./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba73e837a826280752a20b2d8e2914a215d6f6c6 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba73e837a826280752a20b2d8e2914a215d6f6c6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:49:36,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:36,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:36,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:36,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:36,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:36,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:36,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:36,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:36,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:36,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:36,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:36,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:36,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:36,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:36,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:36,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:36,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:36,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:36,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:36,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:36,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:36,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:36,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:36,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:36,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:36,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:36,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:36,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:36,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:36,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:36,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:36,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:36,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:36,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:36,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:36,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:36,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:36,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:36,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:36,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:36,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:49:36,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:36,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:36,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:36,425 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:36,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:36,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:36,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:49:36,426 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:36,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:36,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:49:36,428 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:49:36,428 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:36,429 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:49:36,429 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:49:36,429 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:49:36,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:36,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:49:36,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:49:36,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:49:36,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:36,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:36,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:36,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:36,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:49:36,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:49:36,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:36,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:36,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:36,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:36,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:36,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:36,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:36,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:36,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:36,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:49:36,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:49:36,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:36,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:36,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:36,440 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_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba73e837a826280752a20b2d8e2914a215d6f6c6 [2021-10-16 02:49:36,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:36,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:36,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:36,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:36,811 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:36,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-16 02:49:36,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/a3dc73844/79af2210279b485c970cfe7bbd75ac71/FLAG1371bf69b [2021-10-16 02:49:37,480 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:37,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-16 02:49:37,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/a3dc73844/79af2210279b485c970cfe7bbd75ac71/FLAG1371bf69b [2021-10-16 02:49:37,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/a3dc73844/79af2210279b485c970cfe7bbd75ac71 [2021-10-16 02:49:37,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:37,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:37,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:37,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:37,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:37,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:37" (1/1) ... [2021-10-16 02:49:37,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb91812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:37, skipping insertion in model container [2021-10-16 02:49:37,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:37" (1/1) ... [2021-10-16 02:49:37,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:37,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:38,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-16 02:49:38,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:38,184 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) [2021-10-16 02:49:38,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14fed954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38, skipping insertion in model container [2021-10-16 02:49:38,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:38,197 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:49:38,199 INFO L168 Benchmark]: Toolchain (without parser) took 338.08 ms. Allocated memory is still 94.4 MB. Free memory was 62.7 MB in the beginning and 70.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:38,203 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:38,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.84 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 70.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:38,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.84 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 70.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 110]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:49:41,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:41,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:41,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:41,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:41,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:41,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:41,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:41,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:41,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:41,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:41,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:41,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:41,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:41,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:41,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:41,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:41,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:41,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:41,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:41,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:41,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:41,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:41,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:41,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:41,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:41,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:41,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:41,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:41,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:41,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:41,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:41,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:41,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:41,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:41,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:41,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:41,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:41,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:41,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:41,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:41,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:49:41,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:41,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:41,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:41,259 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:41,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:41,260 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:41,260 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:41,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:41,261 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:41,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:41,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:49:41,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:49:41,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:41,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:41,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:41,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:41,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:49:41,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:49:41,265 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:49:41,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:49:41,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:41,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:41,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:41,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:41,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:49:41,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:41,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:41,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:41,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:41,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:41,268 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:49:41,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:49:41,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:41,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:41,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:41,270 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_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba73e837a826280752a20b2d8e2914a215d6f6c6 [2021-10-16 02:49:41,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:41,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:41,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:41,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:41,775 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:41,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-16 02:49:41,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/27f4122cb/966d01916d8347d29f75b942aeb1107e/FLAG061f3630a [2021-10-16 02:49:42,485 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:42,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2021-10-16 02:49:42,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/27f4122cb/966d01916d8347d29f75b942aeb1107e/FLAG061f3630a [2021-10-16 02:49:42,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/data/27f4122cb/966d01916d8347d29f75b942aeb1107e [2021-10-16 02:49:42,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:42,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:42,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:42,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:42,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:42,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:42" (1/1) ... [2021-10-16 02:49:42,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669e3b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:42, skipping insertion in model container [2021-10-16 02:49:42,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:42" (1/1) ... [2021-10-16 02:49:42,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:42,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:43,233 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-16 02:49:43,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:43,341 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:49:43,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:43,403 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-16 02:49:43,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:43,423 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:49:43,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2820,2833] [2021-10-16 02:49:43,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:43,515 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:49:43,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43 WrapperNode [2021-10-16 02:49:43,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:43,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:43,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:49:43,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:49:43,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:43,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:49:43,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:49:43,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:49:43,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:49:43,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:49:43,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:49:43,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:49:43,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (1/1) ... [2021-10-16 02:49:43,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:43,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:49:43,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:49:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:49:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:49:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:49:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 02:49:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 02:49:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 02:49:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 02:49:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 02:49:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 02:49:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:49:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:49:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:49:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:49:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:49:43,778 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 02:49:44,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:49:44,580 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 02:49:44,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:44 BoogieIcfgContainer [2021-10-16 02:49:44,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:49:44,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:49:44,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:49:44,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:49:44,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:49:42" (1/3) ... [2021-10-16 02:49:44,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456fccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:44, skipping insertion in model container [2021-10-16 02:49:44,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:43" (2/3) ... [2021-10-16 02:49:44,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456fccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:44, skipping insertion in model container [2021-10-16 02:49:44,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:44" (3/3) ... [2021-10-16 02:49:44,596 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2021-10-16 02:49:44,605 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:49:44,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:49:44,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:49:44,606 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:49:44,670 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,671 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,671 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,672 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,672 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,673 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,674 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,705 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,708 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,709 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,721 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:49:44,755 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-16 02:49:44,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:49:44,843 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:49:44,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:49:44,878 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:49:44,889 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 183 transitions, 390 flow [2021-10-16 02:49:44,894 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 183 transitions, 390 flow [2021-10-16 02:49:44,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 390 flow [2021-10-16 02:49:45,049 INFO L129 PetriNetUnfolder]: 15/180 cut-off events. [2021-10-16 02:49:45,049 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-16 02:49:45,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 180 events. 15/180 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2021-10-16 02:49:45,066 INFO L116 LiptonReduction]: Number of co-enabled transitions 2174 [2021-10-16 02:50:08,566 INFO L131 LiptonReduction]: Checked pairs total: 5029 [2021-10-16 02:50:08,567 INFO L133 LiptonReduction]: Total number of compositions: 175 [2021-10-16 02:50:08,577 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 100 flow [2021-10-16 02:50:08,623 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:50:08,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:08,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:08,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash -489514769, now seen corresponding path program 1 times [2021-10-16 02:50:08,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:08,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103105673] [2021-10-16 02:50:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:08,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:08,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:08,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:50:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:08,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:50:08,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:09,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:09,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:09,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103105673] [2021-10-16 02:50:09,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103105673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:09,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:09,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:50:09,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281821999] [2021-10-16 02:50:09,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:50:09,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:50:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:50:09,560 INFO L87 Difference]: Start difference. First operand has 441 states, 440 states have (on average 3.131818181818182) internal successors, (1378), 440 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:09,701 INFO L93 Difference]: Finished difference Result 534 states and 1629 transitions. [2021-10-16 02:50:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:50:09,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-16 02:50:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:09,725 INFO L225 Difference]: With dead ends: 534 [2021-10-16 02:50:09,726 INFO L226 Difference]: Without dead ends: 387 [2021-10-16 02:50:09,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:50:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-10-16 02:50:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-10-16 02:50:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.0725388601036268) internal successors, (1186), 386 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1186 transitions. [2021-10-16 02:50:09,857 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1186 transitions. Word has length 23 [2021-10-16 02:50:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:09,859 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1186 transitions. [2021-10-16 02:50:09,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1186 transitions. [2021-10-16 02:50:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:50:09,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:09,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:09,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:10,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:10,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1436374237, now seen corresponding path program 2 times [2021-10-16 02:50:10,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:10,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460280261] [2021-10-16 02:50:10,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:50:10,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:10,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:10,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:50:10,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:50:10,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:50:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:50:10,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:10,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:10,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:10,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460280261] [2021-10-16 02:50:10,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460280261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:10,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:10,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:50:10,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162577502] [2021-10-16 02:50:10,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:50:10,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:50:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:50:10,782 INFO L87 Difference]: Start difference. First operand 387 states and 1186 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:10,995 INFO L93 Difference]: Finished difference Result 563 states and 1762 transitions. [2021-10-16 02:50:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:50:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-16 02:50:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:11,006 INFO L225 Difference]: With dead ends: 563 [2021-10-16 02:50:11,007 INFO L226 Difference]: Without dead ends: 563 [2021-10-16 02:50:11,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:50:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-16 02:50:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 431. [2021-10-16 02:50:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.1697674418604653) internal successors, (1363), 430 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1363 transitions. [2021-10-16 02:50:11,090 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1363 transitions. Word has length 23 [2021-10-16 02:50:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:11,090 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1363 transitions. [2021-10-16 02:50:11,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1363 transitions. [2021-10-16 02:50:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:50:11,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:11,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:11,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:11,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:11,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1864381997, now seen corresponding path program 1 times [2021-10-16 02:50:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:11,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111475829] [2021-10-16 02:50:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:11,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:11,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:11,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:11,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:50:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:50:11,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:11,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:12,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:12,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111475829] [2021-10-16 02:50:12,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111475829] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:50:12,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1444399231] [2021-10-16 02:50:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:12,403 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:50:12,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:50:12,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:50:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:12,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:50:12,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:12,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:13,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1444399231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:13,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:50:13,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 13 [2021-10-16 02:50:13,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090250948] [2021-10-16 02:50:13,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:50:13,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:50:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:50:13,048 INFO L87 Difference]: Start difference. First operand 431 states and 1363 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:13,203 INFO L93 Difference]: Finished difference Result 537 states and 1608 transitions. [2021-10-16 02:50:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:50:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:50:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:13,209 INFO L225 Difference]: With dead ends: 537 [2021-10-16 02:50:13,210 INFO L226 Difference]: Without dead ends: 432 [2021-10-16 02:50:13,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 281.4ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:50:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-16 02:50:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-10-16 02:50:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.1647331786542923) internal successors, (1364), 431 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1364 transitions. [2021-10-16 02:50:13,235 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1364 transitions. Word has length 26 [2021-10-16 02:50:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:13,236 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1364 transitions. [2021-10-16 02:50:13,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1364 transitions. [2021-10-16 02:50:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:50:13,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:13,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:13,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:13,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:13,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:13,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:13,655 INFO L82 PathProgramCache]: Analyzing trace with hash -150463482, now seen corresponding path program 1 times [2021-10-16 02:50:13,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:13,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538991744] [2021-10-16 02:50:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:13,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:13,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:13,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:50:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:13,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:50:13,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:14,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:14,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:14,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538991744] [2021-10-16 02:50:14,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538991744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:50:14,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [137375581] [2021-10-16 02:50:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:14,781 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:50:14,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:50:14,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:50:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:15,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:50:15,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:15,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:15,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [137375581] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:50:15,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091782029] [2021-10-16 02:50:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:15,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:15,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:15,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:50:15,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:50:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:16,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:50:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:16,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:50:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091782029] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:50:16,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-16 02:50:16,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 4, 4, 4] total 17 [2021-10-16 02:50:16,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791069740] [2021-10-16 02:50:16,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:50:16,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:50:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:50:16,796 INFO L87 Difference]: Start difference. First operand 432 states and 1364 transitions. Second operand has 4 states, 4 states have (on average 6.75) 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) [2021-10-16 02:50:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:16,929 INFO L93 Difference]: Finished difference Result 580 states and 1826 transitions. [2021-10-16 02:50:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:50:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) 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 [2021-10-16 02:50:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:16,937 INFO L225 Difference]: With dead ends: 580 [2021-10-16 02:50:16,937 INFO L226 Difference]: Without dead ends: 580 [2021-10-16 02:50:16,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 393.7ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:50:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-16 02:50:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 490. [2021-10-16 02:50:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.3333333333333335) internal successors, (1630), 489 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1630 transitions. [2021-10-16 02:50:16,963 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1630 transitions. Word has length 27 [2021-10-16 02:50:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:16,964 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1630 transitions. [2021-10-16 02:50:16,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) 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) [2021-10-16 02:50:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1630 transitions. [2021-10-16 02:50:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:50:16,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:16,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:17,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:17,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:17,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-16 02:50:17,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:17,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:17,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1093750078, now seen corresponding path program 2 times [2021-10-16 02:50:17,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:17,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757402076] [2021-10-16 02:50:17,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:50:17,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:17,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:17,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:50:17,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:50:17,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:50:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:50:17,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:50:18,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:50:18,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:18,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757402076] [2021-10-16 02:50:18,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757402076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:18,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:50:18,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235590409] [2021-10-16 02:50:18,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:50:18,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:50:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:50:18,377 INFO L87 Difference]: Start difference. First operand 490 states and 1630 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:18,519 INFO L93 Difference]: Finished difference Result 664 states and 2158 transitions. [2021-10-16 02:50:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:50:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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 [2021-10-16 02:50:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:18,528 INFO L225 Difference]: With dead ends: 664 [2021-10-16 02:50:18,528 INFO L226 Difference]: Without dead ends: 664 [2021-10-16 02:50:18,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:50:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-16 02:50:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 490. [2021-10-16 02:50:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.2842535787321063) internal successors, (1606), 489 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1606 transitions. [2021-10-16 02:50:18,557 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1606 transitions. Word has length 27 [2021-10-16 02:50:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:18,558 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1606 transitions. [2021-10-16 02:50:18,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1606 transitions. [2021-10-16 02:50:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:50:18,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:18,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:18,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-16 02:50:18,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:18,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1005833107, now seen corresponding path program 1 times [2021-10-16 02:50:18,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:18,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062054008] [2021-10-16 02:50:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:18,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:18,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:18,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:50:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:19,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:50:19,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:50:19,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:19,823 INFO L354 Elim1Store]: treesize reduction 395, result has 1.3 percent of original size [2021-10-16 02:50:19,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 73 treesize of output 22 [2021-10-16 02:50:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:50:19,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:19,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062054008] [2021-10-16 02:50:19,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062054008] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:19,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:19,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:50:19,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424020198] [2021-10-16 02:50:19,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:50:19,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:50:19,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:50:19,881 INFO L87 Difference]: Start difference. First operand 490 states and 1606 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:20,931 INFO L93 Difference]: Finished difference Result 1082 states and 3473 transitions. [2021-10-16 02:50:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:50:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:50:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:20,943 INFO L225 Difference]: With dead ends: 1082 [2021-10-16 02:50:20,943 INFO L226 Difference]: Without dead ends: 1082 [2021-10-16 02:50:20,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 362.4ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:50:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-16 02:50:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 637. [2021-10-16 02:50:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 3.2547169811320753) internal successors, (2070), 636 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 2070 transitions. [2021-10-16 02:50:20,988 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 2070 transitions. Word has length 30 [2021-10-16 02:50:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:20,988 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 2070 transitions. [2021-10-16 02:50:20,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 2070 transitions. [2021-10-16 02:50:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:50:20,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:20,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:21,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:21,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:21,206 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:50:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:21,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1420482579, now seen corresponding path program 2 times [2021-10-16 02:50:21,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:21,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272105219] [2021-10-16 02:50:21,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:50:21,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:21,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:21,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:50:21,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:50:21,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:50:21,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:50:21,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:21,706 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 56 treesize of output 54 [2021-10-16 02:50:21,881 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-16 02:50:21,881 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 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-16 02:53:14,710 WARN L207 SmtUtils]: Spent 2.74 m on a formula simplification. DAG size of input: 371 DAG size of output: 123 [2021-10-16 02:53:14,712 INFO L354 Elim1Store]: treesize reduction 1732, result has 19.5 percent of original size [2021-10-16 02:53:14,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 108 treesize of output 463 [2021-10-16 02:57:57,158 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:57:57,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:57,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272105219] [2021-10-16 02:57:57,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 02:57:57,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [703745449] [2021-10-16 02:57:57,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:57:57,160 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:57,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:57,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 02:57:57,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:57,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:57:58,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:57:58,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:58,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:57:58,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:58,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:57:58,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722894372] [2021-10-16 02:57:58,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:57:58,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:58,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:58,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:58,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:57:58,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:57:58,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:58,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:57:58,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:58,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:57:58,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:58,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:57:58,685 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:57:58,685 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:57:58,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:57:58,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:57:58,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:57:58,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 02:57:58,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:58,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:59,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-16 02:57:59,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b33e741-5555-41db-af68-157911ccca54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:59,316 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:57:59,316 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:57:59,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:57:59 BasicIcfg [2021-10-16 02:57:59,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:57:59,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:57:59,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:57:59,343 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:57:59,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:44" (3/4) ... [2021-10-16 02:57:59,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:57:59,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:57:59,360 INFO L168 Benchmark]: Toolchain (without parser) took 496494.50 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 41.0 MB in the beginning and 61.9 MB in the end (delta: -20.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,361 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 75.5 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:57:59,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.31 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 55.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.97 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 54.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,362 INFO L168 Benchmark]: Boogie Preprocessor took 75.63 ms. Allocated memory is still 75.5 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,362 INFO L168 Benchmark]: RCFGBuilder took 902.22 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 35.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,362 INFO L168 Benchmark]: TraceAbstraction took 494753.21 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.5 MB in the beginning and 61.9 MB in the end (delta: -26.4 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:59,363 INFO L168 Benchmark]: Witness Printer took 4.76 ms. Allocated memory is still 96.5 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:57:59,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 75.5 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 660.31 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 55.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.97 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 54.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.63 ms. Allocated memory is still 75.5 MB. Free memory was 54.0 MB in the beginning and 52.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 902.22 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 35.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 494753.21 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.5 MB in the beginning and 61.9 MB in the end (delta: -26.4 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.76 ms. Allocated memory is still 96.5 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23673.0ms, 178 PlacesBefore, 43 PlacesAfterwards, 183 TransitionsBefore, 38 TransitionsAfterwards, 2174 CoEnabledTransitionPairs, 7 FixpointIterations, 105 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 175 TotalNumberOfCompositions, 5029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3239, positive: 3064, positive conditional: 0, positive unconditional: 3064, negative: 175, negative conditional: 0, negative unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1547, positive: 1493, positive conditional: 0, positive unconditional: 1493, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1547, positive: 1493, positive conditional: 0, positive unconditional: 1493, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1369, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1369, negative conditional: 0, negative unconditional: 1369, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3239, positive: 1571, positive conditional: 0, positive unconditional: 1571, negative: 121, negative conditional: 0, negative unconditional: 121, unknown: 1547, unknown conditional: 0, unknown unconditional: 1547] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 101]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int* A; [L42] 0 int min, max, i, j, N; [L43] 0 _Bool v_assert, b1, b2; [L76] 0 pthread_t t1, t2, t3; [L79] 0 min = __VERIFIER_nondet_int() [L80] 0 max = __VERIFIER_nondet_int() [L81] 0 i = __VERIFIER_nondet_int() [L82] 0 j = __VERIFIER_nondet_int() [L83] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L85] 0 b1 = __VERIFIER_nondet_bool() [L86] 0 b2 = __VERIFIER_nondet_bool() [L87] 0 v_assert = __VERIFIER_nondet_bool() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L110] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L111] 0 int i = 0; [L111] COND TRUE 0 i < size [L112] 0 arr[i] = __VERIFIER_nondet_int() [L111] 0 i++ [L111] COND FALSE 0 !(i < size) [L114] 0 return arr; [L88] 0 A = create_fresh_int_array(N) [L91] 0 ( i == j && i == 0 ) && ( min == max && min == A[0] ) [L38] COND TRUE 0 !cond [L93] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] EXPR 1 A[0] [L94] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L48] 1 min = A[0] [L49] 1 b1 = 1 [L95] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L50] COND TRUE 1 ( ( 0 <= i ) && ( i < N ) ) [L51] EXPR 1 A[i] [L51] EXPR 1 ( min < A[i] ) ? min : A[i] [L51] 1 min = ( min < A[i] ) ? min : A[i] [L52] 1 i = ( i + 1 ) [L50] COND FALSE 1 !(( ( 0 <= i ) && ( i < N ) )) [L55] 1 return 0; [L59] EXPR 2 A[0] [L59] 2 max = A[0] [L60] 2 b2 = 1 [L70] 3 v_assert = ( !b1 || !b2 || ( min <= max ) ) [L72] 3 return 0; [L61] COND TRUE 2 ( ( 0 <= j ) && ( j < N ) ) [L62] EXPR 2 A[j] [L62] EXPR 2 ( max > A[j] ) ? max : A[j] [L62] 2 max = ( max > A[j] ) ? max : A[j] [L63] 2 j = ( j + 1 ) [L61] COND FALSE 2 !(( ( 0 <= j ) && ( j < N ) )) [L66] 2 return 0; [L96] 0 \read(t1) [L96] FCALL, JOIN 1 pthread_join(t1, 0) [L97] 0 \read(t2) [L97] FCALL, JOIN 2 pthread_join(t2, 0) [L98] 0 \read(t3) [L98] FCALL, JOIN 3 pthread_join(t3, 0) [L38] COND FALSE 0 !(!cond) [L101] 0 reach_error() - UnprovableResult [Line: 94]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 95]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 494488.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 55.6ms, AutomataDifference: 1954.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23779.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 215 SDtfs, 503 SDslu, 379 SDs, 0 SdLazy, 283 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1222.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 406 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1201.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=637occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 318.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 841 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 204.2ms SsaConstructionTime, 771.8ms SatisfiabilityAnalysisTime, 5702.0ms InterpolantComputationTime, 236 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 2837 SizeOfPredicates, 80 NumberOfNonLiveVariables, 952 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 19/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...