./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 ............................................................................................................................................................................................................................................................................................................................................................................ 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_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:41,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:41,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:41,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:41,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:41,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:41,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:41,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:41,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:41,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:41,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:41,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:41,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:41,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:41,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:41,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:41,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:41,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:41,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:41,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:41,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:41,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:41,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:41,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:41,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:41,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:41,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:41,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:41,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:41,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:41,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:41,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:41,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:41,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:41,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:41,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:41,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:41,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:41,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:41,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:41,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:41,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:41,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:41,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:41,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:41,981 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:41,982 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:41,982 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:41,982 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:41,982 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:41,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:41,983 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:41,984 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:41,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:41,984 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:41,985 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:41,985 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:41,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:41,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:41,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:41,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:41,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:41,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:41,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:41,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:41,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:41,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:41,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:41,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:41,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:41,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:41,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:41,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:41,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:41,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:41,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:41,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:41,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:41,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:41,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:42,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:42,000 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_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 [2021-10-16 01:59:42,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:42,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:42,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:42,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:42,295 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:42,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-16 01:59:42,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/139d4b49a/04e3ceb9fb2e42c69dd1440156a6f073/FLAG42ea4b164 [2021-10-16 01:59:42,909 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:42,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-16 01:59:42,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/139d4b49a/04e3ceb9fb2e42c69dd1440156a6f073/FLAG42ea4b164 [2021-10-16 01:59:43,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/139d4b49a/04e3ceb9fb2e42c69dd1440156a6f073 [2021-10-16 01:59:43,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:43,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:43,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:43,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:43,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:43,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4ec150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43, skipping insertion in model container [2021-10-16 01:59:43,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:43,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:43,455 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_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-16 01:59:43,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:43,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:43,493 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_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-16 01:59:43,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:43,516 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:43,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43 WrapperNode [2021-10-16 01:59:43,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:43,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:43,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:43,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:43,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:43,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:43,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:43,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:43,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:43,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:43,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:43,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:43,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:43,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:43,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:44,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:44,179 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 01:59:44,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44 BoogieIcfgContainer [2021-10-16 01:59:44,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:44,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:44,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:44,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:43" (1/3) ... [2021-10-16 01:59:44,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bef530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (2/3) ... [2021-10-16 01:59:44,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bef530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44" (3/3) ... [2021-10-16 01:59:44,206 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-10-16 01:59:44,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:44,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 01:59:44,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:44,281 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 01:59:44,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 01:59:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 01:59:44,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:44,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 01:59:44,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2021-10-16 01:59:44,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:44,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196719641] [2021-10-16 01:59:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:44,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:44,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 01:59:44,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509923759] [2021-10-16 01:59:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:44,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:44,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:44,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:59:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:44,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:59:44,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:44,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:45,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:45,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196719641] [2021-10-16 01:59:45,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 01:59:45,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509923759] [2021-10-16 01:59:45,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509923759] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:45,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:45,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 01:59:45,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605752760] [2021-10-16 01:59:45,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:59:45,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:45,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:59:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:45,286 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) 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) [2021-10-16 01:59:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:47,742 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-16 01:59:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:59:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) 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 4 [2021-10-16 01:59:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:47,752 INFO L225 Difference]: With dead ends: 36 [2021-10-16 01:59:47,752 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 01:59:47,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2609.3ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-16 01:59:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 01:59:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 01:59:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-16 01:59:47,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-16 01:59:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:47,789 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-16 01:59:47,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) 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) [2021-10-16 01:59:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-16 01:59:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:59:47,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:47,791 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:47,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:47,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 01:59:48,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1160044347, now seen corresponding path program 1 times [2021-10-16 01:59:48,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:48,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342414530] [2021-10-16 01:59:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:48,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:48,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 01:59:48,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431294748] [2021-10-16 01:59:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:48,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:48,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:48,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 01:59:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:48,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:59:48,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:48,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:48,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:48,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342414530] [2021-10-16 01:59:48,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 01:59:48,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431294748] [2021-10-16 01:59:48,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431294748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:59:48,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [527818910] [2021-10-16 01:59:48,606 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 01:59:48,606 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:59:48,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:59:48,630 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:59:48,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:59:48,675 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-16 01:59:48,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:48,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 01:59:48,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:48,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 01:59:48,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-16 01:59:48,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:59:48,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:48,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:48,741 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:48,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:48,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:48,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:48,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 01:59:48,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:59:48,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:59:48,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:48,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:59:48,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:48,873 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-16 01:59:48,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-16 01:59:48,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:59:48,890 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:290, output treesize:144 [2021-10-16 01:59:48,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:49,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:49,104 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 01:59:49,108 INFO L168 Benchmark]: Toolchain (without parser) took 5819.79 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 72.4 MB in the beginning and 69.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:49,108 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 73.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:49,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.02 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 62.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:49,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.91 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 60.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:49,110 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 102.8 MB. Free memory was 60.7 MB in the beginning and 59.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:49,111 INFO L168 Benchmark]: RCFGBuilder took 601.42 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 59.5 MB in the beginning and 104.9 MB in the end (delta: -45.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:49,111 INFO L168 Benchmark]: TraceAbstraction took 4922.96 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 69.1 MB in the end (delta: 35.2 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:49,115 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 102.8 MB. Free memory is still 73.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 214.02 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 62.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.91 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 60.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 102.8 MB. Free memory was 60.7 MB in the beginning and 59.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 601.42 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 59.5 MB in the beginning and 104.9 MB in the end (delta: -45.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4922.96 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 69.1 MB in the end (delta: 35.2 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 01:59:49,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:51,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:51,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:51,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:51,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:51,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:51,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:51,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:51,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:51,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:51,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:51,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:51,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:51,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:51,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:51,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:51,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:51,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:51,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:51,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:51,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:51,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:51,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:51,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:51,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:51,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:51,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:51,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:51,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:51,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:51,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:51,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:51,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:51,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:51,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:51,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:51,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:51,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:51,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:51,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:51,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:51,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:51,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:51,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:51,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:51,876 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:51,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:51,877 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:51,877 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:51,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:51,878 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:51,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:51,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:51,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:51,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:51,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:51,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:51,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:51,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:51,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:51,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:51,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:51,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:51,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:51,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:51,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:51,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:51,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:51,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:51,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:51,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:51,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:51,886 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:51,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:51,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:51,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:51,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:51,888 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_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 [2021-10-16 01:59:52,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:52,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:52,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:52,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:52,349 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:52,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-16 01:59:52,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/715070496/1db7fb600ac840b4a064b573d1f800b7/FLAG08da2fe19 [2021-10-16 01:59:52,956 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:52,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-10-16 01:59:52,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/715070496/1db7fb600ac840b4a064b573d1f800b7/FLAG08da2fe19 [2021-10-16 01:59:53,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/data/715070496/1db7fb600ac840b4a064b573d1f800b7 [2021-10-16 01:59:53,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:53,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:53,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:53,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:53,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:53,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e081b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53, skipping insertion in model container [2021-10-16 01:59:53,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:53,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:53,533 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_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-16 01:59:53,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:53,575 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:53,612 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_1112ac33-054e-4f45-8edf-19da63c519b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-10-16 01:59:53,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:53,675 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:53,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53 WrapperNode [2021-10-16 01:59:53,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:53,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:53,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:53,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:53,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:53,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:53,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:53,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:53,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:53,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:53,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:53,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:53,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (1/1) ... [2021-10-16 01:59:53,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:53,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:53,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:53,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:55,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:55,925 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 01:59:55,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:55 BoogieIcfgContainer [2021-10-16 01:59:55,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:55,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:55,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:55,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:55,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:53" (1/3) ... [2021-10-16 01:59:55,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c3b9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:55, skipping insertion in model container [2021-10-16 01:59:55,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:53" (2/3) ... [2021-10-16 01:59:55,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c3b9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:55, skipping insertion in model container [2021-10-16 01:59:55,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:55" (3/3) ... [2021-10-16 01:59:55,937 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-10-16 01:59:55,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:55,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 01:59:56,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:56,008 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 01:59:56,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 01:59:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:56,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:56,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:56,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-16 01:59:56,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:56,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210691455] [2021-10-16 01:59:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:56,056 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:56,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:56,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:56,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:59:56,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:56,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:56,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:56,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210691455] [2021-10-16 01:59:56,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210691455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:56,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:56,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:59:56,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437487539] [2021-10-16 01:59:56,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:56,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:56,576 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:56,593 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-16 01:59:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:56,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-16 01:59:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:56,604 INFO L225 Difference]: With dead ends: 43 [2021-10-16 01:59:56,604 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 01:59:56,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 01:59:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-16 01:59:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-16 01:59:56,677 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-16 01:59:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:56,678 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-16 01:59:56,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-16 01:59:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:56,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:56,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:56,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:56,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:56,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-16 01:59:56,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:56,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968432009] [2021-10-16 01:59:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:56,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:56,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:56,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:59:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:57,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:01,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968432009] [2021-10-16 02:00:01,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968432009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:01,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:01,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:00:01,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506291701] [2021-10-16 02:00:01,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:00:01,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:00:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:00:01,835 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2021-10-16 02:00:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:16,318 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-16 02:00:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:00:16,377 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 9 [2021-10-16 02:00:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:16,378 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:00:16,379 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:00:16,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6817.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:00:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:00:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-16 02:00:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 02:00:16,391 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2021-10-16 02:00:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:16,391 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 02:00:16,392 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) [2021-10-16 02:00:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 02:00:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:00:16,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:16,393 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:16,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:16,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:16,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 1 times [2021-10-16 02:00:16,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:16,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425728878] [2021-10-16 02:00:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:16,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:16,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:16,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:00:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:17,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:00:17,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:23,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:00:55,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:55,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425728878] [2021-10-16 02:00:55,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425728878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:55,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1263911567] [2021-10-16 02:00:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:55,149 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:55,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:55,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:00:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:56,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:00:56,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:00,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:01:21,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1263911567] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:01:21,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85078528] [2021-10-16 02:01:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:21,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:01:21,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:01:21,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:01:21,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:01:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:21,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:01:21,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:25,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:01:44,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85078528] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:01:44,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:01:44,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 7, 4] total 9 [2021-10-16 02:01:44,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283414250] [2021-10-16 02:01:44,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:01:44,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:01:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:01:44,353 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:02:11,889 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-16 02:02:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:02:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:02:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:02:11,891 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:02:11,891 INFO L226 Difference]: Without dead ends: 36 [2021-10-16 02:02:11,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 64828.3ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:02:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-16 02:02:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2021-10-16 02:02:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-16 02:02:11,900 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-10-16 02:02:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:02:11,901 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-16 02:02:11,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:02:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-16 02:02:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:02:11,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:02:11,902 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:02:11,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:12,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:12,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:02:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:12,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:02:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:02:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-10-16 02:02:12,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:02:12,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656121166] [2021-10-16 02:02:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:12,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:02:12,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:02:12,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:02:12,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:02:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:13,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:02:13,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:14,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:26,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:02:26,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656121166] [2021-10-16 02:02:26,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656121166] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:26,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452399724] [2021-10-16 02:02:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:26,089 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:02:26,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:02:26,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:02:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:02:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:27,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:02:27,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:28,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:36,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452399724] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:36,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129377459] [2021-10-16 02:02:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:02:36,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:02:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:02:36,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:02:36,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:02:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:02:36,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:02:36,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:02:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:37,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:02:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:02:44,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129377459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:02:44,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:02:44,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 9, 6] total 16 [2021-10-16 02:02:44,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268850525] [2021-10-16 02:02:44,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:02:44,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:02:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:02:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:02:44,322 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:03:32,078 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-16 02:03:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 02:03:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:03:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:03:32,097 INFO L225 Difference]: With dead ends: 41 [2021-10-16 02:03:32,097 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:03:32,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 42722.3ms TimeCoverageRelationStatistics Valid=362, Invalid=898, Unknown=0, NotChecked=0, Total=1260 [2021-10-16 02:03:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:03:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 02:03:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-16 02:03:32,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2021-10-16 02:03:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:03:32,110 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-16 02:03:32,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:03:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-16 02:03:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:03:32,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:03:32,112 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:03:32,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:03:32,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-16 02:03:32,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:03:32,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:03:32,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:03:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:03:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash 728478426, now seen corresponding path program 2 times [2021-10-16 02:03:32,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:03:32,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981250024] [2021-10-16 02:03:32,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:03:32,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:03:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:03:32,726 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:03:32,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:03:34,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:03:34,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:03:34,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:03:34,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:03:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:03:36,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:06,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:06,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981250024] [2021-10-16 02:04:06,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981250024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:06,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1496347740] [2021-10-16 02:04:06,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:04:06,235 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:06,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:06,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:06,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:04:09,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:04:09,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:09,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:04:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:11,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:29,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1496347740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:29,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128948426] [2021-10-16 02:04:29,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:04:29,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:29,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:29,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:04:30,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:04:30,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:04:30,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:04:30,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:33,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:04:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:04:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128948426] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:04:45,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:04:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 9, 12, 9] total 28 [2021-10-16 02:04:45,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424281029] [2021-10-16 02:04:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-16 02:04:45,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:04:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-16 02:04:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=605, Unknown=1, NotChecked=0, Total=756 [2021-10-16 02:04:45,935 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:50,815 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-10-16 02:07:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:07,377 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-16 02:07:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-16 02:07:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:07:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:07,406 INFO L225 Difference]: With dead ends: 62 [2021-10-16 02:07:07,407 INFO L226 Difference]: Without dead ends: 48 [2021-10-16 02:07:07,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 136157.3ms TimeCoverageRelationStatistics Valid=805, Invalid=2734, Unknown=1, NotChecked=0, Total=3540 [2021-10-16 02:07:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-16 02:07:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-16 02:07:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-16 02:07:07,437 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 26 [2021-10-16 02:07:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:07,438 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-16 02:07:07,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-16 02:07:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-16 02:07:07,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:07,441 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:07,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:07,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:07,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-16 02:07:08,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:08,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2003072364, now seen corresponding path program 3 times [2021-10-16 02:07:08,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:08,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048461036] [2021-10-16 02:07:08,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:07:08,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:08,067 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:08,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:07:17,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-16 02:07:17,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:18,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:07:18,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 81 proven. 108 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:20,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 81 proven. 108 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:07:22,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:22,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048461036] [2021-10-16 02:07:22,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048461036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:22,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1117774872] [2021-10-16 02:07:22,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:07:22,490 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:22,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:22,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:22,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:07:31,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-16 02:07:31,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:07:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:36,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:22,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1117774872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:10:22,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838070868] [2021-10-16 02:10:22,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:10:22,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:10:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:10:22,755 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:10:22,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:10:28,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-16 02:10:28,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:10:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:10:28,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 108 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-16 02:10:36,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 132 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-16 02:11:00,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838070868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:11:00,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:11:00,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16, 16, 11, 12] total 66 [2021-10-16 02:11:00,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788111737] [2021-10-16 02:11:00,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-16 02:11:00,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:11:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-16 02:11:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=3524, Unknown=5, NotChecked=0, Total=4290 [2021-10-16 02:11:00,878 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 66 states, 66 states have (on average 2.9545454545454546) internal successors, (195), 66 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:11:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:11:21,513 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-10-16 02:11:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:11:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.9545454545454546) internal successors, (195), 66 states have internal predecessors, (195), 0 states have call successors, (0), 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 47 [2021-10-16 02:11:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:11:21,516 INFO L225 Difference]: With dead ends: 48 [2021-10-16 02:11:21,517 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:11:21,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1413 ImplicationChecksByTransitivity, 171736.5ms TimeCoverageRelationStatistics Valid=1201, Invalid=4800, Unknown=5, NotChecked=0, Total=6006 [2021-10-16 02:11:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:11:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:11:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:11:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:11:21,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-10-16 02:11:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:11:21,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:11:21,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.9545454545454546) internal successors, (195), 66 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:11:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:11:21,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:11:21,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:11:21,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:11:21,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:11:21,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:21,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-16 02:11:22,142 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2021-10-16 02:11:22,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:22,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:11:22,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:11:22,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:11:22,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:11:22,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:11:22,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:11:22,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:11:49,861 WARN L207 SmtUtils]: Spent 27.46 s on a formula simplification. DAG size of input: 137 DAG size of output: 81 [2021-10-16 02:12:15,252 WARN L207 SmtUtils]: Spent 25.39 s on a formula simplification. DAG size of input: 134 DAG size of output: 81 [2021-10-16 02:12:55,327 WARN L207 SmtUtils]: Spent 40.07 s on a formula simplification. DAG size of input: 150 DAG size of output: 61 [2021-10-16 02:12:55,329 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:12:55,330 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse10 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse16 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse12 ((_ sign_extend 32) .cse10))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse8 ((_ sign_extend 32) (_ bv0 32))) (.cse15 (= .cse16 (bvmul .cse12 ULTIMATE.start_main_~y~0)))) (let ((.cse5 (or .cse15 (bvslt ULTIMATE.start_main_~c~0 .cse12))) (.cse6 (bvsle .cse10 (_ bv5 32))) (.cse2 (= .cse8 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse16 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (.cse3 (or .cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv1 32)))) (or (let ((.cse1 (bvadd (bvmul (_ bv4 64) .cse7) .cse8))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 .cse1) .cse6)) (let ((.cse9 (bvadd .cse8 (bvmul (_ bv3 64) .cse7)))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse9) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~c~0 .cse9) .cse5 .cse6)) (and (= .cse8 ULTIMATE.start_main_~y~0) (= .cse8 ULTIMATE.start_main_~c~0) (= .cse8 ULTIMATE.start_main_~x~0) .cse0 (bvsge .cse10 (_ bv0 32)) .cse6) (let ((.cse11 (bvadd .cse8 .cse7))) (and (= ULTIMATE.start_main_~y~0 .cse11) .cse0 (= ULTIMATE.start_main_~c~0 .cse11) .cse2 .cse3 .cse4 (bvslt .cse8 .cse12) .cse6)) (let ((.cse13 (bvadd .cse8 (bvmul (_ bv2 64) .cse7)))) (and .cse0 (= .cse13 ULTIMATE.start_main_~c~0) .cse2 .cse3 .cse4 .cse5 (= .cse13 ULTIMATE.start_main_~y~0) .cse6)) (let ((.cse14 (bvadd .cse8 (bvmul (_ bv5 64) .cse7)))) (and (= ULTIMATE.start_main_~c~0 .cse14) .cse0 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~y~0 .cse14) .cse15))))))) [2021-10-16 02:12:55,331 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-16 02:12:55,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 02:12:55,331 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-10-16 02:12:55,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:12:55,331 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 02:12:55,331 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-16 02:12:55,331 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse16 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse12 ((_ sign_extend 32) .cse9))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse8 ((_ sign_extend 32) (_ bv0 32))) (.cse15 (= .cse16 (bvmul .cse12 ULTIMATE.start_main_~y~0)))) (let ((.cse5 (or .cse15 (bvslt ULTIMATE.start_main_~c~0 .cse12))) (.cse6 (bvsle .cse9 (_ bv5 32))) (.cse2 (= .cse8 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse16 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))))) (.cse3 (or .cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv1 32)))) (or (let ((.cse1 (bvadd (bvmul (_ bv4 64) .cse7) .cse8))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 .cse1) .cse6)) (and (= .cse8 ULTIMATE.start_main_~y~0) (= .cse8 ULTIMATE.start_main_~c~0) (= .cse8 ULTIMATE.start_main_~x~0) .cse0 (bvsge .cse9 (_ bv0 32)) .cse4 .cse6) (let ((.cse10 (bvadd .cse8 (bvmul (_ bv3 64) .cse7)))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse10) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~c~0 .cse10) .cse5 .cse6)) (let ((.cse11 (bvadd .cse8 .cse7))) (and (= ULTIMATE.start_main_~y~0 .cse11) .cse0 (= ULTIMATE.start_main_~c~0 .cse11) .cse2 .cse3 .cse4 (bvslt .cse8 .cse12) .cse6)) (let ((.cse13 (bvadd .cse8 (bvmul (_ bv2 64) .cse7)))) (and .cse0 (= .cse13 ULTIMATE.start_main_~c~0) .cse2 .cse3 .cse4 .cse5 (= .cse13 ULTIMATE.start_main_~y~0) .cse6)) (let ((.cse14 (bvadd .cse8 (bvmul (_ bv5 64) .cse7)))) (and (= ULTIMATE.start_main_~c~0 .cse14) .cse0 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~y~0 .cse14) .cse15))))))) [2021-10-16 02:12:55,332 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-16 02:12:55,332 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-16 02:12:55,332 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-10-16 02:12:55,332 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~x~0) .cse1) (let ((.cse2 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse5 ((_ sign_extend 32) .cse2))) (let ((.cse4 (bvmul .cse5 ULTIMATE.start_main_~y~0)) (.cse3 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge .cse2 (_ bv0 32)) (= .cse0 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) .cse3 (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) .cse1 (= .cse3 .cse4) (let ((.cse6 ((_ sign_extend 32) (_ bv1 32)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse5)) (= (bvadd (bvmul .cse5 .cse6) .cse4) (bvadd .cse3 (bvmul (_ bv2 64) (bvmul .cse6 ULTIMATE.start_main_~y~0)) (bvmul .cse6 .cse6))) (bvslt (bvadd .cse6 ULTIMATE.start_main_~c~0) .cse5))) (bvsle .cse2 (_ bv5 32)))))))) [2021-10-16 02:12:55,333 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-16 02:12:55,333 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-16 02:12:55,337 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:12:55,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:12:55 BoogieIcfgContainer [2021-10-16 02:12:55,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:12:55,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:12:55,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:12:55,389 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:12:55,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:55" (3/4) ... [2021-10-16 02:12:55,392 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:12:55,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-16 02:12:55,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:12:55,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:12:55,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:12:55,453 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:12:55,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:12:55,455 INFO L168 Benchmark]: Toolchain (without parser) took 782126.27 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 45.1 MB in the beginning and 31.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,455 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:55,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.63 ms. Allocated memory is still 79.7 MB. Free memory was 44.9 MB in the beginning and 63.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 79.7 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:55,457 INFO L168 Benchmark]: Boogie Preprocessor took 68.82 ms. Allocated memory is still 79.7 MB. Free memory was 62.0 MB in the beginning and 60.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,457 INFO L168 Benchmark]: RCFGBuilder took 2138.37 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 50.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,457 INFO L168 Benchmark]: TraceAbstraction took 779458.53 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 36.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,458 INFO L168 Benchmark]: Witness Printer took 65.12 ms. Allocated memory is still 100.7 MB. Free memory was 36.5 MB in the beginning and 31.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:55,460 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 79.7 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.63 ms. Allocated memory is still 79.7 MB. Free memory was 44.9 MB in the beginning and 63.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 79.7 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.82 ms. Allocated memory is still 79.7 MB. Free memory was 62.0 MB in the beginning and 60.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2138.37 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 50.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 779458.53 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 36.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. * Witness Printer took 65.12 ms. Allocated memory is still 100.7 MB. Free memory was 36.5 MB in the beginning and 31.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 779339.3ms, OverallIterations: 6, TraceHistogramMax: 12, EmptinessCheckTime: 16.5ms, AutomataDifference: 252028.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 93177.1ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 341 SDslu, 328 SDs, 0 SdLazy, 797 SolverSat, 402 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 68964.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 712 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2711 ImplicationChecksByTransitivity, 422261.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 80.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 26 NumberOfFragments, 1083 HoareAnnotationTreeSize, 5 FomulaSimplifications, 825 FormulaSimplificationTreeSizeReduction, 239.3ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 4042 FormulaSimplificationTreeSizeReductionInter, 92929.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 143.9ms SsaConstructionTime, 35631.2ms SatisfiabilityAnalysisTime, 392929.4ms InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 638 ConstructedInterpolants, 9 QuantifiedInterpolants, 11199 SizeOfPredicates, 66 NumberOfNonLiveVariables, 931 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 525/1428 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 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((((cond == 1bv32 && y == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && c == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) || ((((((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && cond == 1bv32) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((((cond == 1bv32 && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((((cond == 1bv32 && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == y) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || ((((((c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && ~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((cond == 1bv32 && y == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && c == ~bvadd16(~bvmul64(4bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(0bv32))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) || (((((((cond == 1bv32 && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(3bv64, ~sign_extendFrom8To32(1bv32)))) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || (((((((cond == 1bv32 && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == c) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && (~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32))) == y) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32))) || ((((((c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32))) && cond == 1bv32) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && (cond == 1bv32 || cond == 0bv32)) && cond == 1bv32) && y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~bvmul64(5bv64, ~sign_extendFrom8To32(1bv32)))) && ~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) || ((((((cond == 1bv32 && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && cond == 1bv32) && ~bvmul64(y, y) == ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) && ((!~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) || ~bvadd16(~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~sign_extendFrom8To32(~sign_extendFrom8To32(k)), y)) == ~bvadd16(~bvmul64(y, y), ~bvmul64(2bv64, ~bvmul64(~sign_extendFrom8To32(1bv32), y)), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)))) || ~bvslt64(~bvadd16(~sign_extendFrom8To32(1bv32), c), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:12:55,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1112ac33-054e-4f45-8edf-19da63c519b3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...