./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8 --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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ................................................................................................................................................................................................................................................................................................................................................................................................. 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8 --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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:01:46,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:01:46,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:01:46,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:01:46,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:01:46,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:01:46,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:01:46,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:01:46,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:01:46,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:01:46,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:01:46,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:01:46,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:01:46,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:01:46,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:01:46,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:01:46,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:01:46,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:01:46,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:01:46,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:01:46,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:01:46,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:01:46,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:01:46,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:01:46,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:01:46,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:01:46,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:01:46,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:01:46,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:01:46,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:01:46,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:01:46,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:01:46,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:01:46,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:01:46,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:01:46,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:01:46,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:01:46,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:01:46,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:01:46,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:01:46,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:01:46,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:01:46,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:01:46,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:01:46,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:01:46,925 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:01:46,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:01:46,926 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:01:46,926 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:01:46,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:01:46,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:01:46,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:01:46,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:01:46,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:01:46,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:01:46,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:01:46,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:01:46,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:01:46,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:01:46,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:01:46,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:01:46,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:01:46,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:01:46,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:01:46,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:01:46,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:01:46,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:01:46,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:01:46,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:01:46,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:01:46,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:01:46,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:01:46,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:01:46,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:01:46,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:01:46,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:01:46,936 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:01:46,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:01:46,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:01:46,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:01:46,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:01:46,938 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2021-10-13 07:01:47,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:01:47,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:01:47,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:01:47,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:01:47,235 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:01:47,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-13 07:01:47,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/79d229488/3c87a3a2a6ea4dffbb09ef83d74cb4c5/FLAG2f4e24fe6 [2021-10-13 07:01:47,819 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:01:47,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-13 07:01:47,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/79d229488/3c87a3a2a6ea4dffbb09ef83d74cb4c5/FLAG2f4e24fe6 [2021-10-13 07:01:48,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/79d229488/3c87a3a2a6ea4dffbb09ef83d74cb4c5 [2021-10-13 07:01:48,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:01:48,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:01:48,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:01:48,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:01:48,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:01:48,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c72040b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48, skipping insertion in model container [2021-10-13 07:01:48,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:01:48,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:01:48,397 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-13 07:01:48,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:01:48,423 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:01:48,437 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-13 07:01:48,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:01:48,459 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:01:48,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48 WrapperNode [2021-10-13 07:01:48,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:01:48,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:01:48,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:01:48,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:01:48,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:01:48,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:01:48,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:01:48,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:01:48,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:01:48,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:01:48,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:01:48,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:01:48,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (1/1) ... [2021-10-13 07:01:48,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:01:48,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:01:48,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:01:48,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:01:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:01:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:01:49,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:01:49,038 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-13 07:01:49,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:49 BoogieIcfgContainer [2021-10-13 07:01:49,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:01:49,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:01:49,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:01:49,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:01:49,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:48" (1/3) ... [2021-10-13 07:01:49,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d40bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:49, skipping insertion in model container [2021-10-13 07:01:49,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:48" (2/3) ... [2021-10-13 07:01:49,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d40bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:49, skipping insertion in model container [2021-10-13 07:01:49,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:49" (3/3) ... [2021-10-13 07:01:49,052 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2021-10-13 07:01:49,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:01:49,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 07:01:49,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:01:49,121 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 [2021-10-13 07:01:49,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-13 07:01:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 75 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:01:49,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:49,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:01:49,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash -255523899, now seen corresponding path program 1 times [2021-10-13 07:01:49,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:49,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806425641] [2021-10-13 07:01:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:49,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:49,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:49,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806425641] [2021-10-13 07:01:49,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806425641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:49,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:49,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:49,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270494064] [2021-10-13 07:01:49,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:01:49,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:01:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:01:49,520 INFO L87 Difference]: Start difference. First operand has 76 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 75 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:49,673 INFO L93 Difference]: Finished difference Result 140 states and 191 transitions. [2021-10-13 07:01:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:01:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:01:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:49,684 INFO L225 Difference]: With dead ends: 140 [2021-10-13 07:01:49,685 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 07:01:49,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 07:01:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-10-13 07:01:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.22) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-13 07:01:49,729 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 6 [2021-10-13 07:01:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:49,730 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-13 07:01:49,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-13 07:01:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:01:49,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:49,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:01:49,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:49,734 INFO L82 PathProgramCache]: Analyzing trace with hash -745175224, now seen corresponding path program 1 times [2021-10-13 07:01:49,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:49,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731168069] [2021-10-13 07:01:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:49,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:49,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:49,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731168069] [2021-10-13 07:01:49,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731168069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:49,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:49,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:01:49,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975900862] [2021-10-13 07:01:49,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:01:49,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:01:49,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:01:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:01:49,800 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:49,961 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-10-13 07:01:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:01:49,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:01:49,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:49,964 INFO L225 Difference]: With dead ends: 74 [2021-10-13 07:01:49,964 INFO L226 Difference]: Without dead ends: 55 [2021-10-13 07:01:49,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:01:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-13 07:01:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-13 07:01:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1875) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-10-13 07:01:49,975 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 8 [2021-10-13 07:01:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:49,975 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-10-13 07:01:49,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-10-13 07:01:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:01:49,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:49,977 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:49,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:01:49,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1867865087, now seen corresponding path program 1 times [2021-10-13 07:01:49,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:01:49,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095835961] [2021-10-13 07:01:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:49,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:01:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:50,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:01:50,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095835961] [2021-10-13 07:01:50,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095835961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:01:50,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242934093] [2021-10-13 07:01:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:50,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:01:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:01:50,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:01:50,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:01:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:01:50,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:50,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:01:50,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242934093] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:01:50,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1528125601] [2021-10-13 07:01:50,800 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-13 07:01:50,800 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:01:50,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:01:50,822 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:01:50,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:01:50,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:50,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:01:50,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:50,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 07:01:50,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:01:50,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:50,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:01:50,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-13 07:01:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:01:50,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:01:50,978 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 07:01:50,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 07:01:50,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:50,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:01:50,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:50,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:01:50,988 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:01:50,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:01:51,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:51,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:01:51,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 07:01:51,035 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:01:51,035 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:82 [2021-10-13 07:01:51,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:01:51,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:01:51,252 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:01:51,262 INFO L168 Benchmark]: Toolchain (without parser) took 3062.12 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.7 MB in the beginning and 62.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:51,262 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:01:51,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.60 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:51,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 73.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:51,267 INFO L168 Benchmark]: Boogie Preprocessor took 57.17 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:01:51,268 INFO L168 Benchmark]: RCFGBuilder took 435.86 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 58.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:51,269 INFO L168 Benchmark]: TraceAbstraction took 2217.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.0 MB in the beginning and 62.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:51,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.60 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 73.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.17 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.86 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 58.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2217.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.0 MB in the beginning and 62.9 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:01:51,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:01:53,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:01:53,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:01:53,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:01:53,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:01:53,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:01:53,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:01:53,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:01:53,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:01:53,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:01:53,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:01:53,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:01:53,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:01:53,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:01:53,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:01:53,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:01:53,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:01:53,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:01:53,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:01:53,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:01:53,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:01:53,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:01:53,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:01:53,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:01:53,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:01:53,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:01:53,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:01:53,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:01:53,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:01:53,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:01:53,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:01:53,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:01:53,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:01:53,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:01:53,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:01:53,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:01:53,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:01:53,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:01:53,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:01:54,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:01:54,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:01:54,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:01:54,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:01:54,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:01:54,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:01:54,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:01:54,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:01:54,063 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:01:54,063 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:01:54,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:01:54,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:01:54,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:01:54,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:01:54,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:01:54,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:01:54,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:01:54,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:01:54,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:01:54,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:01:54,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:01:54,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:01:54,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:01:54,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:01:54,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:01:54,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:01:54,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:01:54,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:01:54,070 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:01:54,070 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:01:54,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:01:54,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:01:54,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:01:54,071 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2021-10-13 07:01:54,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:01:54,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:01:54,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:01:54,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:01:54,557 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:01:54,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-13 07:01:54,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/f9932d3fa/a9cd13e8792743cb802b69707b898006/FLAG6325b94db [2021-10-13 07:01:55,232 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:01:55,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-13 07:01:55,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/f9932d3fa/a9cd13e8792743cb802b69707b898006/FLAG6325b94db [2021-10-13 07:01:55,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/data/f9932d3fa/a9cd13e8792743cb802b69707b898006 [2021-10-13 07:01:55,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:01:55,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:01:55,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:01:55,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:01:55,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:01:55,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69838fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55, skipping insertion in model container [2021-10-13 07:01:55,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:01:55,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:01:55,752 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-13 07:01:55,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:01:55,791 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:01:55,836 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_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-13 07:01:55,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:01:55,885 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:01:55,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55 WrapperNode [2021-10-13 07:01:55,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:01:55,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:01:55,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:01:55,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:01:55,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:01:55,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:01:55,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:01:55,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:01:55,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:55,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:56,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:56,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:01:56,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:01:56,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:01:56,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:01:56,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (1/1) ... [2021-10-13 07:01:56,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:01:56,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:01:56,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:01:56,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:01:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:01:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:01:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:01:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:01:56,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:01:56,410 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-13 07:01:56,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:56 BoogieIcfgContainer [2021-10-13 07:01:56,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:01:56,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:01:56,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:01:56,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:01:56,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:55" (1/3) ... [2021-10-13 07:01:56,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423b113b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:56, skipping insertion in model container [2021-10-13 07:01:56,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:55" (2/3) ... [2021-10-13 07:01:56,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423b113b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:56, skipping insertion in model container [2021-10-13 07:01:56,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:56" (3/3) ... [2021-10-13 07:01:56,439 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2021-10-13 07:01:56,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:01:56,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 07:01:56,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:01:56,508 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 [2021-10-13 07:01:56,508 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-13 07:01:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 79 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:01:56,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:56,533 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:56,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 119561572, now seen corresponding path program 1 times [2021-10-13 07:01:56,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:01:56,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809241188] [2021-10-13 07:01:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:56,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:01:56,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:01:56,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:01:56,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:01:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:56,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:01:56,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:56,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:56,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:01:56,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809241188] [2021-10-13 07:01:56,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809241188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:56,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:56,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:01:56,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061994531] [2021-10-13 07:01:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:01:56,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:01:56,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:01:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:01:56,785 INFO L87 Difference]: Start difference. First operand has 80 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 79 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:56,810 INFO L93 Difference]: Finished difference Result 156 states and 209 transitions. [2021-10-13 07:01:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:01:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:01:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:56,820 INFO L225 Difference]: With dead ends: 156 [2021-10-13 07:01:56,821 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:01:56,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:01:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:01:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 07:01:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-10-13 07:01:56,862 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 8 [2021-10-13 07:01:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:56,863 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-10-13 07:01:56,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-10-13 07:01:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:01:56,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:56,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:56,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:01:57,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:01:57,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash 119567532, now seen corresponding path program 1 times [2021-10-13 07:01:57,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:01:57,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233155986] [2021-10-13 07:01:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:57,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:01:57,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:01:57,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:01:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:01:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:01:57,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:57,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:57,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:01:57,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233155986] [2021-10-13 07:01:57,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233155986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:57,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:57,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:01:57,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343889181] [2021-10-13 07:01:57,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:01:57,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:01:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:01:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:01:57,340 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:57,719 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-10-13 07:01:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:01:57,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:01:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:57,728 INFO L225 Difference]: With dead ends: 161 [2021-10-13 07:01:57,729 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 07:01:57,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:01:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 07:01:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 106. [2021-10-13 07:01:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 105 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-10-13 07:01:57,772 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 8 [2021-10-13 07:01:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:57,773 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-10-13 07:01:57,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-10-13 07:01:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:01:57,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:57,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:57,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:01:57,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:01:57,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1059562897, now seen corresponding path program 1 times [2021-10-13 07:01:57,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:01:57,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094700610] [2021-10-13 07:01:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:57,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:01:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:01:57,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:01:58,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:01:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:58,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:01:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:58,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:58,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:01:58,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094700610] [2021-10-13 07:01:58,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094700610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:01:58,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:01:58,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 07:01:58,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746789497] [2021-10-13 07:01:58,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:01:58,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:01:58,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:01:58,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:01:58,340 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-10-13 07:01:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:58,879 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-10-13 07:01:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:01:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 10 [2021-10-13 07:01:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:58,881 INFO L225 Difference]: With dead ends: 145 [2021-10-13 07:01:58,881 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 07:01:58,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 195.3ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:01:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 07:01:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2021-10-13 07:01:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 88 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:01:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-10-13 07:01:58,897 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 10 [2021-10-13 07:01:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:58,898 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-10-13 07:01:58,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-10-13 07:01:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-10-13 07:01:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:01:58,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:58,899 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:58,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:01:59,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:01:59,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:01:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1370730866, now seen corresponding path program 1 times [2021-10-13 07:01:59,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:01:59,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286413736] [2021-10-13 07:01:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:59,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:01:59,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:01:59,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:01:59,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:01:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:59,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:01:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:59,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:59,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:01:59,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286413736] [2021-10-13 07:01:59,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286413736] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:01:59,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [404053316] [2021-10-13 07:01:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:59,478 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:01:59,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:01:59,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:01:59,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:01:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:59,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:01:59,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:01:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:59,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:01:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:01:59,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [404053316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:01:59,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052500342] [2021-10-13 07:01:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:59,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:01:59,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:01:59,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:01:59,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:01:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:01:59,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:01:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:00,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052500342] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:00,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:02:00,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 9] total 16 [2021-10-13 07:02:00,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495153581] [2021-10-13 07:02:00,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:02:00,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:02:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:02:00,408 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:01,424 INFO L93 Difference]: Finished difference Result 267 states and 301 transitions. [2021-10-13 07:02:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 07:02:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 07:02:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:01,427 INFO L225 Difference]: With dead ends: 267 [2021-10-13 07:02:01,427 INFO L226 Difference]: Without dead ends: 257 [2021-10-13 07:02:01,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 565.7ms TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2021-10-13 07:02:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-13 07:02:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 191. [2021-10-13 07:02:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 181 states have (on average 1.2486187845303867) internal successors, (226), 190 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2021-10-13 07:02:01,451 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 23 [2021-10-13 07:02:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:01,452 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2021-10-13 07:02:01,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2021-10-13 07:02:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:02:01,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:01,454 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:01,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:01,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:01,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:02:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:02,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:02:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:02,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1282440907, now seen corresponding path program 1 times [2021-10-13 07:02:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:02,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398009099] [2021-10-13 07:02:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:02,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:02,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:02,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:02:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:02:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:02,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:02:03,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:03,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398009099] [2021-10-13 07:02:03,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398009099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:03,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1789179162] [2021-10-13 07:02:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:03,002 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:02:03,009 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:02:03,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:02:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:03,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:02:03,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:03,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:04,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1789179162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:04,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87974720] [2021-10-13 07:02:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:04,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:02:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:04,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:02:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:02:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:04,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:02:04,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:05,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:06,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87974720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:06,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:02:06,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 10, 9, 12, 13] total 35 [2021-10-13 07:02:06,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730307427] [2021-10-13 07:02:06,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 07:02:06,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 07:02:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 07:02:06,427 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:08,486 INFO L93 Difference]: Finished difference Result 195 states and 230 transitions. [2021-10-13 07:02:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:02:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:02:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:08,488 INFO L225 Difference]: With dead ends: 195 [2021-10-13 07:02:08,488 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 07:02:08,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2141.4ms TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 07:02:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 07:02:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-10-13 07:02:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.1395348837209303) internal successors, (196), 176 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 196 transitions. [2021-10-13 07:02:08,509 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 196 transitions. Word has length 25 [2021-10-13 07:02:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:08,509 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 196 transitions. [2021-10-13 07:02:08,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 196 transitions. [2021-10-13 07:02:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:02:08,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:08,513 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:08,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:08,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-13 07:02:08,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:09,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:09,116 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 07:02:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1346007246, now seen corresponding path program 2 times [2021-10-13 07:02:09,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:09,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960787271] [2021-10-13 07:02:09,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:02:09,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:09,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:09,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:02:09,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:02:09,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:02:09,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:02:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:09,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:09,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:09,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960787271] [2021-10-13 07:02:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960787271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [599858347] [2021-10-13 07:02:09,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:02:09,885 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:09,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:02:09,890 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:02:09,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:02:10,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:02:10,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:02:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:02:10,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:10,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [599858347] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:10,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544035993] [2021-10-13 07:02:10,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:02:10,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:02:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:10,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:02:10,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 07:02:10,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:02:10,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:02:10,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 07:02:10,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:11,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:02:11,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544035993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:11,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:02:11,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 17, 9] total 33 [2021-10-13 07:02:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380243818] [2021-10-13 07:02:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 07:02:11,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 07:02:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 07:02:11,867 INFO L87 Difference]: Start difference. First operand 177 states and 196 transitions. Second operand has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:14,720 INFO L93 Difference]: Finished difference Result 388 states and 463 transitions. [2021-10-13 07:02:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 07:02:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 0 states have call successors, (0), 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 51 [2021-10-13 07:02:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:14,722 INFO L225 Difference]: With dead ends: 388 [2021-10-13 07:02:14,722 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:02:14,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1584.3ms TimeCoverageRelationStatistics Valid=1326, Invalid=3366, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 07:02:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:02:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:02:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:02:14,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-10-13 07:02:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:14,727 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:02:14,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:02:14,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:02:14,731 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,731 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,732 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:14,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-13 07:02:14,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:15,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:15,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:15,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:02:15,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:15,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:16,803 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,803 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,803 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-13 07:02:16,803 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,803 INFO L857 garLoopResultBuilder]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L853 garLoopResultBuilder]: At program point L18-26(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,804 INFO L857 garLoopResultBuilder]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L853 garLoopResultBuilder]: At program point L18-29(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,804 INFO L857 garLoopResultBuilder]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,804 INFO L853 garLoopResultBuilder]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,805 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,806 INFO L853 garLoopResultBuilder]: At program point L18-38(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,806 INFO L857 garLoopResultBuilder]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,806 INFO L857 garLoopResultBuilder]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,806 INFO L857 garLoopResultBuilder]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,806 INFO L857 garLoopResultBuilder]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,806 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,807 INFO L853 garLoopResultBuilder]: At program point L18-41(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,807 INFO L857 garLoopResultBuilder]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,807 INFO L857 garLoopResultBuilder]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,807 INFO L857 garLoopResultBuilder]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,807 INFO L857 garLoopResultBuilder]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,807 INFO L853 garLoopResultBuilder]: At program point L18-44(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-13 07:02:16,808 INFO L857 garLoopResultBuilder]: For program point L19-14(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,808 INFO L857 garLoopResultBuilder]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,808 INFO L857 garLoopResultBuilder]: For program point L19-15(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,808 INFO L860 garLoopResultBuilder]: At program point L18-47(lines 17 22) the Hoare annotation is: true [2021-10-13 07:02:16,808 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:02:16,808 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,809 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 68) no Hoare annotation was computed. [2021-10-13 07:02:16,809 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 54 68) no Hoare annotation was computed. [2021-10-13 07:02:16,809 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2021-10-13 07:02:16,809 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,809 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 63) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,810 INFO L860 garLoopResultBuilder]: At program point L76(lines 24 77) the Hoare annotation is: true [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-13 07:02:16,811 INFO L857 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L853 garLoopResultBuilder]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0)) [2021-10-13 07:02:16,812 INFO L857 garLoopResultBuilder]: For program point L48-3(lines 48 72) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:02:16,812 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 44) the Hoare annotation is: (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0)) (and (= ULTIMATE.start_main_~t~0 (_ bv0 32)) (bvsge (bvadd ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (_ bv1 32)))) [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point L32-3(lines 32 44) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 68) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 37) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-13 07:02:16,813 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,814 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~t~0 (_ bv0 32)) .cse0 (bvsge (bvadd ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (_ bv1 32))) (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) .cse0 (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)))) [2021-10-13 07:02:16,814 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,814 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,814 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,814 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,814 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,814 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,815 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-13 07:02:16,815 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-13 07:02:16,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:02:16,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:02:16 BoogieIcfgContainer [2021-10-13 07:02:16,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:02:16,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:02:16,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:02:16,844 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:02:16,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:56" (3/4) ... [2021-10-13 07:02:16,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:02:16,861 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-13 07:02:16,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:02:16,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:02:16,863 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:02:16,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:02:16,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:02:16,921 INFO L168 Benchmark]: Toolchain (without parser) took 21358.17 ms. Allocated memory was 62.9 MB in the beginning and 102.8 MB in the end (delta: 39.8 MB). Free memory was 42.6 MB in the beginning and 53.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,921 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:16,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.26 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 45.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.75 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:16,923 INFO L168 Benchmark]: Boogie Preprocessor took 44.75 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,923 INFO L168 Benchmark]: RCFGBuilder took 407.07 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 28.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,924 INFO L168 Benchmark]: TraceAbstraction took 20428.45 ms. Allocated memory was 62.9 MB in the beginning and 102.8 MB in the end (delta: 39.8 MB). Free memory was 28.2 MB in the beginning and 58.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,924 INFO L168 Benchmark]: Witness Printer took 76.12 ms. Allocated memory is still 102.8 MB. Free memory was 58.5 MB in the beginning and 53.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:16,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.26 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 45.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.75 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.75 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 407.07 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 28.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20428.45 ms. Allocated memory was 62.9 MB in the beginning and 102.8 MB in the end (delta: 39.8 MB). Free memory was 28.2 MB in the beginning and 58.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. * Witness Printer took 76.12 ms. Allocated memory is still 102.8 MB. Free memory was 58.5 MB in the beginning and 53.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 20329.1ms, OverallIterations: 6, TraceHistogramMax: 7, EmptinessCheckTime: 17.6ms, AutomataDifference: 6931.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1464.7ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 327 SDtfs, 2828 SDslu, 1489 SDs, 0 SdLazy, 2844 SolverSat, 1909 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3863.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 741 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 4558.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 122.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 123 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 156 NumberOfFragments, 225 HoareAnnotationTreeSize, 16 FomulaSimplifications, 7834 FormulaSimplificationTreeSizeReduction, 429.6ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 2266 FormulaSimplificationTreeSizeReductionInter, 1026.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 108.9ms SsaConstructionTime, 297.5ms SatisfiabilityAnalysisTime, 7338.4ms InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 622 ConstructedInterpolants, 1 QuantifiedInterpolants, 3071 SizeOfPredicates, 53 NumberOfNonLiveVariables, 644 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 164/978 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len)) && ~bvsle32(0bv32, t) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && !(cond == 0bv32)) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(t, tagbuf_len)) && ~bvsle32(0bv32, t)) || (t == 0bv32 && ~bvsge32(~bvadd64(tagbuf_len, 1bv32), 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((t == 0bv32 && cond == 1bv32) && ~bvsge32(~bvadd64(tagbuf_len, 1bv32), 1bv32)) || ((~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:02:16,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56f802b-9028-4fc0-a6f3-eb572c1cc6fd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...