./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.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_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/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_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/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_3ba2edb7-6580-46ce-99dd-28935b69a343/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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:10,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:10,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:11,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:11,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:11,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:11,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:11,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:11,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:11,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:11,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:11,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:11,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:11,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:11,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:11,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:11,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:11,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:11,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:11,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:11,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:11,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:11,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:11,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:11,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:11,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:11,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:11,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:11,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:11,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:11,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:11,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:11,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:11,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:11,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:11,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:11,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:11,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:11,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:11,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:11,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:11,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:25:11,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:11,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:11,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:11,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:11,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:11,140 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:11,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:25:11,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:11,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:11,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:25:11,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:25:11,142 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:11,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:25:11,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:25:11,143 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:25:11,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:11,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:25:11,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:25:11,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:25:11,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:11,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:11,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:11,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:11,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:11,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:25:11,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:11,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:11,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:11,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:11,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:11,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:11,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:11,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:11,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:11,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:25:11,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:25:11,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:11,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:11,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:11,151 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_3ba2edb7-6580-46ce-99dd-28935b69a343/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2021-11-07 01:25:11,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:11,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:11,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:11,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:11,450 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:11,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-07 01:25:11,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/ca4a8c2ff/3379c0ec50364c0c8a44de41793a4245/FLAG6b0e8620e [2021-11-07 01:25:12,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:12,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-07 01:25:12,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/ca4a8c2ff/3379c0ec50364c0c8a44de41793a4245/FLAG6b0e8620e [2021-11-07 01:25:12,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/ca4a8c2ff/3379c0ec50364c0c8a44de41793a4245 [2021-11-07 01:25:12,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:12,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:12,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:12,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:12,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:12,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:12" (1/1) ... [2021-11-07 01:25:12,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1a3f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:12, skipping insertion in model container [2021-11-07 01:25:12,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:12" (1/1) ... [2021-11-07 01:25:12,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:12,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:13,089 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_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-07 01:25:13,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:13,153 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 01:25:13,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24f6255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:13, skipping insertion in model container [2021-11-07 01:25:13,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:13,154 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:25:13,157 INFO L168 Benchmark]: Toolchain (without parser) took 813.36 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 63.5 MB in the beginning and 81.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:13,158 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:13,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.86 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 63.5 MB in the beginning and 81.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:13,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 810.86 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 63.5 MB in the beginning and 81.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 452]: 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_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/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_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/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_3ba2edb7-6580-46ce-99dd-28935b69a343/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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:15,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:15,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:15,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:15,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:15,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:15,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:15,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:15,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:15,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:15,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:15,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:15,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:15,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:15,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:15,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:15,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:15,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:15,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:15,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:15,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:15,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:15,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:15,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:15,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:15,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:15,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:15,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:15,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:15,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:15,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:15,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:15,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:15,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:15,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:15,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:15,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:15,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:15,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:15,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:15,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:15,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:25:15,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:15,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:15,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:15,637 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:15,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:15,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:15,637 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:15,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:15,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:15,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:15,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:25:15,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:25:15,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:15,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:15,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:15,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:15,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:15,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:25:15,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:25:15,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:25:15,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:15,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:15,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:15,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:15,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:25:15,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:15,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:15,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:15,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:15,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:15,645 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:25:15,645 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:15,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:15,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:15,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:15,647 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_3ba2edb7-6580-46ce-99dd-28935b69a343/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2021-11-07 01:25:16,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:16,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:16,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:16,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:16,082 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:16,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-07 01:25:16,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/b8b065c30/bd96c1dfbfd649aa954c3509aa7947be/FLAGfa0f5f5cf [2021-11-07 01:25:16,925 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:16,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-07 01:25:16,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/b8b065c30/bd96c1dfbfd649aa954c3509aa7947be/FLAGfa0f5f5cf [2021-11-07 01:25:17,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/data/b8b065c30/bd96c1dfbfd649aa954c3509aa7947be [2021-11-07 01:25:17,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:17,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:17,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:17,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:17,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:17,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:17" (1/1) ... [2021-11-07 01:25:17,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1648bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:17, skipping insertion in model container [2021-11-07 01:25:17,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:17" (1/1) ... [2021-11-07 01:25:17,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:17,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:17,765 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_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-07 01:25:17,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:17,831 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:25:17,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:17,960 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_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-07 01:25:17,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:18,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:25:18,140 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_3ba2edb7-6580-46ce-99dd-28935b69a343/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-07 01:25:18,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:18,205 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:25:18,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18 WrapperNode [2021-11-07 01:25:18,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:18,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:18,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:25:18,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:25:18,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:18,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:18,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:18,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:25:18,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:25:18,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:25:18,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:18,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:18,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:19,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:19,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:19,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:19,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:25:19,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:25:19,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:25:19,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:25:19,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (1/1) ... [2021-11-07 01:25:19,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:19,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:19,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:25:19,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:25:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:25:34,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:25:34,301 INFO L299 CfgBuilder]: Removed 1497 assume(true) statements. [2021-11-07 01:25:34,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:34 BoogieIcfgContainer [2021-11-07 01:25:34,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:25:34,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:25:34,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:25:34,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:25:34,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:17" (1/3) ... [2021-11-07 01:25:34,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a314d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:34, skipping insertion in model container [2021-11-07 01:25:34,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:18" (2/3) ... [2021-11-07 01:25:34,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251a314d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:34, skipping insertion in model container [2021-11-07 01:25:34,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:34" (3/3) ... [2021-11-07 01:25:34,318 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2021-11-07 01:25:34,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:25:34,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:25:34,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:25:34,402 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 01:25:34,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:25:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 6303 states, 6292 states have (on average 1.8857279084551812) internal successors, (11865), 6302 states have internal predecessors, (11865), 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 01:25:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:25:34,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:34,539 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] [2021-11-07 01:25:34,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2044090443, now seen corresponding path program 1 times [2021-11-07 01:25:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:34,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3184268] [2021-11-07 01:25:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:34,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:34,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:34,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:25:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:25:34,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:35,202 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 01:25:35,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:35,367 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 01:25:35,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:35,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3184268] [2021-11-07 01:25:35,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3184268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:35,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:35,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:25:35,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291114825] [2021-11-07 01:25:35,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:25:35,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:25:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:35,409 INFO L87 Difference]: Start difference. First operand has 6303 states, 6292 states have (on average 1.8857279084551812) internal successors, (11865), 6302 states have internal predecessors, (11865), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:38,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:38,264 INFO L93 Difference]: Finished difference Result 43743 states and 82336 transitions. [2021-11-07 01:25:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:25:38,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:25:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:38,487 INFO L225 Difference]: With dead ends: 43743 [2021-11-07 01:25:38,488 INFO L226 Difference]: Without dead ends: 37441 [2021-11-07 01:25:38,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:25:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37441 states. [2021-11-07 01:25:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37441 to 6315. [2021-11-07 01:25:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 6305 states have (on average 1.8813639968279143) internal successors, (11862), 6314 states have internal predecessors, (11862), 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 01:25:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 11862 transitions. [2021-11-07 01:25:39,105 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 11862 transitions. Word has length 47 [2021-11-07 01:25:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:39,106 INFO L470 AbstractCegarLoop]: Abstraction has 6315 states and 11862 transitions. [2021-11-07 01:25:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 11862 transitions. [2021-11-07 01:25:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:25:39,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:39,119 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 01:25:39,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:25:39,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 334888117, now seen corresponding path program 1 times [2021-11-07 01:25:39,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:39,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101715590] [2021-11-07 01:25:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:39,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:39,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:39,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:25:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:39,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:39,841 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 01:25:39,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:39,999 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 01:25:39,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:39,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101715590] [2021-11-07 01:25:40,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101715590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:40,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371603256] [2021-11-07 01:25:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:40,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:40,003 INFO L87 Difference]: Start difference. First operand 6315 states and 11862 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 01:25:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:40,208 INFO L93 Difference]: Finished difference Result 12542 states and 23567 transitions. [2021-11-07 01:25:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:40,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 01:25:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:40,225 INFO L225 Difference]: With dead ends: 12542 [2021-11-07 01:25:40,225 INFO L226 Difference]: Without dead ends: 6241 [2021-11-07 01:25:40,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 01:25:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-11-07 01:25:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6241. [2021-11-07 01:25:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6231 states have (on average 1.8805970149253732) internal successors, (11718), 6240 states have internal predecessors, (11718), 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 01:25:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 11718 transitions. [2021-11-07 01:25:40,603 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 11718 transitions. Word has length 49 [2021-11-07 01:25:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 6241 states and 11718 transitions. [2021-11-07 01:25:40,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 01:25:40,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 11718 transitions. [2021-11-07 01:25:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:25:40,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:40,607 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] [2021-11-07 01:25:40,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:40,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash -262441261, now seen corresponding path program 1 times [2021-11-07 01:25:40,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:40,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456251072] [2021-11-07 01:25:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:40,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:40,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:40,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:25:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:41,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:25:41,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:41,384 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 01:25:41,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:41,559 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 01:25:41,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:41,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456251072] [2021-11-07 01:25:41,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456251072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:41,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:41,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:41,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297376673] [2021-11-07 01:25:41,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:41,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:41,562 INFO L87 Difference]: Start difference. First operand 6241 states and 11718 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:42,121 INFO L93 Difference]: Finished difference Result 12456 states and 23399 transitions. [2021-11-07 01:25:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:25:42,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:25:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:42,138 INFO L225 Difference]: With dead ends: 12456 [2021-11-07 01:25:42,138 INFO L226 Difference]: Without dead ends: 6241 [2021-11-07 01:25:42,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:25:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-11-07 01:25:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6241. [2021-11-07 01:25:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6231 states have (on average 1.878992136093725) internal successors, (11708), 6240 states have internal predecessors, (11708), 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 01:25:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 11708 transitions. [2021-11-07 01:25:42,394 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 11708 transitions. Word has length 51 [2021-11-07 01:25:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:42,394 INFO L470 AbstractCegarLoop]: Abstraction has 6241 states and 11708 transitions. [2021-11-07 01:25:42,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 11708 transitions. [2021-11-07 01:25:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:25:42,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:42,397 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 01:25:42,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:42,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:42,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash -598931043, now seen corresponding path program 1 times [2021-11-07 01:25:42,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:42,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961987036] [2021-11-07 01:25:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:42,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:42,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:42,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:25:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:43,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:43,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:43,201 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 01:25:43,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:43,393 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 01:25:43,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:43,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961987036] [2021-11-07 01:25:43,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961987036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:43,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:43,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:25:43,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66884468] [2021-11-07 01:25:43,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:25:43,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:25:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:25:43,397 INFO L87 Difference]: Start difference. First operand 6241 states and 11708 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:25:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:50,878 INFO L93 Difference]: Finished difference Result 27996 states and 52109 transitions. [2021-11-07 01:25:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:25:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 55 [2021-11-07 01:25:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:50,936 INFO L225 Difference]: With dead ends: 27996 [2021-11-07 01:25:50,936 INFO L226 Difference]: Without dead ends: 21825 [2021-11-07 01:25:50,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:25:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21825 states. [2021-11-07 01:25:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21825 to 10969. [2021-11-07 01:25:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 10959 states have (on average 1.8787298111141528) internal successors, (20589), 10968 states have internal predecessors, (20589), 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 01:25:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 20589 transitions. [2021-11-07 01:25:51,478 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 20589 transitions. Word has length 55 [2021-11-07 01:25:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:51,479 INFO L470 AbstractCegarLoop]: Abstraction has 10969 states and 20589 transitions. [2021-11-07 01:25:51,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:25:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 20589 transitions. [2021-11-07 01:25:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:25:51,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:51,483 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 01:25:51,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:51,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:51,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1358521118, now seen corresponding path program 1 times [2021-11-07 01:25:51,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:51,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295643787] [2021-11-07 01:25:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:51,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:51,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:51,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:25:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:52,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:52,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:52,285 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 01:25:52,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:52,442 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 01:25:52,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:52,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295643787] [2021-11-07 01:25:52,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295643787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:52,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:52,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:25:52,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135169182] [2021-11-07 01:25:52,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:25:52,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:25:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:25:52,445 INFO L87 Difference]: Start difference. First operand 10969 states and 20589 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 01:25:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:56,572 INFO L93 Difference]: Finished difference Result 91050 states and 171038 transitions. [2021-11-07 01:25:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:25:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 01:25:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:56,783 INFO L225 Difference]: With dead ends: 91050 [2021-11-07 01:25:56,783 INFO L226 Difference]: Without dead ends: 80151 [2021-11-07 01:25:56,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 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 01:25:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80151 states. [2021-11-07 01:25:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80151 to 20603. [2021-11-07 01:25:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20603 states, 20593 states have (on average 1.8777254406837274) internal successors, (38668), 20602 states have internal predecessors, (38668), 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 01:25:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20603 states to 20603 states and 38668 transitions. [2021-11-07 01:25:58,174 INFO L78 Accepts]: Start accepts. Automaton has 20603 states and 38668 transitions. Word has length 55 [2021-11-07 01:25:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:58,175 INFO L470 AbstractCegarLoop]: Abstraction has 20603 states and 38668 transitions. [2021-11-07 01:25:58,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 01:25:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 20603 states and 38668 transitions. [2021-11-07 01:25:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:25:58,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:58,177 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 01:25:58,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:58,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:58,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 491221222, now seen corresponding path program 1 times [2021-11-07 01:25:58,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:58,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357110642] [2021-11-07 01:25:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:58,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:58,406 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:58,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:25:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:58,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:58,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:58,924 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 01:25:58,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:59,054 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 01:25:59,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:59,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357110642] [2021-11-07 01:25:59,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357110642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:59,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:59,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:59,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263865338] [2021-11-07 01:25:59,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:59,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:59,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:59,058 INFO L87 Difference]: Start difference. First operand 20603 states and 38668 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:26:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:00,609 INFO L93 Difference]: Finished difference Result 60809 states and 114130 transitions. [2021-11-07 01:26:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:26:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:00,691 INFO L225 Difference]: With dead ends: 60809 [2021-11-07 01:26:00,691 INFO L226 Difference]: Without dead ends: 40238 [2021-11-07 01:26:00,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 01:26:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40238 states. [2021-11-07 01:26:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40238 to 20479. [2021-11-07 01:26:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20479 states, 20469 states have (on average 1.876984708583712) internal successors, (38420), 20478 states have internal predecessors, (38420), 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 01:26:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 38420 transitions. [2021-11-07 01:26:01,797 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 38420 transitions. Word has length 56 [2021-11-07 01:26:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:01,798 INFO L470 AbstractCegarLoop]: Abstraction has 20479 states and 38420 transitions. [2021-11-07 01:26:01,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:26:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 38420 transitions. [2021-11-07 01:26:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:26:01,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:01,801 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 01:26:01,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:02,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:02,023 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash -136862999, now seen corresponding path program 1 times [2021-11-07 01:26:02,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:02,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381987129] [2021-11-07 01:26:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:02,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:02,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:02,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:26:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:02,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:26:02,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:02,616 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 01:26:02,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:02,817 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 01:26:02,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:02,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381987129] [2021-11-07 01:26:02,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381987129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:02,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:02,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:26:02,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641968686] [2021-11-07 01:26:02,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:26:02,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:26:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:26:02,819 INFO L87 Difference]: Start difference. First operand 20479 states and 38420 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 01:26:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:12,526 INFO L93 Difference]: Finished difference Result 77905 states and 145713 transitions. [2021-11-07 01:26:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:26:12,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 01:26:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:12,621 INFO L225 Difference]: With dead ends: 77905 [2021-11-07 01:26:12,621 INFO L226 Difference]: Without dead ends: 57460 [2021-11-07 01:26:12,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:26:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57460 states. [2021-11-07 01:26:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57460 to 39885. [2021-11-07 01:26:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39885 states, 39875 states have (on average 1.8596363636363635) internal successors, (74153), 39884 states have internal predecessors, (74153), 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 01:26:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39885 states to 39885 states and 74153 transitions. [2021-11-07 01:26:14,328 INFO L78 Accepts]: Start accepts. Automaton has 39885 states and 74153 transitions. Word has length 56 [2021-11-07 01:26:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:14,329 INFO L470 AbstractCegarLoop]: Abstraction has 39885 states and 74153 transitions. [2021-11-07 01:26:14,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 01:26:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 39885 states and 74153 transitions. [2021-11-07 01:26:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:26:14,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:14,331 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] [2021-11-07 01:26:14,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:14,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:14,545 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -424208374, now seen corresponding path program 1 times [2021-11-07 01:26:14,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:14,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103732263] [2021-11-07 01:26:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:14,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:14,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:26:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:14,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:26:14,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:15,127 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 01:26:15,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:15,244 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 01:26:15,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:15,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103732263] [2021-11-07 01:26:15,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103732263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:15,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:15,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:26:15,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670559515] [2021-11-07 01:26:15,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:15,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:26:15,247 INFO L87 Difference]: Start difference. First operand 39885 states and 74153 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:19,418 INFO L93 Difference]: Finished difference Result 156174 states and 290435 transitions. [2021-11-07 01:26:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:26:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:26:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:19,636 INFO L225 Difference]: With dead ends: 156174 [2021-11-07 01:26:19,636 INFO L226 Difference]: Without dead ends: 116326 [2021-11-07 01:26:19,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 01:26:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116326 states. [2021-11-07 01:26:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116326 to 39771. [2021-11-07 01:26:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39771 states, 39761 states have (on average 1.8541535675662082) internal successors, (73723), 39770 states have internal predecessors, (73723), 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 01:26:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39771 states to 39771 states and 73723 transitions. [2021-11-07 01:26:21,759 INFO L78 Accepts]: Start accepts. Automaton has 39771 states and 73723 transitions. Word has length 59 [2021-11-07 01:26:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:21,760 INFO L470 AbstractCegarLoop]: Abstraction has 39771 states and 73723 transitions. [2021-11-07 01:26:21,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 39771 states and 73723 transitions. [2021-11-07 01:26:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:26:21,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:21,762 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] [2021-11-07 01:26:21,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:21,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:21,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash -895008859, now seen corresponding path program 1 times [2021-11-07 01:26:21,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:21,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262675965] [2021-11-07 01:26:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:21,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:21,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:21,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ba2edb7-6580-46ce-99dd-28935b69a343/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:26:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:22,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:22,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:22,623 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 01:26:22,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:22,782 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 01:26:22,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262675965] [2021-11-07 01:26:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262675965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:22,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:26:22,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106955046] [2021-11-07 01:26:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:26:22,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:26:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:26:22,784 INFO L87 Difference]: Start difference. First operand 39771 states and 73723 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 01:26:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:33,493 INFO L93 Difference]: Finished difference Result 324844 states and 603970 transitions. [2021-11-07 01:26:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:26:33,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-07 01:26:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:34,047 INFO L225 Difference]: With dead ends: 324844 [2021-11-07 01:26:34,048 INFO L226 Difference]: Without dead ends: 285129 [2021-11-07 01:26:34,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 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 01:26:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285129 states.