./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --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_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/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_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/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_45ae210e-9b3b-462b-b46d-2d4289201382/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/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_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/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_45ae210e-9b3b-462b-b46d-2d4289201382/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:26:00,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:00,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:00,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:00,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:00,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:00,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:00,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:00,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:00,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:00,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:00,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:00,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:00,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:00,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:00,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:00,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:00,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:00,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:00,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:00,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:00,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:00,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:00,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:00,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:00,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:00,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:00,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:00,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:00,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:00,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:00,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:00,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:00,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:00,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:00,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:00,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:00,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:00,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:00,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:00,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:00,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:26:01,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:01,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:01,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:01,025 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:01,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:01,026 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:01,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:26:01,026 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:01,026 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:01,027 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:26:01,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:26:01,028 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:01,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:26:01,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:26:01,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:26:01,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:01,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:01,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:26:01,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:01,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:01,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:01,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:01,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:01,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:01,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:01,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:01,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:01,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:01,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:01,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:01,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:01,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:01,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:01,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:01,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:26:01,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:26:01,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:01,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:01,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:01,037 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_45ae210e-9b3b-462b-b46d-2d4289201382/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2021-10-16 02:26:01,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:01,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:01,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:01,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:01,436 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:01,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-16 02:26:01,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/5446ba999/f0af5ac5cfde42a1add1ad00643722ca/FLAG9a63cdc69 [2021-10-16 02:26:02,145 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:02,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-16 02:26:02,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/5446ba999/f0af5ac5cfde42a1add1ad00643722ca/FLAG9a63cdc69 [2021-10-16 02:26:02,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/5446ba999/f0af5ac5cfde42a1add1ad00643722ca [2021-10-16 02:26:02,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:02,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:02,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:02,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:02,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:02,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f3eb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02, skipping insertion in model container [2021-10-16 02:26:02,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:02,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:02,712 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_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-16 02:26:02,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:02,787 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:02,800 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_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-16 02:26:02,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:02,859 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:02,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02 WrapperNode [2021-10-16 02:26:02,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:02,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:02,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:02,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:02,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:02,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:02,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:02,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:02,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:02,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:02,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:02,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:02,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:02,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (1/1) ... [2021-10-16 02:26:03,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:03,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:03,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:26:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:04,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:04,039 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-16 02:26:04,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:04 BoogieIcfgContainer [2021-10-16 02:26:04,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:04,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:04,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:04,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:02" (1/3) ... [2021-10-16 02:26:04,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:04, skipping insertion in model container [2021-10-16 02:26:04,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:02" (2/3) ... [2021-10-16 02:26:04,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:04, skipping insertion in model container [2021-10-16 02:26:04,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:04" (3/3) ... [2021-10-16 02:26:04,057 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-16 02:26:04,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:04,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:26:04,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:04,142 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 02:26:04,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:26:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 0 states have call successors, (0), 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 02:26:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:26:04,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:04,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:04,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash 68680612, now seen corresponding path program 1 times [2021-10-16 02:26:04,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:04,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355653516] [2021-10-16 02:26:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:04,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:04,614 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 02:26:04,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:04,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355653516] [2021-10-16 02:26:04,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355653516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:04,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:04,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:26:04,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659836057] [2021-10-16 02:26:04,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:04,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:04,641 INFO L87 Difference]: Start difference. First operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 0 states have call successors, (0), 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 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 02:26:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:04,818 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2021-10-16 02:26:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:26:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 02:26:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:04,835 INFO L225 Difference]: With dead ends: 210 [2021-10-16 02:26:04,835 INFO L226 Difference]: Without dead ends: 145 [2021-10-16 02:26:04,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-16 02:26:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2021-10-16 02:26:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.5) internal successors, (90), 65 states have internal predecessors, (90), 0 states have call successors, (0), 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 02:26:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2021-10-16 02:26:04,883 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2021-10-16 02:26:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:04,884 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2021-10-16 02:26:04,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 02:26:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2021-10-16 02:26:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:26:04,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:04,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:04,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:26:04,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1768782671, now seen corresponding path program 1 times [2021-10-16 02:26:04,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:04,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217192568] [2021-10-16 02:26:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:04,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:05,026 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 02:26:05,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:05,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217192568] [2021-10-16 02:26:05,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217192568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:05,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:05,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:26:05,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135020398] [2021-10-16 02:26:05,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:26:05,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:26:05,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:05,031 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:05,177 INFO L93 Difference]: Finished difference Result 215 states and 274 transitions. [2021-10-16 02:26:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:26:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:26:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:05,180 INFO L225 Difference]: With dead ends: 215 [2021-10-16 02:26:05,180 INFO L226 Difference]: Without dead ends: 201 [2021-10-16 02:26:05,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:26:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-16 02:26:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 98. [2021-10-16 02:26:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 97 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:26:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2021-10-16 02:26:05,198 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2021-10-16 02:26:05,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:05,198 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2021-10-16 02:26:05,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2021-10-16 02:26:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:26:05,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:05,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:05,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:26:05,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash -953037586, now seen corresponding path program 1 times [2021-10-16 02:26:05,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:05,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975011885] [2021-10-16 02:26:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:05,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:05,972 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 02:26:05,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:05,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975011885] [2021-10-16 02:26:05,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975011885] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:05,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:05,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-16 02:26:05,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849077034] [2021-10-16 02:26:05,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:26:05,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:26:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:26:05,976 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:06,731 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2021-10-16 02:26:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:26:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-16 02:26:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:06,735 INFO L225 Difference]: With dead ends: 228 [2021-10-16 02:26:06,735 INFO L226 Difference]: Without dead ends: 224 [2021-10-16 02:26:06,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 579.5ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:26:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-16 02:26:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 101. [2021-10-16 02:26:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 100 states have internal predecessors, (142), 0 states have call successors, (0), 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 02:26:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2021-10-16 02:26:06,761 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 14 [2021-10-16 02:26:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:06,762 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2021-10-16 02:26:06,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2021-10-16 02:26:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:26:06,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:06,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:06,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:26:06,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 565696089, now seen corresponding path program 1 times [2021-10-16 02:26:06,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:06,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414514405] [2021-10-16 02:26:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:06,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:06,889 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 02:26:06,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:06,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414514405] [2021-10-16 02:26:06,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414514405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:06,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:06,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:26:06,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304881383] [2021-10-16 02:26:06,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:26:06,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:26:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:26:06,892 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:06,988 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2021-10-16 02:26:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:26:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-16 02:26:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:06,990 INFO L225 Difference]: With dead ends: 213 [2021-10-16 02:26:06,990 INFO L226 Difference]: Without dead ends: 169 [2021-10-16 02:26:06,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:26:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-16 02:26:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2021-10-16 02:26:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 100 states have internal predecessors, (141), 0 states have call successors, (0), 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 02:26:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2021-10-16 02:26:07,002 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 14 [2021-10-16 02:26:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:07,002 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2021-10-16 02:26:07,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 02:26:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2021-10-16 02:26:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:26:07,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:07,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:07,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:26:07,005 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:07,005 INFO L82 PathProgramCache]: Analyzing trace with hash 519328109, now seen corresponding path program 1 times [2021-10-16 02:26:07,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:07,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486874251] [2021-10-16 02:26:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:07,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:07,110 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 02:26:07,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:07,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486874251] [2021-10-16 02:26:07,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486874251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:07,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:07,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 02:26:07,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187553118] [2021-10-16 02:26:07,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:26:07,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:26:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:07,114 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:07,223 INFO L93 Difference]: Finished difference Result 195 states and 252 transitions. [2021-10-16 02:26:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:26:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:26:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:07,225 INFO L225 Difference]: With dead ends: 195 [2021-10-16 02:26:07,226 INFO L226 Difference]: Without dead ends: 185 [2021-10-16 02:26:07,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:26:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-16 02:26:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2021-10-16 02:26:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 96 states have internal predecessors, (135), 0 states have call successors, (0), 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 02:26:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-10-16 02:26:07,236 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 15 [2021-10-16 02:26:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:07,236 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-10-16 02:26:07,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-10-16 02:26:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:26:07,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:07,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:07,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:26:07,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:07,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1588871102, now seen corresponding path program 1 times [2021-10-16 02:26:07,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:07,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41913197] [2021-10-16 02:26:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:07,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:07,338 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 02:26:07,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:07,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41913197] [2021-10-16 02:26:07,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41913197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:07,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:07,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:26:07,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425520591] [2021-10-16 02:26:07,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:07,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:07,341 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 02:26:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:07,440 INFO L93 Difference]: Finished difference Result 188 states and 242 transitions. [2021-10-16 02:26:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:26:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) Word has length 17 [2021-10-16 02:26:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:07,443 INFO L225 Difference]: With dead ends: 188 [2021-10-16 02:26:07,443 INFO L226 Difference]: Without dead ends: 175 [2021-10-16 02:26:07,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:26:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-16 02:26:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 102. [2021-10-16 02:26:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.46875) internal successors, (141), 101 states have internal predecessors, (141), 0 states have call successors, (0), 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 02:26:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-10-16 02:26:07,452 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 17 [2021-10-16 02:26:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:07,453 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-10-16 02:26:07,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 02:26:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-10-16 02:26:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:26:07,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:07,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:26:07,455 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash 122373411, now seen corresponding path program 1 times [2021-10-16 02:26:07,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:07,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736590854] [2021-10-16 02:26:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:07,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:08,055 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 02:26:08,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736590854] [2021-10-16 02:26:08,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736590854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:08,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:08,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-16 02:26:08,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453291169] [2021-10-16 02:26:08,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:26:08,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:26:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:26:08,058 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:08,978 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2021-10-16 02:26:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:26:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-16 02:26:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:08,980 INFO L225 Difference]: With dead ends: 171 [2021-10-16 02:26:08,980 INFO L226 Difference]: Without dead ends: 152 [2021-10-16 02:26:08,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 894.9ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:26:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-16 02:26:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 87. [2021-10-16 02:26:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 86 states have internal predecessors, (120), 0 states have call successors, (0), 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 02:26:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-10-16 02:26:08,988 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 18 [2021-10-16 02:26:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:08,989 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-10-16 02:26:08,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-10-16 02:26:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:26:08,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:08,994 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:08,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:26:08,994 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:08,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2059638367, now seen corresponding path program 1 times [2021-10-16 02:26:08,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:08,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552956888] [2021-10-16 02:26:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:08,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:09,154 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 02:26:09,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:09,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552956888] [2021-10-16 02:26:09,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552956888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:09,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:09,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 02:26:09,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700793531] [2021-10-16 02:26:09,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:26:09,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:26:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:09,159 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:09,410 INFO L93 Difference]: Finished difference Result 297 states and 369 transitions. [2021-10-16 02:26:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:26:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-16 02:26:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:09,413 INFO L225 Difference]: With dead ends: 297 [2021-10-16 02:26:09,413 INFO L226 Difference]: Without dead ends: 293 [2021-10-16 02:26:09,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:26:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-16 02:26:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2021-10-16 02:26:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.5) internal successors, (177), 123 states have internal predecessors, (177), 0 states have call successors, (0), 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 02:26:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 177 transitions. [2021-10-16 02:26:09,425 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 177 transitions. Word has length 18 [2021-10-16 02:26:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:09,426 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 177 transitions. [2021-10-16 02:26:09,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 177 transitions. [2021-10-16 02:26:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:26:09,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:09,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:09,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:26:09,428 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -716595254, now seen corresponding path program 1 times [2021-10-16 02:26:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:09,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698868970] [2021-10-16 02:26:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:09,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:09,466 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:26:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:09,531 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:26:09,531 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:26:09,533 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:09,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:26:09,545 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:26:09,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:26:09 BoogieIcfgContainer [2021-10-16 02:26:09,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:26:09,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:26:09,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:26:09,586 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:26:09,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:04" (3/4) ... [2021-10-16 02:26:09,590 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:26:09,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:26:09,593 INFO L168 Benchmark]: Toolchain (without parser) took 7107.34 ms. Allocated memory was 88.1 MB in the beginning and 151.0 MB in the end (delta: 62.9 MB). Free memory was 53.1 MB in the beginning and 115.5 MB in the end (delta: -62.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:09,593 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 60.1 MB in the beginning and 60.1 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:09,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.77 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 53.0 MB in the beginning and 90.0 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:09,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:09,596 INFO L168 Benchmark]: Boogie Preprocessor took 61.86 ms. Allocated memory is still 117.4 MB. Free memory was 87.4 MB in the beginning and 85.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:09,596 INFO L168 Benchmark]: RCFGBuilder took 1062.43 ms. Allocated memory is still 117.4 MB. Free memory was 85.8 MB in the beginning and 53.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:09,597 INFO L168 Benchmark]: TraceAbstraction took 5541.88 ms. Allocated memory was 117.4 MB in the beginning and 151.0 MB in the end (delta: 33.6 MB). Free memory was 53.3 MB in the beginning and 115.5 MB in the end (delta: -62.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:09,598 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 151.0 MB. Free memory is still 115.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:09,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 60.1 MB in the beginning and 60.1 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.77 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 53.0 MB in the beginning and 90.0 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.29 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.86 ms. Allocated memory is still 117.4 MB. Free memory was 87.4 MB in the beginning and 85.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1062.43 ms. Allocated memory is still 117.4 MB. Free memory was 85.8 MB in the beginning and 53.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5541.88 ms. Allocated memory was 117.4 MB in the beginning and 151.0 MB in the end (delta: 33.6 MB). Free memory was 53.3 MB in the beginning and 115.5 MB in the end (delta: -62.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 151.0 MB. Free memory is still 115.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5414.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 34.0ms, AutomataDifference: 2625.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 732 SDtfs, 1639 SDslu, 3336 SDs, 0 SdLazy, 604 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 761.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1866.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=8, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 115.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 768 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.0ms SsaConstructionTime, 485.5ms SatisfiabilityAnalysisTime, 1841.4ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:26:09,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/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 02:26:12,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:12,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:12,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:12,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:12,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:12,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:12,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:12,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:12,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:12,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:12,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:12,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:12,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:12,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:12,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:12,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:12,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:12,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:12,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:12,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:12,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:12,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:12,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:12,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:12,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:12,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:12,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:12,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:12,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:12,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:12,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:12,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:12,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:12,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:12,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:12,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:12,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:12,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:12,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:12,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:12,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:26:12,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:12,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:12,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:12,423 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:12,424 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:12,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:12,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:12,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:12,424 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:12,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:12,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:12,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:12,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:12,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:12,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:12,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:12,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:12,427 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:26:12,427 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:26:12,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:12,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:12,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:12,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:12,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:12,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:26:12,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:12,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:12,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:12,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:12,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:12,430 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:26:12,430 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:12,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:12,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:12,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:12,431 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_45ae210e-9b3b-462b-b46d-2d4289201382/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2021-10-16 02:26:12,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:12,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:12,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:12,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:12,889 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:12,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-16 02:26:12,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/3fdd76bbd/34d564ea720044c8ac4fd8545534038f/FLAGaadbb103d [2021-10-16 02:26:13,684 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:13,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-16 02:26:13,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/3fdd76bbd/34d564ea720044c8ac4fd8545534038f/FLAGaadbb103d [2021-10-16 02:26:13,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/data/3fdd76bbd/34d564ea720044c8ac4fd8545534038f [2021-10-16 02:26:13,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:13,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:13,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:13,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:14,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:14,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:13" (1/1) ... [2021-10-16 02:26:14,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e47d7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14, skipping insertion in model container [2021-10-16 02:26:14,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:13" (1/1) ... [2021-10-16 02:26:14,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:14,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:14,238 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_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-16 02:26:14,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:14,407 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:14,430 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_45ae210e-9b3b-462b-b46d-2d4289201382/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-16 02:26:14,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:14,503 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:14,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14 WrapperNode [2021-10-16 02:26:14,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:14,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:14,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:14,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:14,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:14,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:14,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:14,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:14,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:14,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:14,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:14,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:14,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (1/1) ... [2021-10-16 02:26:14,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:14,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:14,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:26:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:15,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:15,428 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-16 02:26:15,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:15 BoogieIcfgContainer [2021-10-16 02:26:15,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:15,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:15,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:15,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:15,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:13" (1/3) ... [2021-10-16 02:26:15,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2873b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:15, skipping insertion in model container [2021-10-16 02:26:15,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:14" (2/3) ... [2021-10-16 02:26:15,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2873b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:15, skipping insertion in model container [2021-10-16 02:26:15,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:15" (3/3) ... [2021-10-16 02:26:15,439 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-16 02:26:15,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:15,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:26:15,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:15,502 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 02:26:15,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:26:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 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 02:26:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:26:15,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:15,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:15,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-16 02:26:15,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:15,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71973516] [2021-10-16 02:26:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:15,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:15,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:15,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:15,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:26:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:15,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:26:15,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:15,837 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 02:26:15,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:15,930 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 02:26:15,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:15,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71973516] [2021-10-16 02:26:15,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71973516] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:15,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:15,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:26:15,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789582839] [2021-10-16 02:26:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:26:15,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:26:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:26:15,967 INFO L87 Difference]: Start difference. First operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 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 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:16,247 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2021-10-16 02:26:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:26:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-16 02:26:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:16,264 INFO L225 Difference]: With dead ends: 397 [2021-10-16 02:26:16,264 INFO L226 Difference]: Without dead ends: 295 [2021-10-16 02:26:16,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-16 02:26:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-10-16 02:26:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 119 states have internal predecessors, (172), 0 states have call successors, (0), 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 02:26:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-10-16 02:26:16,320 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-10-16 02:26:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:16,321 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-10-16 02:26:16,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 02:26:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-10-16 02:26:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:26:16,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:16,323 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, 1, 1] [2021-10-16 02:26:16,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:16,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:16,537 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:16,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:16,538 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-10-16 02:26:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:16,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657758533] [2021-10-16 02:26:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:16,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:16,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:16,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:26:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:16,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:26:16,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:16,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:16,793 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 02:26:16,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:16,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657758533] [2021-10-16 02:26:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657758533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:16,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:16,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:26:16,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272133663] [2021-10-16 02:26:16,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:26:16,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:26:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:26:16,798 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:17,009 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-10-16 02:26:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:26:17,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-16 02:26:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:17,015 INFO L225 Difference]: With dead ends: 394 [2021-10-16 02:26:17,015 INFO L226 Difference]: Without dead ends: 337 [2021-10-16 02:26:17,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:17,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-16 02:26:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-10-16 02:26:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 185 states have internal predecessors, (269), 0 states have call successors, (0), 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 02:26:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2021-10-16 02:26:17,043 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2021-10-16 02:26:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:17,043 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2021-10-16 02:26:17,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2021-10-16 02:26:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:26:17,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:17,046 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, 1, 1] [2021-10-16 02:26:17,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:17,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,261 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-10-16 02:26:17,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:17,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852558771] [2021-10-16 02:26:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:17,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:17,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:17,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:26:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:17,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:26:17,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:17,471 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 02:26:17,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:17,533 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 02:26:17,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:17,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852558771] [2021-10-16 02:26:17,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852558771] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:17,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:17,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:26:17,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260779980] [2021-10-16 02:26:17,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:26:17,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:26:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:26:17,537 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:17,660 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2021-10-16 02:26:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:26:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-16 02:26:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:17,666 INFO L225 Difference]: With dead ends: 378 [2021-10-16 02:26:17,666 INFO L226 Difference]: Without dead ends: 295 [2021-10-16 02:26:17,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-16 02:26:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2021-10-16 02:26:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.474264705882353) internal successors, (401), 277 states have internal predecessors, (401), 0 states have call successors, (0), 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 02:26:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2021-10-16 02:26:17,712 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2021-10-16 02:26:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:17,713 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2021-10-16 02:26:17,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2021-10-16 02:26:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:26:17,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:17,722 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, 1, 1] [2021-10-16 02:26:17,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:17,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-10-16 02:26:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:17,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316882376] [2021-10-16 02:26:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:17,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:17,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:17,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:26:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:18,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:26:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:18,133 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 02:26:18,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:18,222 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 02:26:18,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:18,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316882376] [2021-10-16 02:26:18,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316882376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:18,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:18,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:26:18,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112306146] [2021-10-16 02:26:18,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:18,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:18,226 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:18,428 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-10-16 02:26:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:26:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-16 02:26:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:18,432 INFO L225 Difference]: With dead ends: 395 [2021-10-16 02:26:18,432 INFO L226 Difference]: Without dead ends: 318 [2021-10-16 02:26:18,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:26:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-16 02:26:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2021-10-16 02:26:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.4484126984126984) internal successors, (365), 257 states have internal predecessors, (365), 0 states have call successors, (0), 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 02:26:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2021-10-16 02:26:18,453 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2021-10-16 02:26:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:18,453 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2021-10-16 02:26:18,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 02:26:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2021-10-16 02:26:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:26:18,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:18,457 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, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:18,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:18,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:18,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-10-16 02:26:18,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:18,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259696557] [2021-10-16 02:26:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:18,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:18,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:18,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:18,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:26:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:18,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:26:18,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:18,942 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 02:26:18,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:19,045 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 02:26:19,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:19,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259696557] [2021-10-16 02:26:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259696557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:19,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:19,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-16 02:26:19,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803248535] [2021-10-16 02:26:19,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:26:19,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:26:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:19,052 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:19,373 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2021-10-16 02:26:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:26:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:26:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:19,381 INFO L225 Difference]: With dead ends: 402 [2021-10-16 02:26:19,381 INFO L226 Difference]: Without dead ends: 354 [2021-10-16 02:26:19,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:26:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-16 02:26:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2021-10-16 02:26:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.43801652892562) internal successors, (348), 247 states have internal predecessors, (348), 0 states have call successors, (0), 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 02:26:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-10-16 02:26:19,406 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2021-10-16 02:26:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:19,407 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-10-16 02:26:19,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-10-16 02:26:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:26:19,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:19,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:19,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:26:19,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:19,623 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-16 02:26:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:19,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223377390] [2021-10-16 02:26:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:19,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:19,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:19,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:26:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:26:19,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:19,876 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 02:26:19,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:19,979 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 02:26:19,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:19,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223377390] [2021-10-16 02:26:19,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223377390] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:19,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:19,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:26:19,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128606530] [2021-10-16 02:26:19,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:19,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:19,982 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:20,038 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2021-10-16 02:26:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:26:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:26:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:20,044 INFO L225 Difference]: With dead ends: 456 [2021-10-16 02:26:20,044 INFO L226 Difference]: Without dead ends: 381 [2021-10-16 02:26:20,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-16 02:26:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2021-10-16 02:26:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.3914473684210527) internal successors, (423), 309 states have internal predecessors, (423), 0 states have call successors, (0), 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 02:26:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2021-10-16 02:26:20,063 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2021-10-16 02:26:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:20,064 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2021-10-16 02:26:20,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2021-10-16 02:26:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:26:20,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:20,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:20,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 02:26:20,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:20,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-16 02:26:20,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:20,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586307773] [2021-10-16 02:26:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:20,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:20,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:20,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:20,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:26:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:20,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:26:20,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:20,585 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 02:26:20,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:20,695 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 02:26:20,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:20,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586307773] [2021-10-16 02:26:20,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586307773] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:20,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:20,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-16 02:26:20,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826335179] [2021-10-16 02:26:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:26:20,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:26:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:20,699 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 02:26:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:21,365 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2021-10-16 02:26:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:26:21,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 02:26:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:21,376 INFO L225 Difference]: With dead ends: 912 [2021-10-16 02:26:21,377 INFO L226 Difference]: Without dead ends: 805 [2021-10-16 02:26:21,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 188.3ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:26:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-10-16 02:26:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2021-10-16 02:26:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 445 states have internal predecessors, (608), 0 states have call successors, (0), 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 02:26:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2021-10-16 02:26:21,421 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2021-10-16 02:26:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:21,422 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2021-10-16 02:26:21,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 02:26:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2021-10-16 02:26:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:26:21,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:21,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:21,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:21,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2021-10-16 02:26:21,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:21,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000145586] [2021-10-16 02:26:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:21,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:21,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:21,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:26:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:21,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:26:21,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:22,037 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 02:26:22,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:22,165 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 02:26:22,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:22,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000145586] [2021-10-16 02:26:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000145586] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:22,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:22,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-16 02:26:22,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435511853] [2021-10-16 02:26:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 02:26:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 02:26:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:26:22,167 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:26:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:23,171 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2021-10-16 02:26:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-16 02:26:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:26:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:23,177 INFO L225 Difference]: With dead ends: 746 [2021-10-16 02:26:23,177 INFO L226 Difference]: Without dead ends: 705 [2021-10-16 02:26:23,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 458.1ms TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-10-16 02:26:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-16 02:26:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2021-10-16 02:26:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3804100227790432) internal successors, (606), 443 states have internal predecessors, (606), 0 states have call successors, (0), 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 02:26:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2021-10-16 02:26:23,217 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2021-10-16 02:26:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:23,218 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2021-10-16 02:26:23,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:26:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2021-10-16 02:26:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:26:23,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:23,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:23,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:23,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:23,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2021-10-16 02:26:23,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:23,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422285926] [2021-10-16 02:26:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:23,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:23,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:23,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:26:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:23,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:26:23,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:23,726 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 02:26:23,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:23,801 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 02:26:23,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:23,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422285926] [2021-10-16 02:26:23,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422285926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:23,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:23,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:26:23,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605375586] [2021-10-16 02:26:23,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:23,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:23,803 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:26:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:23,883 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2021-10-16 02:26:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:26:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:26:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:23,887 INFO L225 Difference]: With dead ends: 501 [2021-10-16 02:26:23,888 INFO L226 Difference]: Without dead ends: 496 [2021-10-16 02:26:23,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-16 02:26:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2021-10-16 02:26:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 443 states have internal predecessors, (601), 0 states have call successors, (0), 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 02:26:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2021-10-16 02:26:23,938 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2021-10-16 02:26:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:23,939 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2021-10-16 02:26:23,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:26:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2021-10-16 02:26:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:26:23,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:23,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:23,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:24,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:24,153 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2021-10-16 02:26:24,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:24,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569152867] [2021-10-16 02:26:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:24,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:24,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:24,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:26:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:24,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:26:24,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:24,462 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 02:26:24,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:24,550 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 02:26:24,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:24,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569152867] [2021-10-16 02:26:24,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569152867] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:24,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:24,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:26:24,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74734343] [2021-10-16 02:26:24,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:24,555 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:24,677 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2021-10-16 02:26:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:26:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-16 02:26:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:24,683 INFO L225 Difference]: With dead ends: 901 [2021-10-16 02:26:24,683 INFO L226 Difference]: Without dead ends: 842 [2021-10-16 02:26:24,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-16 02:26:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2021-10-16 02:26:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 471 states have (on average 1.3715498938428874) internal successors, (646), 475 states have internal predecessors, (646), 0 states have call successors, (0), 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 02:26:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2021-10-16 02:26:24,727 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2021-10-16 02:26:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:24,728 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2021-10-16 02:26:24,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:26:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2021-10-16 02:26:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:26:24,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:24,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:24,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:24,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:24,942 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:26:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:24,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2021-10-16 02:26:24,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:24,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246051163] [2021-10-16 02:26:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:24,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:24,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:24,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:24,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:26:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:25,174 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:26:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:26:25,281 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:26:25,281 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:26:25,282 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:26:25,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:25,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:25,510 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:26:25,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:26:25 BoogieIcfgContainer [2021-10-16 02:26:25,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:26:25,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:26:25,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:26:25,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:26:25,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:15" (3/4) ... [2021-10-16 02:26:25,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:26:25,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:26:25,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:26:25,694 INFO L168 Benchmark]: Toolchain (without parser) took 11708.30 ms. Allocated memory was 50.3 MB in the beginning and 100.7 MB in the end (delta: 50.3 MB). Free memory was 25.9 MB in the beginning and 35.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,695 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:25,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.54 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 48.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.45 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 45.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,697 INFO L168 Benchmark]: Boogie Preprocessor took 58.67 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,697 INFO L168 Benchmark]: RCFGBuilder took 790.57 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 41.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,698 INFO L168 Benchmark]: TraceAbstraction took 10168.25 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 40.1 MB in the end (delta: 543.8 kB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,698 INFO L168 Benchmark]: Witness Printer took 91.67 ms. Allocated memory is still 100.7 MB. Free memory was 40.1 MB in the beginning and 35.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:25,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.54 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 25.8 MB in the beginning and 48.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.45 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 45.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.67 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 790.57 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 41.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10168.25 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 40.1 MB in the end (delta: 543.8 kB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * Witness Printer took 91.67 ms. Allocated memory is still 100.7 MB. Free memory was 40.1 MB in the beginning and 35.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10014.5ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 34.6ms, AutomataDifference: 3185.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1434 SDtfs, 3939 SDslu, 5495 SDs, 0 SdLazy, 1126 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1411.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1010.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 338.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.2ms SsaConstructionTime, 378.7ms SatisfiabilityAnalysisTime, 2213.8ms InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 40 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:26:25,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ae210e-9b3b-462b-b46d-2d4289201382/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...