,461 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-16 02:00:08,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:00:08,498 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:00:08,566 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_55b2afbb-1f07-45c1-8253-fea26a20c3ca/sv-benchmarks/c/list-simple/sll2c_update_all.i[24418,24431] [2021-10-16 02:00:08,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:00:08,632 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:00:08,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08 WrapperNode [2021-10-16 02:00:08,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:00:08,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:00:08,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:00:08,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:00:08,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:00:08,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:00:08,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:00:08,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:00:08,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:00:08,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:00:08,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:00:08,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:00:08,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (1/1) ... [2021-10-16 02:00:08,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:00:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:08,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:00:08,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:00:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:00:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:00:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:00:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:00:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:00:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:00:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:00:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:00:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:00:08,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:00:09,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:00:09,537 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 02:00:09,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:09 BoogieIcfgContainer [2021-10-16 02:00:09,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:00:09,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:00:09,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:00:09,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:00:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:00:07" (1/3) ... [2021-10-16 02:00:09,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3339654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:09, skipping insertion in model container [2021-10-16 02:00:09,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:00:08" (2/3) ... [2021-10-16 02:00:09,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3339654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:09, skipping insertion in model container [2021-10-16 02:00:09,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:09" (3/3) ... [2021-10-16 02:00:09,549 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2021-10-16 02:00:09,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:00:09,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:00:09,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:00:09,625 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 02:00:09,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:00:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:00:09,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:09,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:09,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash 680767129, now seen corresponding path program 1 times [2021-10-16 02:00:09,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:09,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227963829] [2021-10-16 02:00:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:09,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:09,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:09,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:09,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:00:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:09,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:00:09,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:09,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:10,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:10,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227963829] [2021-10-16 02:00:10,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227963829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:10,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:10,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:00:10,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653625400] [2021-10-16 02:00:10,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:00:10,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:00:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:00:10,135 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:10,156 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2021-10-16 02:00:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:00:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:00:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:10,168 INFO L225 Difference]: With dead ends: 57 [2021-10-16 02:00:10,169 INFO L226 Difference]: Without dead ends: 24 [2021-10-16 02:00:10,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 02:00:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-16 02:00:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-16 02:00:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-16 02:00:10,208 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2021-10-16 02:00:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:10,209 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-16 02:00:10,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-16 02:00:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:00:10,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:10,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:10,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:10,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:10,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash 68282379, now seen corresponding path program 1 times [2021-10-16 02:00:10,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:10,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614291593] [2021-10-16 02:00:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:10,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:10,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:10,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:00:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:00:10,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:10,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:10,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:10,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614291593] [2021-10-16 02:00:10,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614291593] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:10,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:10,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:00:10,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67125488] [2021-10-16 02:00:10,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:00:10,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:00:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:00:10,812 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 02:00:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:10,865 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-10-16 02:00:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:00:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:00:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:10,868 INFO L225 Difference]: With dead ends: 43 [2021-10-16 02:00:10,869 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:00:10,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:00:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:00:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-16 02:00:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-16 02:00:10,887 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2021-10-16 02:00:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:10,889 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-16 02:00:10,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 02:00:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-16 02:00:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:00:10,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:10,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:10,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:11,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:11,115 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:11,116 INFO L82 PathProgramCache]: Analyzing trace with hash -301628989, now seen corresponding path program 1 times [2021-10-16 02:00:11,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:11,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975243979] [2021-10-16 02:00:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:11,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:11,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:11,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:00:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:00:11,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:11,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:11,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:11,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975243979] [2021-10-16 02:00:11,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975243979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:11,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:11,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:00:11,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751673757] [2021-10-16 02:00:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:00:11,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:00:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:00:11,671 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 02:00:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:11,788 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-10-16 02:00:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:00:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) Word has length 20 [2021-10-16 02:00:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:11,793 INFO L225 Difference]: With dead ends: 48 [2021-10-16 02:00:11,794 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 02:00:11,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:00:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 02:00:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2021-10-16 02:00:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-16 02:00:11,811 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2021-10-16 02:00:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:11,812 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-16 02:00:11,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 02:00:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-16 02:00:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:00:11,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:11,816 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:11,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:00:12,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:12,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1046019817, now seen corresponding path program 1 times [2021-10-16 02:00:12,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:12,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828526824] [2021-10-16 02:00:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:12,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:12,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:12,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:12,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:00:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:12,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:12,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:12,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:12,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828526824] [2021-10-16 02:00:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828526824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:12,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2073219277] [2021-10-16 02:00:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:12,538 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:12,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:12,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:00:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:12,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:12,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:12,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:13,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2073219277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:13,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115786910] [2021-10-16 02:00:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:13,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:13,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:13,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:00:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:13,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:13,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:13,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:00:13,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115786910] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:13,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:13,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 02:00:13,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466868852] [2021-10-16 02:00:13,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:00:13,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:00:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:00:13,513 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:13,725 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2021-10-16 02:00:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:00:13,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:00:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:13,728 INFO L225 Difference]: With dead ends: 67 [2021-10-16 02:00:13,728 INFO L226 Difference]: Without dead ends: 54 [2021-10-16 02:00:13,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:00:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-16 02:00:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2021-10-16 02:00:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-16 02:00:13,748 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 28 [2021-10-16 02:00:13,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:13,749 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-16 02:00:13,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-16 02:00:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:00:13,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:13,752 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:13,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:13,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:00:14,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:14,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:14,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:14,356 INFO L82 PathProgramCache]: Analyzing trace with hash -194998021, now seen corresponding path program 1 times [2021-10-16 02:00:14,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:14,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597543173] [2021-10-16 02:00:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:14,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:14,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:14,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:14,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:00:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:14,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-16 02:00:14,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:14,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:00:14,815 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:00:14,821 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 23 treesize of output 23 [2021-10-16 02:00:14,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:00:15,046 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:00:15,047 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 28 treesize of output 22 [2021-10-16 02:00:15,437 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 02:00:15,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:00:15,474 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:00:15,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-16 02:00:15,801 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:00:15,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-16 02:00:15,951 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:00:15,951 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 27 treesize of output 26 [2021-10-16 02:00:16,224 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 02:00:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:16,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:14,744 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 132 treesize of output 126 [2021-10-16 02:01:14,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:14,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-16 02:01:17,468 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd c_ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) is different from false [2021-10-16 02:01:17,546 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-16 02:01:17,546 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-10-16 02:01:17,580 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:17,581 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 40 treesize of output 42 [2021-10-16 02:01:17,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-10-16 02:01:17,705 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:17,705 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 51 treesize of output 53 [2021-10-16 02:01:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:01:18,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:18,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597543173] [2021-10-16 02:01:18,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597543173] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:01:18,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1661972146] [2021-10-16 02:01:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:18,123 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:01:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:01:18,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:01:18,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:01:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:18,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-16 02:01:18,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:18,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:01:18,952 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:01:18,953 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 17 treesize of output 17 [2021-10-16 02:01:19,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:01:19,438 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:01:19,438 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 28 treesize of output 22 [2021-10-16 02:01:20,091 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 02:01:20,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:01:20,128 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:01:20,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-16 02:01:20,660 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:01:20,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-16 02:01:20,879 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:01:20,880 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 27 treesize of output 26 [2021-10-16 02:01:21,381 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 22 treesize of output 10 [2021-10-16 02:01:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:21,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:23,729 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_update_at_~head.base) c_ULTIMATE.start_sll_circular_update_at_~head.offset))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_19) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) is different from false [2021-10-16 02:01:25,748 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_19) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) is different from false [2021-10-16 02:01:25,788 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 132 treesize of output 126 [2021-10-16 02:01:25,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:25,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-16 02:01:26,240 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-16 02:01:26,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-10-16 02:01:26,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:26,255 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 40 treesize of output 42 [2021-10-16 02:01:26,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-10-16 02:01:26,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:26,347 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 51 treesize of output 53 [2021-10-16 02:01:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-16 02:01:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1661972146] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:01:26,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67930711] [2021-10-16 02:01:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:26,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:01:26,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:01:26,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:01:26,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:01:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:26,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-16 02:01:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:26,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:01:27,348 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:01:27,348 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 19 treesize of output 19 [2021-10-16 02:01:27,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:01:27,513 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:01:27,514 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 28 treesize of output 22 [2021-10-16 02:01:27,686 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 02:01:27,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:01:27,727 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:01:27,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-16 02:01:27,870 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:01:27,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 14 [2021-10-16 02:01:27,945 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:01:27,946 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 27 treesize of output 26 [2021-10-16 02:01:28,065 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 22 treesize of output 10 [2021-10-16 02:01:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:28,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:49,770 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 132 treesize of output 126 [2021-10-16 02:01:49,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:49,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-10-16 02:01:50,187 INFO L354 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2021-10-16 02:01:50,187 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-10-16 02:01:50,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:50,201 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 40 treesize of output 42 [2021-10-16 02:01:50,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-10-16 02:01:50,280 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:50,281 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 51 treesize of output 53 [2021-10-16 02:01:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:01:50,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67930711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:01:50,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:01:50,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 57 [2021-10-16 02:01:50,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032337599] [2021-10-16 02:01:50,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-16 02:01:50,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-16 02:01:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2652, Unknown=25, NotChecked=318, Total=3192 [2021-10-16 02:01:50,707 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 57 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 57 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:55,376 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_sll_circular_create_~head~0.base)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_node_create_~temp~0.base)))) (= c_ULTIMATE.start_main_~len~0 (_ bv2 32)) (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd c_ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_sll_circular_create_~last~0.base))))))) is different from false [2021-10-16 02:02:13,036 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32)) (v_ULTIMATE.start_sll_circular_update_at_~head.offset_19 (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_update_at_~head.base) c_ULTIMATE.start_sll_circular_update_at_~head.offset))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_19) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= c_ULTIMATE.start_main_~len~0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_update_at_~head.base) c_ULTIMATE.start_sll_circular_update_at_~head.offset))) (store |c_#memory_int| .cse1 (store (select |c_#memory_int| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)))) (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~s~0.base) c_ULTIMATE.start_main_~s~0.offset))) (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) c_ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~s~0.offset)) c_ULTIMATE.start_main_~len~0))) is different from false [2021-10-16 02:04:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:18,888 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2021-10-16 02:04:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-16 02:04:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 57 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 02:04:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:18,895 INFO L225 Difference]: With dead ends: 186 [2021-10-16 02:04:18,896 INFO L226 Difference]: Without dead ends: 184 [2021-10-16 02:04:18,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 105 SyntacticMatches, 10 SemanticMatches, 94 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 162750.8ms TimeCoverageRelationStatistics Valid=895, Invalid=7269, Unknown=46, NotChecked=910, Total=9120 [2021-10-16 02:04:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-16 02:04:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 73. [2021-10-16 02:04:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 72 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2021-10-16 02:04:18,956 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 29 [2021-10-16 02:04:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:18,957 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2021-10-16 02:04:18,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 57 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2021-10-16 02:04:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:04:18,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:18,961 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:18,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:19,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-16 02:04:19,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-16 02:04:19,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:19,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:04:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1698317453, now seen corresponding path program 1 times [2021-10-16 02:04:19,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:19,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621989277] [2021-10-16 02:04:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:19,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:19,585 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:19,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:04:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:19,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:04:19,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:20,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:20,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:20,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621989277] [2021-10-16 02:04:20,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621989277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:04:20,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:04:20,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:04:20,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623759726] [2021-10-16 02:04:20,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:04:20,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:04:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:04:20,103 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:20,195 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2021-10-16 02:04:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:04:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:04:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:20,199 INFO L225 Difference]: With dead ends: 90 [2021-10-16 02:04:20,199 INFO L226 Difference]: Without dead ends: 82 [2021-10-16 02:04:20,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:04:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-16 02:04:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-10-16 02:04:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2021-10-16 02:04:20,223 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 30 [2021-10-16 02:04:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:20,224 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2021-10-16 02:04:20,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2021-10-16 02:04:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:04:20,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:20,226 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:20,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:20,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:04:20,440 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:04:20,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:20,440 INFO L82 PathProgramCache]: Analyzing trace with hash 416873879, now seen corresponding path program 2 times [2021-10-16 02:04:20,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:20,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479018362] [2021-10-16 02:04:20,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:04:20,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:20,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:20,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:20,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:04:20,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:04:20,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:04:20,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:20,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:21,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:21,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479018362] [2021-10-16 02:04:21,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479018362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:21,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2005025121] [2021-10-16 02:04:21,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:04:21,152 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:21,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:21,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:21,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:04:21,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:04:21,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:21,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:04:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:21,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:21,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2005025121] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:21,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022486801] [2021-10-16 02:04:21,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:04:21,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:21,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:21,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:04:22,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:04:22,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:22,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:04:22,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:22,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:04:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022486801] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:22,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:04:22,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-16 02:04:22,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342429097] [2021-10-16 02:04:22,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:04:22,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:04:22,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:04:22,885 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:23,910 INFO L93 Difference]: Finished difference Result 197 states and 233 transitions. [2021-10-16 02:04:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:04:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:04:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:23,920 INFO L225 Difference]: With dead ends: 197 [2021-10-16 02:04:23,921 INFO L226 Difference]: Without dead ends: 166 [2021-10-16 02:04:23,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 940.4ms TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-10-16 02:04:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-16 02:04:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 76. [2021-10-16 02:04:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-10-16 02:04:23,951 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 30 [2021-10-16 02:04:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:23,951 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-10-16 02:04:23,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-10-16 02:04:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:04:23,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:23,954 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:24,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:24,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 02:04:24,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:24,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:24,580 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:04:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2096269638, now seen corresponding path program 1 times [2021-10-16 02:04:24,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:24,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17402785] [2021-10-16 02:04:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:24,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:24,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:24,583 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:24,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:04:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:24,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:04:24,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:25,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:25,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:25,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17402785] [2021-10-16 02:04:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17402785] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:25,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1360175658] [2021-10-16 02:04:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:25,197 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:25,198 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-16 02:04:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:04:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:25,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:26,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1360175658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:26,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121770765] [2021-10-16 02:04:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:26,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:26,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-16 02:04:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:26,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:04:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:26,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:26,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121770765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:26,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:04:26,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 02:04:26,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240575225] [2021-10-16 02:04:26,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:04:26,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:04:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:04:26,654 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:26,863 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2021-10-16 02:04:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:04:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 02:04:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:26,866 INFO L225 Difference]: With dead ends: 102 [2021-10-16 02:04:26,866 INFO L226 Difference]: Without dead ends: 94 [2021-10-16 02:04:26,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:04:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-16 02:04:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2021-10-16 02:04:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-10-16 02:04:26,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 35 [2021-10-16 02:04:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:26,896 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-10-16 02:04:26,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-10-16 02:04:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:04:26,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:26,899 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:26,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:27,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:27,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:27,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:27,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:04:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1302607909, now seen corresponding path program 3 times [2021-10-16 02:04:27,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:27,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493587246] [2021-10-16 02:04:27,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:04:27,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:27,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:27,512 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:27,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:04:28,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 02:04:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:04:28,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:28,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:04:29,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493587246] [2021-10-16 02:04:29,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493587246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059580868] [2021-10-16 02:04:29,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:04:29,027 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:29,028 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:29,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:04:29,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:04:29,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129095135] [2021-10-16 02:04:29,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:04:29,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:29,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:29,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 1 [2021-10-16 02:04:29,676 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:29,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:04:31,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 02:04:31,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:31,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:04:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:04:31,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:04:31,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129095135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:31,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:04:31,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 7] total 17 [2021-10-16 02:04:31,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188275610] [2021-10-16 02:04:31,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 02:04:31,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 02:04:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:04:31,862 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:04:32,107 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-10-16 02:04:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:04:32,108 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 02:04:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:04:32,109 INFO L225 Difference]: With dead ends: 96 [2021-10-16 02:04:32,109 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 02:04:32,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 463.3ms TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:04:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 02:04:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-10-16 02:04:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-10-16 02:04:32,138 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 35 [2021-10-16 02:04:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:04:32,139 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-10-16 02:04:32,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:04:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-10-16 02:04:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 02:04:32,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:04:32,145 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:04:32,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:32,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:32,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:32,546 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:04:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:04:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 611503240, now seen corresponding path program 1 times [2021-10-16 02:04:32,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:04:32,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057778361] [2021-10-16 02:04:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:32,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:04:32,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:04:32,548 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:04:32,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:04:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:33,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-16 02:04:33,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:33,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:04:33,266 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:04:33,266 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 17 treesize of output 17 [2021-10-16 02:04:33,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:04:33,452 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:04:33,452 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 28 treesize of output 22 [2021-10-16 02:04:33,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:04:33,735 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:04:33,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 25 [2021-10-16 02:04:34,322 INFO L354 Elim1Store]: treesize reduction 159, result has 15.0 percent of original size [2021-10-16 02:04:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 110 [2021-10-16 02:04:34,327 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 96 treesize of output 88 [2021-10-16 02:04:34,376 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 02:04:34,376 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 88 treesize of output 74 [2021-10-16 02:04:35,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-10-16 02:04:35,096 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 25 treesize of output 17 [2021-10-16 02:04:35,218 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 19 treesize of output 7 [2021-10-16 02:04:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:35,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:35,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2021-10-16 02:04:35,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:35,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:04:35,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:35,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:04:36,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:36,331 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 56 treesize of output 47 [2021-10-16 02:04:36,400 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 33 treesize of output 29 [2021-10-16 02:04:36,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:36,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-16 02:04:39,209 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset c_ULTIMATE.start_sll_circular_create_~head~0.base)) c_ULTIMATE.start_sll_circular_create_~head~0.base) c_ULTIMATE.start_sll_circular_create_~head~0.offset) c_ULTIMATE.start_sll_circular_create_~head~0.base))) is different from false [2021-10-16 02:04:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:04:39,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:39,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057778361] [2021-10-16 02:04:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057778361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:39,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1173441073] [2021-10-16 02:04:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:39,663 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:39,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:39,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:39,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:04:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:40,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-16 02:04:40,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:40,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:04:40,989 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:04:40,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-16 02:04:41,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:04:41,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:04:41,523 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:04:41,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 40 [2021-10-16 02:04:41,547 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-16 02:04:41,547 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 46 treesize of output 41 [2021-10-16 02:04:42,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:04:42,333 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:04:42,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 58 [2021-10-16 02:04:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:04:42,354 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-10-16 02:04:42,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 44 [2021-10-16 02:04:43,356 INFO L354 Elim1Store]: treesize reduction 155, result has 17.1 percent of original size [2021-10-16 02:04:43,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 128 [2021-10-16 02:04:43,361 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 114 treesize of output 106 [2021-10-16 02:04:43,468 INFO L354 Elim1Store]: treesize reduction 169, result has 15.1 percent of original size [2021-10-16 02:04:43,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 102 [2021-10-16 02:04:44,573 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 47 treesize of output 35 [2021-10-16 02:04:44,578 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 32 treesize of output 20 [2021-10-16 02:04:44,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:04:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:44,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:45,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 92 [2021-10-16 02:04:45,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:45,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:04:45,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:45,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-16 02:04:46,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:46,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-16 02:04:46,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:04:46,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-16 02:04:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:59,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1173441073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:59,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407404639] [2021-10-16 02:04:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:59,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:59,306 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:59,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 02:05:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:00,007 WARN L261 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-16 02:05:00,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:00,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:05:00,671 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:05:00,671 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 17 treesize of output 17 [2021-10-16 02:05:01,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:05:01,419 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:05:01,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 02:05:02,537 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-16 02:05:02,537 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 49 treesize of output 31 [2021-10-16 02:05:04,125 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:05:04,126 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 135 treesize of output 109 [2021-10-16 02:05:04,132 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 96 treesize of output 88 [2021-10-16 02:05:04,248 INFO L354 Elim1Store]: treesize reduction 150, result has 16.7 percent of original size [2021-10-16 02:05:04,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 87 [2021-10-16 02:05:07,736 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 75 treesize of output 59 [2021-10-16 02:05:07,741 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 56 treesize of output 48 [2021-10-16 02:05:08,262 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:05:08,262 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 02:05:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:08,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:12,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:12,629 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 146 treesize of output 149 [2021-10-16 02:05:12,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:12,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-16 02:05:12,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:12,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-16 02:05:13,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:13,759 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 115 treesize of output 94 [2021-10-16 02:05:14,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_12 [2021-10-16 02:05:14,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:05:14,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21, 21] total 65 [2021-10-16 02:05:14,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945456862] [2021-10-16 02:05:14,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-16 02:05:14,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:05:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-16 02:05:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=8239, Unknown=5, NotChecked=184, Total=8930 [2021-10-16 02:05:14,288 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:32,575 WARN L207 SmtUtils]: Spent 9.77 s on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-10-16 02:06:42,883 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification that was a NOOP. DAG size: 91 [2021-10-16 02:07:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:22,942 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2021-10-16 02:07:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-16 02:07:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 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 36 [2021-10-16 02:07:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:22,952 INFO L225 Difference]: With dead ends: 106 [2021-10-16 02:07:22,952 INFO L226 Difference]: Without dead ends: 98 [2021-10-16 02:07:22,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 135 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5539 ImplicationChecksByTransitivity, 144101.2ms TimeCoverageRelationStatistics Valid=1666, Invalid=16660, Unknown=38, NotChecked=268, Total=18632 [2021-10-16 02:07:22,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-16 02:07:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2021-10-16 02:07:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-10-16 02:07:23,005 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 36 [2021-10-16 02:07:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:23,005 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-10-16 02:07:23,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7538461538461538) internal successors, (114), 65 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-10-16 02:07:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:07:23,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:23,013 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:23,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:23,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:23,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:23,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:23,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1828385158, now seen corresponding path program 2 times [2021-10-16 02:07:23,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:23,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956922900] [2021-10-16 02:07:23,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:23,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:23,620 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:23,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:07:24,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:24,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:07:24,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:24,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:24,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:24,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956922900] [2021-10-16 02:07:24,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956922900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:24,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [85083311] [2021-10-16 02:07:24,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:24,573 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:24,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:24,574 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:24,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 02:07:25,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:25,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:25,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:07:25,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:25,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:25,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [85083311] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:25,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712928625] [2021-10-16 02:07:25,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:25,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:25,743 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:25,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 02:07:26,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:26,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:07:26,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:26,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:27,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712928625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:27,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:27,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 15 [2021-10-16 02:07:27,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203083467] [2021-10-16 02:07:27,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:07:27,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:07:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:07:27,137 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:27,374 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-10-16 02:07:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:07:27,375 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-16 02:07:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:27,376 INFO L225 Difference]: With dead ends: 70 [2021-10-16 02:07:27,377 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 02:07:27,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 372.4ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:07:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 02:07:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-16 02:07:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 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 02:07:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-16 02:07:27,398 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2021-10-16 02:07:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:27,398 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-16 02:07:27,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-16 02:07:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-16 02:07:27,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:27,400 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:27,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:27,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:27,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:28,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:28,016 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1103709997, now seen corresponding path program 4 times [2021-10-16 02:07:28,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:28,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321679769] [2021-10-16 02:07:28,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:07:28,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:28,019 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:28,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:07:28,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:07:28,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:07:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:28,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:29,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:29,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321679769] [2021-10-16 02:07:29,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321679769] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:29,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [574301804] [2021-10-16 02:07:29,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:07:29,087 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:29,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:29,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:29,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-16 02:07:30,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:07:30,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:30,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:07:30,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:30,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:30,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [574301804] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:30,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884340630] [2021-10-16 02:07:30,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:07:30,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:30,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:30,404 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:30,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-16 02:07:31,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:07:31,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:07:31,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:31,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-16 02:07:31,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884340630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:31,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:31,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 02:07:31,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441130676] [2021-10-16 02:07:31,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:07:31,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:07:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:07:31,381 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 02:07:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:31,400 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-16 02:07:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:07:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-16 02:07:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:31,401 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:07:31,401 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:07:31,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:07:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:07:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:07:31,402 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 02:07:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:07:31,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-16 02:07:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:31,403 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:07:31,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 02:07:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:07:31,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:07:31,406 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:07:31,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:31,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:31,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:32,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:32,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:07:32,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:32,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:09:17,417 WARN L207 SmtUtils]: Spent 1.68 m on a formula simplification. DAG size of input: 256 DAG size of output: 153 [2021-10-16 02:09:45,489 WARN L207 SmtUtils]: Spent 21.52 s on a formula simplification. DAG size of input: 235 DAG size of output: 122 [2021-10-16 02:11:04,295 WARN L207 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 220 DAG size of output: 151 [2021-10-16 02:11:04,340 INFO L860 garLoopResultBuilder]: At program point L638(lines 620 639) the Hoare annotation is: true [2021-10-16 02:11:04,341 INFO L860 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-10-16 02:11:04,341 INFO L860 garLoopResultBuilder]: At program point L572-1(line 572) the Hoare annotation is: true [2021-10-16 02:11:04,341 INFO L853 garLoopResultBuilder]: At program point L581(lines 574 582) the Hoare annotation is: (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)))) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset) (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) [2021-10-16 02:11:04,342 INFO L853 garLoopResultBuilder]: At program point L581-1(lines 574 582) the Hoare annotation is: (and (= ULTIMATE.start_sll_circular_create_~head~0.base ULTIMATE.start_sll_circular_create_~last~0.base) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) (= ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))) (_ bv1 1))) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset) (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) [2021-10-16 02:11:04,342 INFO L853 garLoopResultBuilder]: At program point L614-2(lines 614 617) the Hoare annotation is: (let ((.cse19 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse0 (or (not (= .cse19 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse12 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_circular_update_at_~head.offset)) (.cse1 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.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))))) (.cse4 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse5 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse6 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse7 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse8 (= ULTIMATE.start_sll_circular_update_at_~data (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (.cse9 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse10 (or (not (= .cse19 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse17 (= ULTIMATE.start_sll_circular_update_at_~head.base ULTIMATE.start_main_~s~0.base)) (.cse11 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse0 (= ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse7 .cse8 .cse9 (forall ((ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~head.offset (_ BitVec 32))) (= ULTIMATE.start_main_~len~0 (select (select (store |#memory_int| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_int| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) ULTIMATE.start_sll_circular_update_at_~data)) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)))) (not (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base)) .cse10 .cse11) (let ((.cse13 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32)))) (and .cse0 .cse12 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|)) (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_1)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_sll_circular_update_at_~data ULTIMATE.start_main_~len~0) (bvslt .cse13 (_ bv2 32)) .cse6 (bvsgt .cse13 (_ bv0 32)) .cse7 .cse9 .cse10 (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse14 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse16 (select (select .cse14 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse15 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse14 .cse15 (store (select .cse14 .cse15) (bvadd (_ bv4 32) .cse16) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse16)))) .cse17 .cse11)) (and .cse0 .cse12 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32)) .cse7 .cse8 .cse9 (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= (select (select (let ((.cse18 (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) (store |#memory_int| .cse18 (store (select |#memory_int| .cse18) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)) ULTIMATE.start_main_~len~0)) .cse10 (not (= ULTIMATE.start_main_~s~0.base (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) ULTIMATE.start_sll_circular_update_at_~head.offset))) .cse17 .cse11)))) [2021-10-16 02:11:04,342 INFO L857 garLoopResultBuilder]: For program point L614-3(lines 614 617) no Hoare annotation was computed. [2021-10-16 02:11:04,343 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:11:04,343 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:11:04,343 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 633) no Hoare annotation was computed. [2021-10-16 02:11:04,343 INFO L860 garLoopResultBuilder]: At program point L598-2(lines 598 602) the Hoare annotation is: true [2021-10-16 02:11:04,343 INFO L857 garLoopResultBuilder]: For program point L598-3(lines 598 602) no Hoare annotation was computed. [2021-10-16 02:11:04,344 INFO L853 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse6 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32))) (.cse10 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse16 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse17 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse4 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32))) (.cse13 (= (select (select |#memory_int| ULTIMATE.start_sll_circular_get_data_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) ULTIMATE.start_main_~expected~0)) (.cse0 (or (not (= .cse17 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse1 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.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))))) (.cse15 (not (bvsgt ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32)))) (.cse5 (let ((.cse18 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse19 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse16 .cse18 .cse19) (and (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse18 .cse19)))) (.cse7 (= .cse10 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))))) (.cse8 (bvsgt .cse6 (_ bv0 32))) (.cse9 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse11 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse12 (or (not (= .cse17 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse14 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (bvslt .cse6 (_ bv2 32)) .cse7 .cse8 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse9 (= ULTIMATE.start_sll_circular_update_at_~data .cse10) .cse11 .cse12 .cse13 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse15 (bvsgt ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse4 .cse5 .cse7 .cse8 .cse9 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse16 .cse2 .cse3 .cse15 (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_get_data_at_~head.base) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_get_data_at_~head.base) ULTIMATE.start_sll_circular_get_data_at_~head.offset))) ULTIMATE.start_main_~expected~0) .cse5 .cse7 .cse8 .cse9 .cse11 .cse12 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv1 32)) .cse14)))) [2021-10-16 02:11:04,344 INFO L857 garLoopResultBuilder]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2021-10-16 02:11:04,344 INFO L853 garLoopResultBuilder]: At program point L632(lines 620 639) the Hoare annotation is: false [2021-10-16 02:11:04,345 INFO L853 garLoopResultBuilder]: At program point L625-2(lines 625 628) the Hoare annotation is: (let ((.cse15 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse0 (or (not (= .cse15 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse1 (= ULTIMATE.start_sll_circular_update_at_~index (_ bv0 32))) (.cse2 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse6 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse7 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse8 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse9 (or (not (= .cse15 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse10 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (let ((.cse5 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)))) (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse0 (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse1 .cse2 .cse3 .cse4 (= .cse5 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) .cse6 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse7 (= ULTIMATE.start_sll_circular_update_at_~data .cse5) .cse8 .cse9 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) .cse10)) (and .cse0 .cse2 .cse3 .cse4 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (store (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset) v_DerPreprocessor_1) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_main_~i~0 (_ bv0 32)) .cse6 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (store (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) (bvadd (_ bv4 32) |ULTIMATE.start_sll_circular_create_#res.offset|) v_DerPreprocessor_1) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|))) .cse7 .cse8 .cse9 (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse11 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse13 (select (select .cse11 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse12 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse11 .cse12 (store (select .cse11 .cse12) (bvadd (_ bv4 32) .cse13) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse13)))) .cse10) (and .cse0 (= ULTIMATE.start_main_~s~0.offset ULTIMATE.start_sll_circular_update_at_~head.offset) .cse1 .cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse3 .cse4 (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (not (= (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_1)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_main_~s~0.base))) (= ULTIMATE.start_sll_circular_update_at_~data ULTIMATE.start_main_~len~0) .cse6 .cse7 .cse8 (forall ((v_ULTIMATE.start_sll_circular_update_at_~head.offset_14 (_ BitVec 32)) (ULTIMATE.start_sll_circular_update_at_~data (_ BitVec 32))) (= (select (select (let ((.cse14 (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) (store |#memory_int| .cse14 (store (select |#memory_int| .cse14) (bvadd (_ bv4 32) v_ULTIMATE.start_sll_circular_update_at_~head.offset_14) ULTIMATE.start_sll_circular_update_at_~data))) ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)) ULTIMATE.start_main_~len~0)) .cse9 (= ULTIMATE.start_sll_circular_update_at_~head.base ULTIMATE.start_main_~s~0.base) .cse10)))) [2021-10-16 02:11:04,345 INFO L857 garLoopResultBuilder]: For program point L625-3(lines 625 628) no Hoare annotation was computed. [2021-10-16 02:11:04,345 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2021-10-16 02:11:04,346 INFO L857 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2021-10-16 02:11:04,346 INFO L857 garLoopResultBuilder]: For program point L576-2(lines 576 578) no Hoare annotation was computed. [2021-10-16 02:11:04,346 INFO L857 garLoopResultBuilder]: For program point L576-3(lines 576 578) no Hoare annotation was computed. [2021-10-16 02:11:04,346 INFO L853 garLoopResultBuilder]: At program point L593(lines 583 594) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (and (or (not (= .cse0 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base)))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_circular_create_#res.base|) |ULTIMATE.start_sll_circular_create_#res.offset|) |ULTIMATE.start_sll_circular_create_#res.base|)) (= ULTIMATE.start_main_~len~0 (_ bv2 32)) (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base))) (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32)) (or (not (= .cse0 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (let ((.cse1 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.offset)))) (let ((.cse3 (select (select .cse1 ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (= (select (select (let ((.cse2 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd (_ bv4 32) .cse3) v_DerPreprocessor_5))) ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) .cse3)))) (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) [2021-10-16 02:11:04,347 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:11:04,347 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 637) no Hoare annotation was computed. [2021-10-16 02:11:04,347 INFO L853 garLoopResultBuilder]: At program point L586-2(lines 586 591) the Hoare annotation is: (let ((.cse4 (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))) (.cse0 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse1 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse2 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse3 (= ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv0 32))) (.cse5 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (= ULTIMATE.start_sll_circular_create_~head~0.base ULTIMATE.start_sll_circular_create_~last~0.base) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~len~0 ULTIMATE.start_sll_circular_create_~len) .cse3 (= (_ bv0 1) (bvadd (bvneg .cse4) (_ bv1 1))) .cse5 (= (_ bv2 32) ULTIMATE.start_sll_circular_create_~len)) (and (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) (_ bv0 32)) (not (= (_ bv0 1) .cse4)) .cse0 .cse1 (= ULTIMATE.start_main_~len~0 (_ bv2 32)) .cse2 (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_sll_circular_create_~last~0.offset (_ BitVec 32))) (not (= (select (store (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~last~0.base) ULTIMATE.start_sll_circular_create_~last~0.offset ULTIMATE.start_sll_circular_create_~head~0.base)) ULTIMATE.start_sll_circular_create_~head~0.base) (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)) v_DerPreprocessor_1) ULTIMATE.start_sll_circular_create_~head~0.offset) ULTIMATE.start_sll_circular_create_~head~0.base))) (= (select (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_create_~head~0.base) ULTIMATE.start_sll_circular_create_~head~0.offset) ULTIMATE.start_sll_circular_create_~last~0.base) (= ULTIMATE.start_sll_circular_create_~len (_ bv1 32)) .cse3 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))))) .cse5))) [2021-10-16 02:11:04,347 INFO L857 garLoopResultBuilder]: For program point L586-3(lines 586 591) no Hoare annotation was computed. [2021-10-16 02:11:04,348 INFO L853 garLoopResultBuilder]: At program point L611(lines 606 612) the Hoare annotation is: (let ((.cse21 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32))) (.cse2 (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (.cse15 (= ULTIMATE.start_main_~i~0 (_ bv0 32))) (.cse20 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse0 (or (not (= .cse20 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse1 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse3 (= (_ bv0 1) (bvadd (bvneg (bvneg (select |#valid| |ULTIMATE.start_node_create_#res.base|))) (_ bv1 1)))) (.cse4 (= ULTIMATE.start_main_~expected~0 |ULTIMATE.start_sll_circular_get_data_at_#res|)) (.cse5 (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |#valid| ULTIMATE.start_node_create_~temp~0.base))))) (.cse6 (let ((.cse22 (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0)) (.cse23 (= ULTIMATE.start_main_~len~0 (_ bv2 32)))) (or (and .cse2 .cse22 .cse23) (and .cse15 .cse22 .cse23)))) (.cse7 (bvslt .cse21 (_ bv2 32))) (.cse9 (bvsgt .cse21 (_ bv0 32))) (.cse10 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse11 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse12 (or (not (= .cse20 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse13 (= (select (select |#memory_int| ULTIMATE.start_sll_circular_get_data_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_get_data_at_~head.offset)) ULTIMATE.start_main_~expected~0)) (.cse8 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse14 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32)) .cse8) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (not (bvsgt ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)))) (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse15 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)) .cse6 .cse7 .cse9 .cse10 .cse11 .cse12 (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse19 (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset))) (let ((.cse17 (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) .cse19 v_DerPreprocessor_10)))) (let ((.cse16 (select (select .cse17 ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) (= .cse16 (select (select (let ((.cse18 (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) .cse19 v_DerPreprocessor_9)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) (store .cse17 .cse18 (store (select .cse17 .cse18) (bvadd (_ bv4 32) .cse16) v_DerPreprocessor_5))) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))))) .cse13 (= ULTIMATE.start_main_~len~0 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset))) (= (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse8) .cse14)))) [2021-10-16 02:11:04,348 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:11:04,348 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 605) no Hoare annotation was computed. [2021-10-16 02:11:04,349 INFO L857 garLoopResultBuilder]: For program point L596(lines 596 604) no Hoare annotation was computed. [2021-10-16 02:11:04,349 INFO L857 garLoopResultBuilder]: For program point L629-2(lines 629 634) no Hoare annotation was computed. [2021-10-16 02:11:04,349 INFO L853 garLoopResultBuilder]: At program point L629-3(lines 629 634) the Hoare annotation is: (let ((.cse15 (bvadd ULTIMATE.start_sll_circular_update_at_~index (_ bv1 32))) (.cse14 (bvadd ULTIMATE.start_sll_circular_create_~head~0.offset (_ bv4 32)))) (let ((.cse3 (or (not (= .cse14 |ULTIMATE.start_node_create_#res.offset|)) (not (= ULTIMATE.start_sll_circular_create_~head~0.base |ULTIMATE.start_node_create_#res.base|)))) (.cse4 (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |#valid| ULTIMATE.start_sll_circular_create_~head~0.base))))))) (.cse5 (= (_ 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))))) (.cse0 (bvslt .cse15 (_ bv2 32))) (.cse1 (= ULTIMATE.start_main_~len~0 (_ bv2 32))) (.cse2 (bvsgt .cse15 (_ bv0 32))) (.cse9 (not (= (_ bv0 1) (select |#valid| ULTIMATE.start_sll_circular_create_~last~0.base)))) (.cse7 (bvadd ULTIMATE.start_main_~len~0 (_ bv1 32))) (.cse10 (= |ULTIMATE.start_node_create_#res.offset| (_ bv0 32))) (.cse11 (or (not (= .cse14 ULTIMATE.start_node_create_~temp~0.offset)) (not (= ULTIMATE.start_node_create_~temp~0.base ULTIMATE.start_sll_circular_create_~head~0.base)))) (.cse8 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)) (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset)))) (.cse12 (= (_ bv0 32) ULTIMATE.start_node_create_~temp~0.offset))) (or (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) .cse0 .cse1 .cse2 (not (bvsgt ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)))) (and .cse3 .cse4 (= ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse5 .cse6 (= ULTIMATE.start_sll_circular_get_data_at_~index (_ bv0 32)) .cse0 (= .cse7 .cse8) .cse1 .cse2 .cse9 .cse10 .cse11 .cse12) (let ((.cse13 (select (select |#memory_int| ULTIMATE.start_main_~s~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~s~0.offset)))) (and (forall ((v_DerPreprocessor_5 (_ BitVec 32))) (= (select (select (store |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.offset| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_5)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset) ULTIMATE.start_sll_circular_update_at_~head.offset)) .cse3 .cse4 .cse5 .cse6 (= .cse13 (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0)) .cse0 .cse1 .cse2 (forall ((v_DerPreprocessor_4 (_ BitVec 32))) (= ULTIMATE.start_sll_circular_update_at_~head.base (select (select (store |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base (store (select |#memory_$Pointer$.base| ULTIMATE.start_sll_circular_update_at_~head.base) (bvadd (_ bv4 32) ULTIMATE.start_sll_circular_update_at_~head.offset) v_DerPreprocessor_4)) ULTIMATE.start_main_~s~0.base) ULTIMATE.start_main_~s~0.offset))) .cse9 (= ULTIMATE.start_sll_circular_update_at_~data .cse7) .cse10 .cse11 (= ULTIMATE.start_main_~len~0 .cse13) (= (bvadd ULTIMATE.start_main_~len~0 ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse8) .cse12))))) [2021-10-16 02:11:04,349 INFO L857 garLoopResultBuilder]: For program point L629-4(lines 629 634) no Hoare annotation was computed. [2021-10-16 02:11:04,349 INFO L857 garLoopResultBuilder]: For program point L613(lines 1 639) no Hoare annotation was computed. [2021-10-16 02:11:04,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:11:04,362 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.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 02:11:04,365 INFO L168 Benchmark]: Toolchain (without parser) took 656474.47 ms. Allocated memory was 54.5 MB in the beginning and 96.5 MB in the end (delta: 41.9 MB). Free memory was 31.5 MB in the beginning and 22.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,365 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:11:04,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.41 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 44.5 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.44 ms. Allocated memory is still 69.2 MB. Free memory was 44.5 MB in the beginning and 42.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,367 INFO L168 Benchmark]: Boogie Preprocessor took 51.00 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,367 INFO L168 Benchmark]: RCFGBuilder took 775.97 ms. Allocated memory is still 69.2 MB. Free memory was 40.1 MB in the beginning and 42.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,368 INFO L168 Benchmark]: TraceAbstraction took 654822.94 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 41.9 MB in the beginning and 22.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:04,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.41 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 44.5 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.44 ms. Allocated memory is still 69.2 MB. Free memory was 44.5 MB in the beginning and 42.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.00 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 775.97 ms. Allocated memory is still 69.2 MB. Free memory was 40.1 MB in the beginning and 42.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 654822.94 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 41.9 MB in the beginning and 22.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 52.4 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: 637]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 654739.9ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 44.3ms, AutomataDifference: 279188.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 212323.9ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 293 SDtfs, 1647 SDslu, 1625 SDs, 0 SdLazy, 2389 SolverSat, 612 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 90690.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1762 GetRequests, 1421 SyntacticMatches, 16 SemanticMatches, 325 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 8144 ImplicationChecksByTransitivity, 308980.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 287.9ms AutomataMinimizationTime, 12 MinimizatonAttempts, 292 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 35 NumberOfFragments, 2352 HoareAnnotationTreeSize, 14 FomulaSimplifications, 183486 FormulaSimplificationTreeSizeReduction, 752.0ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 131965 FormulaSimplificationTreeSizeReductionInter, 211559.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 529.9ms SsaConstructionTime, 3528.3ms SatisfiabilityAnalysisTime, 127447.0ms InterpolantComputationTime, 824 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1596 ConstructedInterpolants, 109 QuantifiedInterpolants, 8961 SizeOfPredicates, 275 NumberOfNonLiveVariables, 3494 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 52 InterpolantComputations, 8 PerfectInterpolantSequences, 543/780 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: 620]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 572]: 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 02:11:04,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b2afbb-1f07-45c1-8253-fea26a20c3ca/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...