./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:28:59,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:59,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:59,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:59,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:59,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:59,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:59,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:59,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:59,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:59,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:59,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:59,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:59,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:59,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:59,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:59,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:59,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:59,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:59,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:59,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:59,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:59,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:59,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:59,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:59,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:59,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:59,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:59,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:59,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:59,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:59,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:59,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:59,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:59,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:59,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:59,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:59,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:59,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:59,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:59,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:59,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:28:59,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:59,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:59,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:59,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:59,333 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:59,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:59,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:59,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:28:59,334 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:59,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:59,335 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:28:59,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:28:59,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:59,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:28:59,336 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:28:59,336 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:28:59,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:28:59,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:28:59,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:59,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:28:59,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:28:59,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:28:59,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:28:59,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:59,339 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:28:59,339 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:28:59,341 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:28:59,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:59,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:59,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:28:59,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:59,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:59,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:59,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:59,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:59,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:59,343 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:28:59,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:28:59,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:59,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:59,344 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2021-11-19 14:28:59,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:59,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:59,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:59,636 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:59,637 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:59,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-19 14:28:59,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/b4f64019d/722422b975f145b6bf8427e6aa8006b8/FLAG59ac1d6b0 [2021-11-19 14:29:00,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:00,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-19 14:29:00,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/b4f64019d/722422b975f145b6bf8427e6aa8006b8/FLAG59ac1d6b0 [2021-11-19 14:29:00,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/b4f64019d/722422b975f145b6bf8427e6aa8006b8 [2021-11-19 14:29:00,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:00,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:00,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:00,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:00,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:00,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:00" (1/1) ... [2021-11-19 14:29:00,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5536e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:00, skipping insertion in model container [2021-11-19 14:29:00,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:00" (1/1) ... [2021-11-19 14:29:00,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:00,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:01,204 WARN L230 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-19 14:29:01,355 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:01,364 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:29:01,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c89a36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:01, skipping insertion in model container [2021-11-19 14:29:01,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:01,365 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:29:01,367 INFO L158 Benchmark]: Toolchain (without parser) took 763.67ms. Allocated memory is still 90.2MB. Free memory was 55.4MB in the beginning and 56.1MB in the end (delta: -679.5kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:29:01,368 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:29:01,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.32ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 56.1MB in the end (delta: -846.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:29:01,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.32ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 56.1MB in the end (delta: -846.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:29:03,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:29:03,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:29:03,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:29:03,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:29:03,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:29:03,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:29:03,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:29:03,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:29:03,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:29:03,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:29:03,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:29:03,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:29:03,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:29:03,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:29:03,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:29:03,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:29:03,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:29:03,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:29:03,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:29:03,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:29:03,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:29:03,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:29:03,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:29:03,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:29:03,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:29:03,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:29:03,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:29:03,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:29:03,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:29:03,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:29:03,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:29:03,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:29:03,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:29:03,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:29:03,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:29:03,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:29:03,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:29:03,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:29:03,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:29:03,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:29:03,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:29:03,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:29:03,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:29:03,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:29:03,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:29:03,776 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:29:03,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:29:03,777 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:29:03,777 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:29:03,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:29:03,777 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:29:03,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:29:03,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:29:03,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:29:03,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:29:03,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:29:03,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:29:03,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:29:03,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:29:03,782 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:29:03,782 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:29:03,782 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:29:03,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:29:03,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:29:03,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:29:03,783 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:29:03,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:29:03,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:29:03,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:29:03,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:29:03,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:29:03,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:03,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:29:03,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:29:03,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:29:03,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:29:03,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:29:03,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:29:03,786 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2021-11-19 14:29:04,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:29:04,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:29:04,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:29:04,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:29:04,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:29:04,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-19 14:29:04,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/f330ec3af/1b6223b2f46143f2b1fb6927d7d6ac06/FLAG74c5e5d86 [2021-11-19 14:29:05,079 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:29:05,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-19 14:29:05,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/f330ec3af/1b6223b2f46143f2b1fb6927d7d6ac06/FLAG74c5e5d86 [2021-11-19 14:29:05,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/data/f330ec3af/1b6223b2f46143f2b1fb6927d7d6ac06 [2021-11-19 14:29:05,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:29:05,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:29:05,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:05,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:29:05,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:29:05,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:05" (1/1) ... [2021-11-19 14:29:05,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cf3c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:05, skipping insertion in model container [2021-11-19 14:29:05,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:29:05" (1/1) ... [2021-11-19 14:29:05,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:29:05,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:05,682 WARN L230 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-19 14:29:05,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:05,839 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:29:05,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:29:05,883 WARN L230 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-19 14:29:06,012 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:06,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:29:06,096 WARN L230 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_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-19 14:29:06,168 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:29:06,219 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:29:06,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06 WrapperNode [2021-11-19 14:29:06,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:29:06,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:06,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:29:06,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:29:06,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,393 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2021-11-19 14:29:06,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:29:06,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:29:06,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:29:06,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:29:06,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:29:06,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:29:06,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:29:06,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:29:06,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (1/1) ... [2021-11-19 14:29:06,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:29:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:29:06,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:29:06,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:29:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:29:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:29:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:29:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:29:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:29:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:29:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:29:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:29:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:29:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:29:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:29:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:29:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:29:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:29:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:29:06,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:29:06,914 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:29:06,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:29:06,932 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:29:13,292 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:29:13,319 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:29:13,321 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-19 14:29:13,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:13 BoogieIcfgContainer [2021-11-19 14:29:13,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:29:13,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:29:13,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:29:13,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:29:13,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:29:05" (1/3) ... [2021-11-19 14:29:13,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3983fe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:13, skipping insertion in model container [2021-11-19 14:29:13,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:29:06" (2/3) ... [2021-11-19 14:29:13,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3983fe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:29:13, skipping insertion in model container [2021-11-19 14:29:13,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:29:13" (3/3) ... [2021-11-19 14:29:13,336 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2021-11-19 14:29:13,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:29:13,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-19 14:29:13,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:29:13,423 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-19 14:29:13,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-19 14:29:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:29:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:29:13,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:13,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:29:13,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-19 14:29:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:13,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234981413] [2021-11-19 14:29:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:13,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:13,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:13,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:13,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:29:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:13,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:29:13,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:13,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:13,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:13,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234981413] [2021-11-19 14:29:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234981413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:13,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:13,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:29:13,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754743949] [2021-11-19 14:29:13,811 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:13,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:29:13,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:29:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:29:13,857 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 14:29:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:13,990 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-19 14:29:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:29:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-19 14:29:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:14,021 INFO L225 Difference]: With dead ends: 1256 [2021-11-19 14:29:14,021 INFO L226 Difference]: Without dead ends: 1254 [2021-11-19 14:29:14,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:29:14,027 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:14,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:29:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-19 14:29:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-19 14:29:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:29:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-19 14:29:14,175 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-19 14:29:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:14,175 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-19 14:29:14,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-19 14:29:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-19 14:29:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:29:14,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:14,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:29:14,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:29:14,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:14,378 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-19 14:29:14,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:14,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659358916] [2021-11-19 14:29:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:14,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:14,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:29:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:14,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:14,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:14,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:14,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:14,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659358916] [2021-11-19 14:29:14,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659358916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:14,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:14,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:29:14,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107632535] [2021-11-19 14:29:14,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:14,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:29:14,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:29:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:14,637 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-19 14:29:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:17,574 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-19 14:29:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:29:17,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-19 14:29:17,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:17,584 INFO L225 Difference]: With dead ends: 1291 [2021-11-19 14:29:17,584 INFO L226 Difference]: Without dead ends: 1291 [2021-11-19 14:29:17,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:17,586 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:17,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:29:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-19 14:29:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-19 14:29:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:29:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-19 14:29:17,630 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-19 14:29:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:17,630 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-19 14:29:17,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-19 14:29:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-19 14:29:17,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:29:17,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:17,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:29:17,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:17,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:17,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-19 14:29:17,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:17,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26541391] [2021-11-19 14:29:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:17,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:17,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:17,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:17,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:29:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:17,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:17,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:18,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:18,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:18,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:18,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26541391] [2021-11-19 14:29:18,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26541391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:18,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:18,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:29:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657141705] [2021-11-19 14:29:18,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:18,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:18,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:18,105 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:26,339 INFO L93 Difference]: Finished difference Result 1591 states and 1745 transitions. [2021-11-19 14:29:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:29:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:26,351 INFO L225 Difference]: With dead ends: 1591 [2021-11-19 14:29:26,352 INFO L226 Difference]: Without dead ends: 1591 [2021-11-19 14:29:26,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:26,354 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 615 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:26,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1824 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-19 14:29:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2021-11-19 14:29:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1393. [2021-11-19 14:29:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:29:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-19 14:29:26,407 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-19 14:29:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:26,407 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-19 14:29:26,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-19 14:29:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:29:26,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:26,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:29:26,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:26,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:26,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-19 14:29:26,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:26,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970253852] [2021-11-19 14:29:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:26,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:26,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:26,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:29:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:26,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:26,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:26,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:26,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970253852] [2021-11-19 14:29:26,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970253852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:26,795 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:26,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:29:26,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652832750] [2021-11-19 14:29:26,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:26,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:26,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:26,797 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:26,941 INFO L93 Difference]: Finished difference Result 2738 states and 3284 transitions. [2021-11-19 14:29:26,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:26,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 14:29:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:26,960 INFO L225 Difference]: With dead ends: 2738 [2021-11-19 14:29:26,960 INFO L226 Difference]: Without dead ends: 2738 [2021-11-19 14:29:26,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:26,961 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 2286 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:26,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 2961 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:29:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-19 14:29:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2209. [2021-11-19 14:29:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1662 states have (on average 1.9494584837545126) internal successors, (3240), 2194 states have internal predecessors, (3240), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3284 transitions. [2021-11-19 14:29:27,055 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3284 transitions. Word has length 6 [2021-11-19 14:29:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:27,055 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3284 transitions. [2021-11-19 14:29:27,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3284 transitions. [2021-11-19 14:29:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:29:27,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:27,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:27,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:27,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:27,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-19 14:29:27,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:27,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769725928] [2021-11-19 14:29:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:27,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:27,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:27,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:29:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:27,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:27,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:27,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:27,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769725928] [2021-11-19 14:29:27,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769725928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:27,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:27,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:29:27,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948257336] [2021-11-19 14:29:27,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:27,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:27,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:27,498 INFO L87 Difference]: Start difference. First operand 2209 states and 3284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-19 14:29:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:27,552 INFO L93 Difference]: Finished difference Result 2149 states and 3198 transitions. [2021-11-19 14:29:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:29:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 14:29:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:27,569 INFO L225 Difference]: With dead ends: 2149 [2021-11-19 14:29:27,569 INFO L226 Difference]: Without dead ends: 2149 [2021-11-19 14:29:27,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:27,571 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:27,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1243 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:29:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-19 14:29:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2021-11-19 14:29:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1626 states have (on average 1.9397293972939729) internal successors, (3154), 2134 states have internal predecessors, (3154), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3198 transitions. [2021-11-19 14:29:27,647 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3198 transitions. Word has length 11 [2021-11-19 14:29:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3198 transitions. [2021-11-19 14:29:27,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-19 14:29:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3198 transitions. [2021-11-19 14:29:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:29:27,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:27,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:27,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:27,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,862 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-19 14:29:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:27,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219193513] [2021-11-19 14:29:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:27,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:27,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:27,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:27,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:29:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:28,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:28,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:28,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:28,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:28,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219193513] [2021-11-19 14:29:28,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219193513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:28,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:28,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:29:28,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632535407] [2021-11-19 14:29:28,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:28,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:29:28,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:28,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:29:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:28,105 INFO L87 Difference]: Start difference. First operand 2149 states and 3198 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:28,210 INFO L93 Difference]: Finished difference Result 2121 states and 3142 transitions. [2021-11-19 14:29:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 14:29:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:28,224 INFO L225 Difference]: With dead ends: 2121 [2021-11-19 14:29:28,224 INFO L226 Difference]: Without dead ends: 2121 [2021-11-19 14:29:28,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:29:28,227 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:28,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2323 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:29:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-11-19 14:29:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2119. [2021-11-19 14:29:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 1610 states have (on average 1.9229813664596274) internal successors, (3096), 2104 states have internal predecessors, (3096), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3140 transitions. [2021-11-19 14:29:28,311 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3140 transitions. Word has length 13 [2021-11-19 14:29:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:28,311 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 3140 transitions. [2021-11-19 14:29:28,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3140 transitions. [2021-11-19 14:29:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:29:28,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:28,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:28,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 14:29:28,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:28,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-19 14:29:28,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:28,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167872294] [2021-11-19 14:29:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:28,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:28,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:28,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:28,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:29:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:28,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:28,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:28,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:28,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:28,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:28,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167872294] [2021-11-19 14:29:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167872294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:28,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:29:28,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276314403] [2021-11-19 14:29:28,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:28,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:28,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:28,935 INFO L87 Difference]: Start difference. First operand 2119 states and 3140 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 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) [2021-11-19 14:29:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:32,461 INFO L93 Difference]: Finished difference Result 2768 states and 3973 transitions. [2021-11-19 14:29:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:29:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 14:29:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:32,481 INFO L225 Difference]: With dead ends: 2768 [2021-11-19 14:29:32,481 INFO L226 Difference]: Without dead ends: 2768 [2021-11-19 14:29:32,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:32,482 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:32,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 14:29:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2021-11-19 14:29:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2115. [2021-11-19 14:29:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1610 states have (on average 1.9180124223602484) internal successors, (3088), 2100 states have internal predecessors, (3088), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 3132 transitions. [2021-11-19 14:29:32,564 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 3132 transitions. Word has length 27 [2021-11-19 14:29:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:32,564 INFO L470 AbstractCegarLoop]: Abstraction has 2115 states and 3132 transitions. [2021-11-19 14:29:32,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 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) [2021-11-19 14:29:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 3132 transitions. [2021-11-19 14:29:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:29:32,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:32,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:32,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:32,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:32,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-19 14:29:32,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:32,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689716394] [2021-11-19 14:29:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:32,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:32,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:32,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:32,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:29:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:32,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:29:32,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:32,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:33,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:33,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:33,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689716394] [2021-11-19 14:29:33,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689716394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:33,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:33,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:29:33,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925283494] [2021-11-19 14:29:33,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:33,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:29:33,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:29:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:29:33,681 INFO L87 Difference]: Start difference. First operand 2115 states and 3132 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:42,630 INFO L93 Difference]: Finished difference Result 2389 states and 3321 transitions. [2021-11-19 14:29:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:29:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 14:29:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:42,646 INFO L225 Difference]: With dead ends: 2389 [2021-11-19 14:29:42,647 INFO L226 Difference]: Without dead ends: 2389 [2021-11-19 14:29:42,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:29:42,648 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 1487 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:42,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 2315 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-19 14:29:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-19 14:29:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-11-19 14:29:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1610 states have (on average 1.9130434782608696) internal successors, (3080), 2096 states have internal predecessors, (3080), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3124 transitions. [2021-11-19 14:29:42,707 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3124 transitions. Word has length 27 [2021-11-19 14:29:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:42,707 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 3124 transitions. [2021-11-19 14:29:42,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3124 transitions. [2021-11-19 14:29:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 14:29:42,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:42,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:42,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:42,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:42,922 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-19 14:29:42,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:42,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846647470] [2021-11-19 14:29:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:42,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:42,924 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:42,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:29:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:43,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:43,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:43,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:43,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846647470] [2021-11-19 14:29:43,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846647470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:43,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:29:43,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879650076] [2021-11-19 14:29:43,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:43,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:43,369 INFO L87 Difference]: Start difference. First operand 2111 states and 3124 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:43,434 INFO L93 Difference]: Finished difference Result 2099 states and 3104 transitions. [2021-11-19 14:29:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-19 14:29:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:43,447 INFO L225 Difference]: With dead ends: 2099 [2021-11-19 14:29:43,447 INFO L226 Difference]: Without dead ends: 2099 [2021-11-19 14:29:43,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:29:43,448 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:43,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:29:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-11-19 14:29:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2021-11-19 14:29:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1598 states have (on average 1.9148936170212767) internal successors, (3060), 2084 states have internal predecessors, (3060), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3104 transitions. [2021-11-19 14:29:43,500 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3104 transitions. Word has length 42 [2021-11-19 14:29:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:43,501 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 3104 transitions. [2021-11-19 14:29:43,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3104 transitions. [2021-11-19 14:29:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 14:29:43,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:43,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:43,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:43,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:43,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-19 14:29:43,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:43,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451935450] [2021-11-19 14:29:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:43,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:43,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:43,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:43,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:29:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:43,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:29:43,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:44,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:44,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:44,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451935450] [2021-11-19 14:29:44,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451935450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:44,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:44,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:29:44,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751619672] [2021-11-19 14:29:44,835 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:44,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:29:44,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:44,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:29:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:44,837 INFO L87 Difference]: Start difference. First operand 2099 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:44,943 INFO L93 Difference]: Finished difference Result 1915 states and 2749 transitions. [2021-11-19 14:29:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:29:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-19 14:29:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:44,959 INFO L225 Difference]: With dead ends: 1915 [2021-11-19 14:29:44,959 INFO L226 Difference]: Without dead ends: 1915 [2021-11-19 14:29:44,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:44,961 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:44,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:29:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-19 14:29:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2021-11-19 14:29:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1414 states have (on average 1.913012729844413) internal successors, (2705), 1900 states have internal predecessors, (2705), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:29:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2749 transitions. [2021-11-19 14:29:45,012 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2749 transitions. Word has length 50 [2021-11-19 14:29:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:45,012 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2749 transitions. [2021-11-19 14:29:45,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:29:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2749 transitions. [2021-11-19 14:29:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 14:29:45,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:45,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:29:45,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:45,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:45,234 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:29:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-19 14:29:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:45,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949368759] [2021-11-19 14:29:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:45,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:45,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:45,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:29:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:45,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:29:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:45,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:45,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:29:46,304 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:29:46,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-19 14:29:46,313 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:29:46,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:29:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:46,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:29:51,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:51,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949368759] [2021-11-19 14:29:51,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949368759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:51,588 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:51,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:29:51,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632090233] [2021-11-19 14:29:51,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:51,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:29:51,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:51,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:29:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:29:51,593 INFO L87 Difference]: Start difference. First operand 1915 states and 2749 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-19 14:29:59,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:59,935 INFO L93 Difference]: Finished difference Result 2621 states and 3389 transitions. [2021-11-19 14:29:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:29:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-19 14:29:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:59,952 INFO L225 Difference]: With dead ends: 2621 [2021-11-19 14:29:59,952 INFO L226 Difference]: Without dead ends: 2621 [2021-11-19 14:29:59,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 14:29:59,953 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1451 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2033 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:59,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 2447 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1892 Invalid, 0 Unknown, 2033 Unchecked, 8.2s Time] [2021-11-19 14:29:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-19 14:30:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2010. [2021-11-19 14:30:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1541 states have (on average 1.8650227125243348) internal successors, (2874), 1992 states have internal predecessors, (2874), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:30:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2924 transitions. [2021-11-19 14:30:00,032 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2924 transitions. Word has length 53 [2021-11-19 14:30:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:00,032 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 2924 transitions. [2021-11-19 14:30:00,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-19 14:30:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2924 transitions. [2021-11-19 14:30:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:30:00,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:00,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:00,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:00,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:00,252 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-19 14:30:00,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:00,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977474224] [2021-11-19 14:30:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:00,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:00,256 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:00,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:30:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:00,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:30:00,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:00,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:00,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 14:30:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:01,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:01,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977474224] [2021-11-19 14:30:01,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977474224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:01,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:01,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:30:01,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562951451] [2021-11-19 14:30:01,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:01,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:30:01,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:30:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:30:01,195 INFO L87 Difference]: Start difference. First operand 2010 states and 2924 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-19 14:30:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:03,627 INFO L93 Difference]: Finished difference Result 2008 states and 2920 transitions. [2021-11-19 14:30:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:30:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 55 [2021-11-19 14:30:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:03,638 INFO L225 Difference]: With dead ends: 2008 [2021-11-19 14:30:03,639 INFO L226 Difference]: Without dead ends: 2008 [2021-11-19 14:30:03,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:30:03,640 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:03,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 650 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:30:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-19 14:30:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-11-19 14:30:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1541 states have (on average 1.8624269954574952) internal successors, (2870), 1990 states have internal predecessors, (2870), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:30:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2920 transitions. [2021-11-19 14:30:03,691 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2920 transitions. Word has length 55 [2021-11-19 14:30:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:03,692 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2920 transitions. [2021-11-19 14:30:03,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-19 14:30:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2920 transitions. [2021-11-19 14:30:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:30:03,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:03,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:03,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:03,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:03,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-19 14:30:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:03,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178819292] [2021-11-19 14:30:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:03,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:03,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:03,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:30:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:04,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:30:04,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:04,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:30:04,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 14:30:04,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 14:30:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:04,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:04,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:04,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178819292] [2021-11-19 14:30:04,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178819292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:04,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:04,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:30:04,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825903766] [2021-11-19 14:30:04,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:04,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:30:04,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:30:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:30:04,451 INFO L87 Difference]: Start difference. First operand 2008 states and 2920 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:30:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:08,262 INFO L93 Difference]: Finished difference Result 2007 states and 2918 transitions. [2021-11-19 14:30:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:30:08,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-19 14:30:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:08,273 INFO L225 Difference]: With dead ends: 2007 [2021-11-19 14:30:08,274 INFO L226 Difference]: Without dead ends: 2007 [2021-11-19 14:30:08,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:30:08,275 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2799 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:30:08,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-11-19 14:30:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2007. [2021-11-19 14:30:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1541 states have (on average 1.8611291369240752) internal successors, (2868), 1989 states have internal predecessors, (2868), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:30:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2918 transitions. [2021-11-19 14:30:08,324 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2918 transitions. Word has length 58 [2021-11-19 14:30:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:08,324 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2918 transitions. [2021-11-19 14:30:08,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:30:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2918 transitions. [2021-11-19 14:30:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:30:08,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:08,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:08,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:08,553 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-19 14:30:08,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:08,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879453075] [2021-11-19 14:30:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:08,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:08,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:08,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:30:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:08,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:30:08,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:08,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:30:08,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:30:09,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 14:30:09,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 14:30:09,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 14:30:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:09,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:09,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:09,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879453075] [2021-11-19 14:30:09,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879453075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:09,487 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:09,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:30:09,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566907742] [2021-11-19 14:30:09,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:30:09,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:30:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:30:09,489 INFO L87 Difference]: Start difference. First operand 2007 states and 2918 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-11-19 14:30:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:21,439 INFO L93 Difference]: Finished difference Result 2006 states and 2916 transitions. [2021-11-19 14:30:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:30:21,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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 58 [2021-11-19 14:30:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:21,451 INFO L225 Difference]: With dead ends: 2006 [2021-11-19 14:30:21,451 INFO L226 Difference]: Without dead ends: 2006 [2021-11-19 14:30:21,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:30:21,452 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:21,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3269 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2021-11-19 14:30:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-11-19 14:30:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2006. [2021-11-19 14:30:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1539 states have (on average 1.8622482131254061) internal successors, (2866), 1988 states have internal predecessors, (2866), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:30:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2916 transitions. [2021-11-19 14:30:21,496 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2916 transitions. Word has length 58 [2021-11-19 14:30:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:21,496 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 2916 transitions. [2021-11-19 14:30:21,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-11-19 14:30:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2916 transitions. [2021-11-19 14:30:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 14:30:21,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:21,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:21,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:21,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:21,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-19 14:30:21,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:21,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772308970] [2021-11-19 14:30:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:21,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:21,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:21,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:30:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:21,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:30:21,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:22,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:22,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:22,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772308970] [2021-11-19 14:30:22,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772308970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:22,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:22,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:30:22,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528687761] [2021-11-19 14:30:22,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:22,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:30:22,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:30:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:30:22,268 INFO L87 Difference]: Start difference. First operand 2006 states and 2916 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:30:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:22,487 INFO L93 Difference]: Finished difference Result 2016 states and 2933 transitions. [2021-11-19 14:30:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:30:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-11-19 14:30:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:22,501 INFO L225 Difference]: With dead ends: 2016 [2021-11-19 14:30:22,502 INFO L226 Difference]: Without dead ends: 2016 [2021-11-19 14:30:22,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:30:22,503 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 9 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:22,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:30:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-19 14:30:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2021-11-19 14:30:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1547 states have (on average 1.8603749191984487) internal successors, (2878), 1997 states have internal predecessors, (2878), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:30:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2933 transitions. [2021-11-19 14:30:22,550 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2933 transitions. Word has length 66 [2021-11-19 14:30:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:22,551 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2933 transitions. [2021-11-19 14:30:22,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:30:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2933 transitions. [2021-11-19 14:30:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:30:22,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:22,552 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:22,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:22,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:22,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash -722171842, now seen corresponding path program 1 times [2021-11-19 14:30:22,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:22,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137437195] [2021-11-19 14:30:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:22,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:22,770 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:22,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:30:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:23,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:30:23,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:23,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:23,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:23,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137437195] [2021-11-19 14:30:23,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137437195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:30:23,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [285266264] [2021-11-19 14:30:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:23,446 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:30:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:30:23,453 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:30:23,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 14:30:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:23,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:30:23,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:24,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:24,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [285266264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:30:24,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171452801] [2021-11-19 14:30:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:24,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:30:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:30:24,238 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:30:24,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 14:30:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:30:24,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:24,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:24,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171452801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:30:24,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:30:24,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:30:24,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862244552] [2021-11-19 14:30:24,936 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:30:24,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:30:24,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:30:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:30:24,938 INFO L87 Difference]: Start difference. First operand 2016 states and 2933 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:30:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:30:25,492 INFO L93 Difference]: Finished difference Result 2030 states and 2954 transitions. [2021-11-19 14:30:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:30:25,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2021-11-19 14:30:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:30:25,501 INFO L225 Difference]: With dead ends: 2030 [2021-11-19 14:30:25,502 INFO L226 Difference]: Without dead ends: 2024 [2021-11-19 14:30:25,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:30:25,503 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 25 mSDsluCounter, 6521 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:30:25,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 7615 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:30:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-19 14:30:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2022. [2021-11-19 14:30:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1553 states have (on average 1.857694784288474) internal successors, (2885), 2003 states have internal predecessors, (2885), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:30:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2940 transitions. [2021-11-19 14:30:25,539 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2940 transitions. Word has length 68 [2021-11-19 14:30:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:25,539 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 2940 transitions. [2021-11-19 14:30:25,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:30:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2940 transitions. [2021-11-19 14:30:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 14:30:25,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:25,541 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:30:25,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:25,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:25,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:26,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:30:26,168 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 14:30:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 337093118, now seen corresponding path program 2 times [2021-11-19 14:30:26,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:26,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534453263] [2021-11-19 14:30:26,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:30:26,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:26,172 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:26,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:30:26,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:30:26,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:30:26,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:30:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:27,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:27,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:27,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534453263] [2021-11-19 14:30:27,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534453263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:30:27,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [552220929] [2021-11-19 14:30:27,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:30:27,775 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:30:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:30:27,777 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:30:27,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:30:28,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:30:28,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:30:28,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:30:28,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:28,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:30:29,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [552220929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:30:29,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289022780] [2021-11-19 14:30:29,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:30:29,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:30:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:30:29,311 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:30:29,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e6e7ae-d091-42fa-80e5-f1d710f56fe1/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 14:30:47,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:30:47,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:30:47,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:30:47,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:47,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 14:30:48,121 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:30:48,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-19 14:30:48,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:32:49,925 WARN L227 SmtUtils]: Spent 40.18s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:32:49,926 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:32:49,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-19 14:32:50,681 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:32:50,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-19 14:32:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:32:50,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:32:52,833 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:32:52,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-19 14:42:55,404 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:42:55,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 113 [2021-11-19 14:42:59,044 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_112| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr275| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr275_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr275_108| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_106|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr275_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr275|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr275_120|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr275_118|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr275_116|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr275_114|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr275_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) is different from false