./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8 --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 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:14:41,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:14:41,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:14:41,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:14:41,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:14:41,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:14:41,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:14:41,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:14:41,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:14:41,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:14:41,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:14:41,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:14:41,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:14:41,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:14:41,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:14:41,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:14:41,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:14:41,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:14:41,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:14:41,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:14:41,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:14:41,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:14:41,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:14:41,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:14:41,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:14:41,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:14:41,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:14:41,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:14:41,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:14:41,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:14:41,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:14:41,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:14:41,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:14:41,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:14:41,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:14:41,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:14:41,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:14:41,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:14:41,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:14:41,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:14:41,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:14:41,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:14:41,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:14:41,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:14:41,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:14:41,392 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:14:41,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:14:41,392 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:14:41,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:14:41,393 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:14:41,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:14:41,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:14:41,393 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:14:41,394 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:14:41,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:14:41,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:14:41,395 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:14:41,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:14:41,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:14:41,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:14:41,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:14:41,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:14:41,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:14:41,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:14:41,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:14:41,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:41,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:14:41,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:14:41,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:14:41,401 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:14:41,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:14:41,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:14:41,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:14:41,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:14:41,402 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f [2021-11-07 01:14:41,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:14:41,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:14:41,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:14:41,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:14:41,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:14:41,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-11-07 01:14:41,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/7a45524fa/5f24d499cdbf4ae89d97945466d32af2/FLAG9012b7998 [2021-11-07 01:14:42,581 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:14:42,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-11-07 01:14:42,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/7a45524fa/5f24d499cdbf4ae89d97945466d32af2/FLAG9012b7998 [2021-11-07 01:14:42,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/7a45524fa/5f24d499cdbf4ae89d97945466d32af2 [2021-11-07 01:14:42,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:14:42,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:14:42,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:42,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:14:42,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:14:42,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:42" (1/1) ... [2021-11-07 01:14:42,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d28f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:42, skipping insertion in model container [2021-11-07 01:14:42,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:42" (1/1) ... [2021-11-07 01:14:42,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:14:42,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:43,264 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-11-07 01:14:43,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:43,608 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:14:43,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9a6841f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:43, skipping insertion in model container [2021-11-07 01:14:43,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:43,610 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:14:43,613 INFO L168 Benchmark]: Toolchain (without parser) took 819.62 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 55.3 MB in the beginning and 98.7 MB in the end (delta: -43.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:14:43,615 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:14:43,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.10 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 55.1 MB in the beginning and 98.7 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:14:43,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 816.10 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 55.1 MB in the beginning and 98.7 MB in the end (delta: -43.6 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: 582]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8 --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 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:14:45,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:14:45,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:14:46,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:14:46,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:14:46,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:14:46,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:14:46,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:14:46,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:14:46,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:14:46,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:14:46,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:14:46,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:14:46,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:14:46,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:14:46,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:14:46,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:14:46,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:14:46,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:14:46,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:14:46,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:14:46,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:14:46,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:14:46,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:14:46,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:14:46,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:14:46,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:14:46,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:14:46,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:14:46,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:14:46,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:14:46,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:14:46,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:14:46,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:14:46,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:14:46,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:14:46,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:14:46,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:14:46,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:14:46,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:14:46,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:14:46,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:14:46,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:14:46,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:14:46,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:14:46,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:14:46,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:14:46,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:14:46,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:14:46,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:14:46,172 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:14:46,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:14:46,175 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:14:46,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:14:46,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:14:46,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:14:46,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:14:46,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:14:46,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:14:46,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:14:46,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:14:46,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:14:46,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:14:46,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:14:46,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:14:46,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:14:46,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:14:46,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:14:46,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:46,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:14:46,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:14:46,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:14:46,179 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:14:46,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:46,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:14:46,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:14:46,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:14:46,181 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f [2021-11-07 01:14:46,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:14:46,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:14:46,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:14:46,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:14:46,610 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:14:46,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-11-07 01:14:46,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/f409f110d/39e8989ea3664e27bd3bd9dfbb940183/FLAG35a72f8a7 [2021-11-07 01:14:47,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:14:47,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-11-07 01:14:47,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/f409f110d/39e8989ea3664e27bd3bd9dfbb940183/FLAG35a72f8a7 [2021-11-07 01:14:47,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/data/f409f110d/39e8989ea3664e27bd3bd9dfbb940183 [2021-11-07 01:14:47,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:14:47,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:14:47,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:47,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:14:47,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:14:47,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc85cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:47, skipping insertion in model container [2021-11-07 01:14:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:47" (1/1) ... [2021-11-07 01:14:47,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:14:47,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:48,218 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-11-07 01:14:48,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:48,593 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:14:48,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:14:48,635 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-11-07 01:14:48,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:48,789 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:14:48,824 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_a47ee0f9-758a-4b76-8f43-100bfde77ce9/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-11-07 01:14:48,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:14:48,964 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:14:48,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48 WrapperNode [2021-11-07 01:14:48,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:14:48,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:48,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:14:48,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:14:48,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:49,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:49,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:14:49,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:14:49,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:14:49,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:14:49,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:49,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:49,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:49,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:50,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:50,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:50,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:50,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:14:50,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:14:50,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:14:50,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:14:50,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (1/1) ... [2021-11-07 01:14:50,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:14:50,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:50,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:14:50,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:14:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:14:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:14:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:14:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:12,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:12,398 INFO L299 CfgBuilder]: Removed 1963 assume(true) statements. [2021-11-07 01:15:12,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:12 BoogieIcfgContainer [2021-11-07 01:15:12,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:12,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:12,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:12,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:12,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:47" (1/3) ... [2021-11-07 01:15:12,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdcbe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:12, skipping insertion in model container [2021-11-07 01:15:12,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:48" (2/3) ... [2021-11-07 01:15:12,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdcbe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:12, skipping insertion in model container [2021-11-07 01:15:12,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:12" (3/3) ... [2021-11-07 01:15:12,418 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2021-11-07 01:15:12,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:12,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:15:12,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:12,517 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, mAutomataTypeConcurrency=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 [2021-11-07 01:15:12,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:15:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 8587 states, 8581 states have (on average 1.888358000233073) internal successors, (16204), 8586 states have internal predecessors, (16204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:15:12,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:12,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:12,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1825340265, now seen corresponding path program 1 times [2021-11-07 01:15:12,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:12,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325716987] [2021-11-07 01:15:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:12,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:12,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:15:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:13,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:15:13,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:13,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:13,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:13,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325716987] [2021-11-07 01:15:13,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325716987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:13,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:13,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:13,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493852890] [2021-11-07 01:15:13,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:13,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:13,553 INFO L87 Difference]: Start difference. First operand has 8587 states, 8581 states have (on average 1.888358000233073) internal successors, (16204), 8586 states have internal predecessors, (16204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:14,584 INFO L93 Difference]: Finished difference Result 24098 states and 45471 transitions. [2021-11-07 01:15:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 44 [2021-11-07 01:15:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:14,734 INFO L225 Difference]: With dead ends: 24098 [2021-11-07 01:15:14,735 INFO L226 Difference]: Without dead ends: 15511 [2021-11-07 01:15:14,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15511 states. [2021-11-07 01:15:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15511 to 8583. [2021-11-07 01:15:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8583 states, 8578 states have (on average 1.8866868733970623) internal successors, (16184), 8582 states have internal predecessors, (16184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 16184 transitions. [2021-11-07 01:15:15,217 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 16184 transitions. Word has length 44 [2021-11-07 01:15:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:15,218 INFO L470 AbstractCegarLoop]: Abstraction has 8583 states and 16184 transitions. [2021-11-07 01:15:15,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 16184 transitions. [2021-11-07 01:15:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:15:15,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:15,223 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:15,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:15,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:15,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:15,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1245466461, now seen corresponding path program 1 times [2021-11-07 01:15:15,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:15,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127039193] [2021-11-07 01:15:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:15,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:15,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:15,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:15,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:15:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:15,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:15:15,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:16,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:16,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:16,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127039193] [2021-11-07 01:15:16,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127039193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:16,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:16,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:15:16,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959334557] [2021-11-07 01:15:16,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:16,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:16,154 INFO L87 Difference]: Start difference. First operand 8583 states and 16184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:18,344 INFO L93 Difference]: Finished difference Result 34297 states and 64661 transitions. [2021-11-07 01:15:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:15:18,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:15:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:18,644 INFO L225 Difference]: With dead ends: 34297 [2021-11-07 01:15:18,644 INFO L226 Difference]: Without dead ends: 25735 [2021-11-07 01:15:18,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25735 states. [2021-11-07 01:15:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25735 to 8561. [2021-11-07 01:15:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8556 states have (on average 1.8855773726040206) internal successors, (16133), 8560 states have internal predecessors, (16133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16133 transitions. [2021-11-07 01:15:19,216 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16133 transitions. Word has length 49 [2021-11-07 01:15:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:19,217 INFO L470 AbstractCegarLoop]: Abstraction has 8561 states and 16133 transitions. [2021-11-07 01:15:19,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16133 transitions. [2021-11-07 01:15:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:15:19,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:19,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:19,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:19,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:19,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -385277059, now seen corresponding path program 1 times [2021-11-07 01:15:19,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:19,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271565146] [2021-11-07 01:15:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:19,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:19,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:19,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:19,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:15:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:15:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:20,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:20,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:20,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271565146] [2021-11-07 01:15:20,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271565146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:20,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:20,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:20,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901017744] [2021-11-07 01:15:20,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:20,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:20,376 INFO L87 Difference]: Start difference. First operand 8561 states and 16133 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:21,315 INFO L93 Difference]: Finished difference Result 23957 states and 45159 transitions. [2021-11-07 01:15:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 01:15:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:21,363 INFO L225 Difference]: With dead ends: 23957 [2021-11-07 01:15:21,363 INFO L226 Difference]: Without dead ends: 15417 [2021-11-07 01:15:21,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15417 states. [2021-11-07 01:15:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15417 to 8561. [2021-11-07 01:15:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8556 states have (on average 1.8848761103319307) internal successors, (16127), 8560 states have internal predecessors, (16127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16127 transitions. [2021-11-07 01:15:21,906 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16127 transitions. Word has length 50 [2021-11-07 01:15:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 8561 states and 16127 transitions. [2021-11-07 01:15:21,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16127 transitions. [2021-11-07 01:15:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:15:21,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:21,915 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:21,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:22,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:22,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1210377482, now seen corresponding path program 1 times [2021-11-07 01:15:22,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:22,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432866855] [2021-11-07 01:15:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:22,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:22,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:22,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:15:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:22,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:15:22,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:22,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:23,107 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:23,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432866855] [2021-11-07 01:15:23,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432866855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:23,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:23,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:15:23,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727863146] [2021-11-07 01:15:23,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:15:23,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:15:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:15:23,110 INFO L87 Difference]: Start difference. First operand 8561 states and 16127 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:26,142 INFO L93 Difference]: Finished difference Result 47948 states and 90368 transitions. [2021-11-07 01:15:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:15:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:15:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:26,297 INFO L225 Difference]: With dead ends: 47948 [2021-11-07 01:15:26,297 INFO L226 Difference]: Without dead ends: 39411 [2021-11-07 01:15:26,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:15:26,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39411 states. [2021-11-07 01:15:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39411 to 8563. [2021-11-07 01:15:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8563 states, 8558 states have (on average 1.8840850666043467) internal successors, (16124), 8562 states have internal predecessors, (16124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16124 transitions. [2021-11-07 01:15:26,863 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16124 transitions. Word has length 55 [2021-11-07 01:15:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:26,865 INFO L470 AbstractCegarLoop]: Abstraction has 8563 states and 16124 transitions. [2021-11-07 01:15:26,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16124 transitions. [2021-11-07 01:15:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:15:26,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:26,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:26,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:27,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:27,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 147397052, now seen corresponding path program 1 times [2021-11-07 01:15:27,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:27,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225925566] [2021-11-07 01:15:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:27,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:27,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:27,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:15:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:27,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:15:27,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:27,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:27,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:27,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225925566] [2021-11-07 01:15:27,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225925566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:27,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:27,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:15:27,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135442287] [2021-11-07 01:15:27,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:27,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:27,916 INFO L87 Difference]: Start difference. First operand 8563 states and 16124 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:36,290 INFO L93 Difference]: Finished difference Result 29037 states and 54784 transitions. [2021-11-07 01:15:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:15:36,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:15:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:36,366 INFO L225 Difference]: With dead ends: 29037 [2021-11-07 01:15:36,366 INFO L226 Difference]: Without dead ends: 20504 [2021-11-07 01:15:36,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:15:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2021-11-07 01:15:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 8563. [2021-11-07 01:15:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8563 states, 8558 states have (on average 1.8153774246319234) internal successors, (15536), 8562 states have internal predecessors, (15536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 15536 transitions. [2021-11-07 01:15:36,875 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 15536 transitions. Word has length 56 [2021-11-07 01:15:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 8563 states and 15536 transitions. [2021-11-07 01:15:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 15536 transitions. [2021-11-07 01:15:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:15:36,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:36,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:36,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:37,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:37,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash -698661370, now seen corresponding path program 1 times [2021-11-07 01:15:37,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:37,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089019323] [2021-11-07 01:15:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:37,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:37,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:37,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:15:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:37,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:37,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:37,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:37,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:37,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089019323] [2021-11-07 01:15:37,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089019323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:37,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:37,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:15:37,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994378339] [2021-11-07 01:15:37,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:37,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:37,978 INFO L87 Difference]: Start difference. First operand 8563 states and 15536 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:44,028 INFO L93 Difference]: Finished difference Result 39408 states and 72682 transitions. [2021-11-07 01:15:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:15:44,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2021-11-07 01:15:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:44,179 INFO L225 Difference]: With dead ends: 39408 [2021-11-07 01:15:44,179 INFO L226 Difference]: Without dead ends: 30902 [2021-11-07 01:15:44,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:15:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30902 states. [2021-11-07 01:15:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30902 to 11851. [2021-11-07 01:15:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11846 states have (on average 1.8160560526760088) internal successors, (21513), 11850 states have internal predecessors, (21513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 21513 transitions. [2021-11-07 01:15:44,998 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 21513 transitions. Word has length 68 [2021-11-07 01:15:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:45,003 INFO L470 AbstractCegarLoop]: Abstraction has 11851 states and 21513 transitions. [2021-11-07 01:15:45,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 21513 transitions. [2021-11-07 01:15:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:15:45,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:45,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:45,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:45,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:45,225 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:45,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1009558157, now seen corresponding path program 1 times [2021-11-07 01:15:45,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:45,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823345283] [2021-11-07 01:15:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:45,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:45,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:45,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:45,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:15:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:45,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:15:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:46,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:47,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:47,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823345283] [2021-11-07 01:15:47,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823345283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:47,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:47,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:15:47,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575919207] [2021-11-07 01:15:47,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:15:47,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:15:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:15:47,271 INFO L87 Difference]: Start difference. First operand 11851 states and 21513 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:51,994 INFO L93 Difference]: Finished difference Result 44522 states and 80954 transitions. [2021-11-07 01:15:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:15:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 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 71 [2021-11-07 01:15:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:52,038 INFO L225 Difference]: With dead ends: 44522 [2021-11-07 01:15:52,039 INFO L226 Difference]: Without dead ends: 32720 [2021-11-07 01:15:52,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:15:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32720 states. [2021-11-07 01:15:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32720 to 19264. [2021-11-07 01:15:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19264 states, 19259 states have (on average 1.8041954410924763) internal successors, (34747), 19263 states have internal predecessors, (34747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19264 states to 19264 states and 34747 transitions. [2021-11-07 01:15:53,024 INFO L78 Accepts]: Start accepts. Automaton has 19264 states and 34747 transitions. Word has length 71 [2021-11-07 01:15:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:53,024 INFO L470 AbstractCegarLoop]: Abstraction has 19264 states and 34747 transitions. [2021-11-07 01:15:53,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19264 states and 34747 transitions. [2021-11-07 01:15:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:15:53,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:53,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:53,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:53,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:53,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:15:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -537121478, now seen corresponding path program 1 times [2021-11-07 01:15:53,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:53,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293107813] [2021-11-07 01:15:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:53,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:53,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:53,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:15:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:53,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:15:53,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:53,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:54,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:54,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293107813] [2021-11-07 01:15:54,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293107813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:54,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:54,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:15:54,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170979206] [2021-11-07 01:15:54,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:15:54,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:15:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:15:54,209 INFO L87 Difference]: Start difference. First operand 19264 states and 34747 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:03,925 INFO L93 Difference]: Finished difference Result 92957 states and 169121 transitions. [2021-11-07 01:16:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:16:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2021-11-07 01:16:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:04,045 INFO L225 Difference]: With dead ends: 92957 [2021-11-07 01:16:04,045 INFO L226 Difference]: Without dead ends: 73741 [2021-11-07 01:16:04,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73741 states. [2021-11-07 01:16:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73741 to 25028. [2021-11-07 01:16:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25028 states, 25023 states have (on average 1.8022219558006634) internal successors, (45097), 25027 states have internal predecessors, (45097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25028 states to 25028 states and 45097 transitions. [2021-11-07 01:16:06,319 INFO L78 Accepts]: Start accepts. Automaton has 25028 states and 45097 transitions. Word has length 72 [2021-11-07 01:16:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:06,319 INFO L470 AbstractCegarLoop]: Abstraction has 25028 states and 45097 transitions. [2021-11-07 01:16:06,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 25028 states and 45097 transitions. [2021-11-07 01:16:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:16:06,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:06,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:06,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:06,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:16:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1611367599, now seen corresponding path program 1 times [2021-11-07 01:16:06,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:06,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987189389] [2021-11-07 01:16:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:06,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:06,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:06,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:16:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:07,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:16:07,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:07,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:07,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:07,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987189389] [2021-11-07 01:16:07,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987189389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:07,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:07,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:16:07,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904630868] [2021-11-07 01:16:07,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:07,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:07,611 INFO L87 Difference]: Start difference. First operand 25028 states and 45097 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:17,404 INFO L93 Difference]: Finished difference Result 84994 states and 155275 transitions. [2021-11-07 01:16:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:16:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-07 01:16:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:17,486 INFO L225 Difference]: With dead ends: 84994 [2021-11-07 01:16:17,486 INFO L226 Difference]: Without dead ends: 60001 [2021-11-07 01:16:17,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:16:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60001 states. [2021-11-07 01:16:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60001 to 39052. [2021-11-07 01:16:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39052 states, 39047 states have (on average 1.763899915486465) internal successors, (68875), 39051 states have internal predecessors, (68875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39052 states to 39052 states and 68875 transitions. [2021-11-07 01:16:19,272 INFO L78 Accepts]: Start accepts. Automaton has 39052 states and 68875 transitions. Word has length 73 [2021-11-07 01:16:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:19,272 INFO L470 AbstractCegarLoop]: Abstraction has 39052 states and 68875 transitions. [2021-11-07 01:16:19,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 39052 states and 68875 transitions. [2021-11-07 01:16:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:16:19,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:19,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:19,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:19,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:19,482 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:16:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash 420677619, now seen corresponding path program 1 times [2021-11-07 01:16:19,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:19,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900758921] [2021-11-07 01:16:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:19,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:19,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:19,484 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:19,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:16:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:19,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:19,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:20,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:20,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:20,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900758921] [2021-11-07 01:16:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900758921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:20,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:16:20,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123599388] [2021-11-07 01:16:20,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:20,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:20,381 INFO L87 Difference]: Start difference. First operand 39052 states and 68875 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:21,880 INFO L93 Difference]: Finished difference Result 68215 states and 118950 transitions. [2021-11-07 01:16:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:21,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 75 [2021-11-07 01:16:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:21,933 INFO L225 Difference]: With dead ends: 68215 [2021-11-07 01:16:21,933 INFO L226 Difference]: Without dead ends: 40261 [2021-11-07 01:16:21,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40261 states. [2021-11-07 01:16:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40261 to 40251. [2021-11-07 01:16:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40251 states, 40246 states have (on average 1.7547333896536301) internal successors, (70621), 40250 states have internal predecessors, (70621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40251 states to 40251 states and 70621 transitions. [2021-11-07 01:16:23,608 INFO L78 Accepts]: Start accepts. Automaton has 40251 states and 70621 transitions. Word has length 75 [2021-11-07 01:16:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:23,609 INFO L470 AbstractCegarLoop]: Abstraction has 40251 states and 70621 transitions. [2021-11-07 01:16:23,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40251 states and 70621 transitions. [2021-11-07 01:16:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:16:23,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:23,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:23,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:23,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:23,815 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:16:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash -280922255, now seen corresponding path program 1 times [2021-11-07 01:16:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:23,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641781085] [2021-11-07 01:16:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:23,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:23,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:23,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:16:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:24,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:24,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:24,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:24,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:24,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641781085] [2021-11-07 01:16:24,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641781085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:24,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:24,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:16:24,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022370175] [2021-11-07 01:16:24,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:16:24,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:24,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:16:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:16:24,781 INFO L87 Difference]: Start difference. First operand 40251 states and 70621 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:31,857 INFO L93 Difference]: Finished difference Result 99136 states and 176470 transitions. [2021-11-07 01:16:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:16:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 75 [2021-11-07 01:16:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:31,947 INFO L225 Difference]: With dead ends: 99136 [2021-11-07 01:16:31,947 INFO L226 Difference]: Without dead ends: 73038 [2021-11-07 01:16:31,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:16:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73038 states. [2021-11-07 01:16:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73038 to 40203. [2021-11-07 01:16:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40203 states, 40198 states have (on average 1.7544405194288273) internal successors, (70525), 40202 states have internal predecessors, (70525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40203 states to 40203 states and 70525 transitions. [2021-11-07 01:16:33,790 INFO L78 Accepts]: Start accepts. Automaton has 40203 states and 70525 transitions. Word has length 75 [2021-11-07 01:16:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:33,791 INFO L470 AbstractCegarLoop]: Abstraction has 40203 states and 70525 transitions. [2021-11-07 01:16:33,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40203 states and 70525 transitions. [2021-11-07 01:16:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:16:33,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:33,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:33,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:33,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:33,994 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:16:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2087000449, now seen corresponding path program 1 times [2021-11-07 01:16:33,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:33,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956271923] [2021-11-07 01:16:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:33,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:33,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:33,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47ee0f9-758a-4b76-8f43-100bfde77ce9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:16:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:34,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:34,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:34,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:16:35,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:35,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956271923] [2021-11-07 01:16:35,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956271923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:35,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:35,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:16:35,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993945311] [2021-11-07 01:16:35,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:35,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:35,204 INFO L87 Difference]: Start difference. First operand 40203 states and 70525 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:37,724 INFO L93 Difference]: Finished difference Result 95968 states and 168289 transitions. [2021-11-07 01:16:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:37,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-07 01:16:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:37,814 INFO L225 Difference]: With dead ends: 95968 [2021-11-07 01:16:37,814 INFO L226 Difference]: Without dead ends: 63163 [2021-11-07 01:16:37,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63163 states.