./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:17:06,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:17:06,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:17:06,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:17:06,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:17:06,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:17:06,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:17:06,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:17:06,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:17:06,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:17:06,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:17:06,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:17:06,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:17:06,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:17:06,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:17:06,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:17:06,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:17:06,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:17:06,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:17:06,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:17:06,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:17:06,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:17:06,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:17:06,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:17:06,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:17:06,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:17:06,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:17:06,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:17:06,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:17:06,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:17:06,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:17:06,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:17:06,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:17:06,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:17:06,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:17:06,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:17:06,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:17:06,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:17:06,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:17:06,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:17:06,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:17:06,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:17:06,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:17:06,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:17:06,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:17:06,881 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:17:06,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:17:06,881 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:17:06,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:17:06,882 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:17:06,882 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:17:06,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:17:06,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:17:06,882 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:17:06,883 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:17:06,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:17:06,883 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:17:06,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:17:06,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:17:06,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:17:06,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:17:06,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:17:06,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:17:06,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:17:06,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:17:06,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:17:06,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:17:06,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:17:06,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:17:06,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:17:06,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:17:06,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:17:06,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:17:06,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:17:06,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:17:06,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:17:06,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:17:06,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:17:06,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:17:06,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:17:06,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:17:06,889 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2021-11-03 04:17:07,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:17:07,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:17:07,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:17:07,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:17:07,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:17:07,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-03 04:17:07,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/6d55db54a/003e6978c21344df9826a390f7b55f51/FLAGf0f360214 [2021-11-03 04:17:07,898 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:17:07,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-03 04:17:07,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/6d55db54a/003e6978c21344df9826a390f7b55f51/FLAGf0f360214 [2021-11-03 04:17:08,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/6d55db54a/003e6978c21344df9826a390f7b55f51 [2021-11-03 04:17:08,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:17:08,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:17:08,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:17:08,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:17:08,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:17:08,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:17:08" (1/1) ... [2021-11-03 04:17:08,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1698c7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:08, skipping insertion in model container [2021-11-03 04:17:08,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:17:08" (1/1) ... [2021-11-03 04:17:08,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:17:08,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:17:08,570 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-03 04:17:08,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:17:08,780 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) [2021-11-03 04:17:08,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5efc97b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:08, skipping insertion in model container [2021-11-03 04:17:08,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:17:08,781 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:17:08,786 INFO L168 Benchmark]: Toolchain (without parser) took 667.20 ms. Allocated memory is still 107.0 MB. Free memory was 66.2 MB in the beginning and 67.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:17:08,788 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 85.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:17:08,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.64 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 67.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:17:08,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 85.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 662.64 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 67.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3055]: 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:17:11,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:17:11,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:17:11,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:17:11,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:17:11,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:17:11,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:17:11,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:17:11,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:17:11,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:17:11,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:17:11,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:17:11,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:17:11,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:17:11,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:17:11,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:17:11,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:17:11,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:17:11,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:17:11,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:17:11,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:17:11,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:17:11,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:17:11,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:17:11,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:17:11,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:17:11,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:17:11,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:17:11,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:17:11,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:17:11,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:17:11,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:17:11,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:17:11,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:17:11,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:17:11,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:17:11,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:17:11,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:17:11,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:17:11,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:17:11,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:17:11,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:17:11,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:17:11,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:17:11,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:17:11,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:17:11,129 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:17:11,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:17:11,130 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:17:11,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:17:11,131 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:17:11,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:17:11,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:17:11,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:17:11,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:17:11,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:17:11,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:17:11,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:17:11,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:17:11,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:17:11,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:17:11,136 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:17:11,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:17:11,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:17:11,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:17:11,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:17:11,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:17:11,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:17:11,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:17:11,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:17:11,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:17:11,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:17:11,140 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:17:11,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:17:11,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:17:11,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:17:11,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:17:11,141 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2021-11-03 04:17:11,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:17:11,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:17:11,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:17:11,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:17:11,499 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:17:11,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-03 04:17:11,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/354565a64/5674e9f4c83548bbaf06acbb649ae025/FLAG6ad94f23b [2021-11-03 04:17:12,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:17:12,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-03 04:17:12,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/354565a64/5674e9f4c83548bbaf06acbb649ae025/FLAG6ad94f23b [2021-11-03 04:17:12,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/data/354565a64/5674e9f4c83548bbaf06acbb649ae025 [2021-11-03 04:17:12,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:17:12,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:17:12,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:17:12,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:17:12,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:17:12,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:17:12" (1/1) ... [2021-11-03 04:17:12,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa93e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:12, skipping insertion in model container [2021-11-03 04:17:12,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:17:12" (1/1) ... [2021-11-03 04:17:12,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:17:12,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:17:13,020 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-03 04:17:13,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:17:13,168 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:17:13,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:17:13,285 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-03 04:17:13,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:17:13,332 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:17:13,402 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_1bb65b26-ab63-4d45-9f77-6e944ed645de/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-03 04:17:13,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:17:13,472 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:17:13,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13 WrapperNode [2021-11-03 04:17:13,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:17:13,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:17:13,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:17:13,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:17:13,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:17:13,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:17:13,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:17:13,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:17:13,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:17:13,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:17:13,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:17:13,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:17:13,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (1/1) ... [2021-11-03 04:17:13,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:17:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:17:14,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:17:14,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:17:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:17:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:17:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:17:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:17:21,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:17:21,997 INFO L299 CfgBuilder]: Removed 613 assume(true) statements. [2021-11-03 04:17:22,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:17:22 BoogieIcfgContainer [2021-11-03 04:17:22,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:17:22,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:17:22,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:17:22,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:17:22,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:17:12" (1/3) ... [2021-11-03 04:17:22,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8ac93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:17:22, skipping insertion in model container [2021-11-03 04:17:22,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:17:13" (2/3) ... [2021-11-03 04:17:22,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8ac93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:17:22, skipping insertion in model container [2021-11-03 04:17:22,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:17:22" (3/3) ... [2021-11-03 04:17:22,014 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2021-11-03 04:17:22,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:17:22,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:17:22,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:17:22,101 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 [2021-11-03 04:17:22,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:17:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 2496 states, 2490 states have (on average 1.8871485943775101) internal successors, (4699), 2495 states have internal predecessors, (4699), 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) [2021-11-03 04:17:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:17:22,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:22,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:22,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 793828150, now seen corresponding path program 1 times [2021-11-03 04:17:22,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:22,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762279288] [2021-11-03 04:17:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:22,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:22,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:22,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:17:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:17:22,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:22,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:22,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:22,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762279288] [2021-11-03 04:17:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762279288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:22,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:22,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:17:22,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768431751] [2021-11-03 04:17:22,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:17:22,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:17:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:17:22,868 INFO L87 Difference]: Start difference. First operand has 2496 states, 2490 states have (on average 1.8871485943775101) internal successors, (4699), 2495 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-03 04:17:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:22,976 INFO L93 Difference]: Finished difference Result 2515 states and 4722 transitions. [2021-11-03 04:17:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:17:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:17:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:23,014 INFO L225 Difference]: With dead ends: 2515 [2021-11-03 04:17:23,014 INFO L226 Difference]: Without dead ends: 2492 [2021-11-03 04:17:23,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:17:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-03 04:17:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2021-11-03 04:17:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2487 states have (on average 1.8845999195818255) internal successors, (4687), 2491 states have internal predecessors, (4687), 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) [2021-11-03 04:17:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4687 transitions. [2021-11-03 04:17:23,182 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4687 transitions. Word has length 44 [2021-11-03 04:17:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:23,183 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 4687 transitions. [2021-11-03 04:17:23,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-03 04:17:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4687 transitions. [2021-11-03 04:17:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:17:23,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:23,188 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] [2021-11-03 04:17:23,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:23,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:23,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1815140219, now seen corresponding path program 1 times [2021-11-03 04:17:23,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:23,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268043858] [2021-11-03 04:17:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:23,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:23,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:23,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:17:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:23,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:17:23,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:23,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:23,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:23,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268043858] [2021-11-03 04:17:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268043858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:23,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:23,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:17:23,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120228069] [2021-11-03 04:17:23,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:23,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:24,001 INFO L87 Difference]: Start difference. First operand 2492 states and 4687 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:24,188 INFO L93 Difference]: Finished difference Result 4971 states and 9355 transitions. [2021-11-03 04:17:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:17:24,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 04:17:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:24,207 INFO L225 Difference]: With dead ends: 4971 [2021-11-03 04:17:24,207 INFO L226 Difference]: Without dead ends: 2492 [2021-11-03 04:17:24,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-03 04:17:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2021-11-03 04:17:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2487 states have (on average 1.8821873743466024) internal successors, (4681), 2491 states have internal predecessors, (4681), 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) [2021-11-03 04:17:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4681 transitions. [2021-11-03 04:17:24,304 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4681 transitions. Word has length 46 [2021-11-03 04:17:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:24,305 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 4681 transitions. [2021-11-03 04:17:24,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4681 transitions. [2021-11-03 04:17:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:17:24,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:24,323 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] [2021-11-03 04:17:24,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:24,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:24,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -248118129, now seen corresponding path program 1 times [2021-11-03 04:17:24,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:24,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415067597] [2021-11-03 04:17:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:24,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:24,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:24,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:17:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:24,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:17:24,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:25,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:25,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:25,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415067597] [2021-11-03 04:17:25,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415067597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:25,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:25,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:17:25,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757694410] [2021-11-03 04:17:25,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:25,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:25,209 INFO L87 Difference]: Start difference. First operand 2492 states and 4681 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:25,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:25,425 INFO L93 Difference]: Finished difference Result 4935 states and 9278 transitions. [2021-11-03 04:17:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:17:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 04:17:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:25,443 INFO L225 Difference]: With dead ends: 4935 [2021-11-03 04:17:25,443 INFO L226 Difference]: Without dead ends: 2465 [2021-11-03 04:17:25,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:17:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-11-03 04:17:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2021-11-03 04:17:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2460 states have (on average 1.8800813008130082) internal successors, (4625), 2464 states have internal predecessors, (4625), 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) [2021-11-03 04:17:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4625 transitions. [2021-11-03 04:17:25,546 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4625 transitions. Word has length 51 [2021-11-03 04:17:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:25,547 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 4625 transitions. [2021-11-03 04:17:25,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4625 transitions. [2021-11-03 04:17:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:17:25,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:25,551 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] [2021-11-03 04:17:25,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:25,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:25,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash -560000463, now seen corresponding path program 1 times [2021-11-03 04:17:25,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:25,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086042999] [2021-11-03 04:17:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:25,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:25,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:25,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:17:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:26,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:17:26,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:26,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:26,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:26,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086042999] [2021-11-03 04:17:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086042999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:26,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:26,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:17:26,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788704162] [2021-11-03 04:17:26,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:26,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:26,464 INFO L87 Difference]: Start difference. First operand 2465 states and 4625 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2021-11-03 04:17:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:26,622 INFO L93 Difference]: Finished difference Result 4908 states and 9222 transitions. [2021-11-03 04:17:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:17:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 52 [2021-11-03 04:17:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:26,639 INFO L225 Difference]: With dead ends: 4908 [2021-11-03 04:17:26,639 INFO L226 Difference]: Without dead ends: 2465 [2021-11-03 04:17:26,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-11-03 04:17:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2021-11-03 04:17:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2460 states have (on average 1.8776422764227643) internal successors, (4619), 2464 states have internal predecessors, (4619), 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) [2021-11-03 04:17:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4619 transitions. [2021-11-03 04:17:26,745 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4619 transitions. Word has length 52 [2021-11-03 04:17:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:26,747 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 4619 transitions. [2021-11-03 04:17:26,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2021-11-03 04:17:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4619 transitions. [2021-11-03 04:17:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:17:26,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:26,750 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] [2021-11-03 04:17:26,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:26,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:26,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -176153278, now seen corresponding path program 1 times [2021-11-03 04:17:26,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:26,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545738528] [2021-11-03 04:17:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:26,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:26,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:27,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:17:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:27,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:17:27,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:27,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:27,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:27,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545738528] [2021-11-03 04:17:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545738528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:27,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:17:27,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934999529] [2021-11-03 04:17:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:17:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:17:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:17:27,756 INFO L87 Difference]: Start difference. First operand 2465 states and 4619 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-03 04:17:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:28,100 INFO L93 Difference]: Finished difference Result 4902 states and 9205 transitions. [2021-11-03 04:17:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:17:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 57 [2021-11-03 04:17:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:28,117 INFO L225 Difference]: With dead ends: 4902 [2021-11-03 04:17:28,117 INFO L226 Difference]: Without dead ends: 2462 [2021-11-03 04:17:28,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:17:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-11-03 04:17:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2462. [2021-11-03 04:17:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2457 states have (on average 1.8766788766788767) internal successors, (4611), 2461 states have internal predecessors, (4611), 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) [2021-11-03 04:17:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4611 transitions. [2021-11-03 04:17:28,253 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4611 transitions. Word has length 57 [2021-11-03 04:17:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 4611 transitions. [2021-11-03 04:17:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-03 04:17:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4611 transitions. [2021-11-03 04:17:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:17:28,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:28,256 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] [2021-11-03 04:17:28,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:28,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:28,470 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 364708626, now seen corresponding path program 1 times [2021-11-03 04:17:28,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:28,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918089884] [2021-11-03 04:17:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:28,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:28,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:28,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:17:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:28,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:17:28,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:29,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:29,284 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:29,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918089884] [2021-11-03 04:17:29,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918089884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:29,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:29,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:17:29,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278927114] [2021-11-03 04:17:29,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:29,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:29,287 INFO L87 Difference]: Start difference. First operand 2462 states and 4611 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-03 04:17:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:30,797 INFO L93 Difference]: Finished difference Result 9004 states and 16923 transitions. [2021-11-03 04:17:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:17:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:17:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:30,842 INFO L225 Difference]: With dead ends: 9004 [2021-11-03 04:17:30,842 INFO L226 Difference]: Without dead ends: 6573 [2021-11-03 04:17:30,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:17:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6573 states. [2021-11-03 04:17:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6573 to 2462. [2021-11-03 04:17:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2457 states have (on average 1.835164835164835) internal successors, (4509), 2461 states have internal predecessors, (4509), 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) [2021-11-03 04:17:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4509 transitions. [2021-11-03 04:17:31,012 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4509 transitions. Word has length 58 [2021-11-03 04:17:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:31,013 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 4509 transitions. [2021-11-03 04:17:31,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-03 04:17:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4509 transitions. [2021-11-03 04:17:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:17:31,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:31,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:31,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:31,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:31,245 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:31,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1170985470, now seen corresponding path program 1 times [2021-11-03 04:17:31,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:31,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064867996] [2021-11-03 04:17:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:31,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:31,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:31,249 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:31,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:17:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:31,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:17:31,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:31,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:32,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:32,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064867996] [2021-11-03 04:17:32,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064867996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:32,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:32,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:17:32,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013232248] [2021-11-03 04:17:32,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:32,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:32,165 INFO L87 Difference]: Start difference. First operand 2462 states and 4509 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-03 04:17:33,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:33,204 INFO L93 Difference]: Finished difference Result 6905 states and 12774 transitions. [2021-11-03 04:17:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:17:33,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-03 04:17:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:33,238 INFO L225 Difference]: With dead ends: 6905 [2021-11-03 04:17:33,239 INFO L226 Difference]: Without dead ends: 4492 [2021-11-03 04:17:33,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:17:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2021-11-03 04:17:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 2428. [2021-11-03 04:17:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2423 states have (on average 1.8353281056541477) internal successors, (4447), 2427 states have internal predecessors, (4447), 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) [2021-11-03 04:17:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4447 transitions. [2021-11-03 04:17:33,395 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4447 transitions. Word has length 66 [2021-11-03 04:17:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:33,396 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 4447 transitions. [2021-11-03 04:17:33,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-03 04:17:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4447 transitions. [2021-11-03 04:17:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 04:17:33,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:33,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:33,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:33,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:33,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1712632802, now seen corresponding path program 1 times [2021-11-03 04:17:33,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:33,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632704192] [2021-11-03 04:17:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:33,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:33,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:33,625 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:33,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:17:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:17:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:34,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:34,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:34,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632704192] [2021-11-03 04:17:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632704192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:34,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:34,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:17:34,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267236938] [2021-11-03 04:17:34,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:17:34,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:17:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:34,526 INFO L87 Difference]: Start difference. First operand 2428 states and 4447 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:36,212 INFO L93 Difference]: Finished difference Result 9618 states and 17741 transitions. [2021-11-03 04:17:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:17:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-03 04:17:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:36,230 INFO L225 Difference]: With dead ends: 9618 [2021-11-03 04:17:36,231 INFO L226 Difference]: Without dead ends: 7238 [2021-11-03 04:17:36,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:17:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-11-03 04:17:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 2432. [2021-11-03 04:17:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2427 states have (on average 1.8339513803049032) internal successors, (4451), 2431 states have internal predecessors, (4451), 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) [2021-11-03 04:17:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 4451 transitions. [2021-11-03 04:17:36,437 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 4451 transitions. Word has length 68 [2021-11-03 04:17:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:36,438 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 4451 transitions. [2021-11-03 04:17:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 4451 transitions. [2021-11-03 04:17:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:17:36,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:36,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:36,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:36,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:36,655 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1456100407, now seen corresponding path program 1 times [2021-11-03 04:17:36,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:36,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204382155] [2021-11-03 04:17:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:36,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:36,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:36,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:36,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:17:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:37,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:17:37,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:37,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:37,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:37,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204382155] [2021-11-03 04:17:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204382155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:37,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:37,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:17:37,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587994658] [2021-11-03 04:17:37,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:17:37,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:17:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:37,470 INFO L87 Difference]: Start difference. First operand 2432 states and 4451 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 04:17:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:41,515 INFO L93 Difference]: Finished difference Result 6049 states and 11031 transitions. [2021-11-03 04:17:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:17:41,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 69 [2021-11-03 04:17:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:41,527 INFO L225 Difference]: With dead ends: 6049 [2021-11-03 04:17:41,527 INFO L226 Difference]: Without dead ends: 4633 [2021-11-03 04:17:41,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2021-11-03 04:17:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4500. [2021-11-03 04:17:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4495 states have (on average 1.8413793103448275) internal successors, (8277), 4499 states have internal predecessors, (8277), 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) [2021-11-03 04:17:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 8277 transitions. [2021-11-03 04:17:41,810 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 8277 transitions. Word has length 69 [2021-11-03 04:17:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:41,811 INFO L470 AbstractCegarLoop]: Abstraction has 4500 states and 8277 transitions. [2021-11-03 04:17:41,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 04:17:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 8277 transitions. [2021-11-03 04:17:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:17:41,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:41,815 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:41,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:42,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:42,028 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1827749639, now seen corresponding path program 1 times [2021-11-03 04:17:42,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:42,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002388856] [2021-11-03 04:17:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:42,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:42,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:42,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:17:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:42,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:17:42,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:42,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:42,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:42,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002388856] [2021-11-03 04:17:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002388856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:42,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:42,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:17:42,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8358099] [2021-11-03 04:17:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:42,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:42,914 INFO L87 Difference]: Start difference. First operand 4500 states and 8277 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-03 04:17:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:44,054 INFO L93 Difference]: Finished difference Result 8101 states and 14836 transitions. [2021-11-03 04:17:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:17:44,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-03 04:17:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:44,065 INFO L225 Difference]: With dead ends: 8101 [2021-11-03 04:17:44,065 INFO L226 Difference]: Without dead ends: 4620 [2021-11-03 04:17:44,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2021-11-03 04:17:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4411. [2021-11-03 04:17:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4411 states, 4406 states have (on average 1.824557421697685) internal successors, (8039), 4410 states have internal predecessors, (8039), 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) [2021-11-03 04:17:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4411 states to 4411 states and 8039 transitions. [2021-11-03 04:17:44,289 INFO L78 Accepts]: Start accepts. Automaton has 4411 states and 8039 transitions. Word has length 69 [2021-11-03 04:17:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:44,290 INFO L470 AbstractCegarLoop]: Abstraction has 4411 states and 8039 transitions. [2021-11-03 04:17:44,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-03 04:17:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4411 states and 8039 transitions. [2021-11-03 04:17:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:17:44,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:44,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:44,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:44,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:44,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2075844719, now seen corresponding path program 1 times [2021-11-03 04:17:44,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:44,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519617382] [2021-11-03 04:17:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:44,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:44,514 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:44,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:17:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:45,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:17:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:45,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:45,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:45,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519617382] [2021-11-03 04:17:45,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519617382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:45,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:45,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:17:45,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495943578] [2021-11-03 04:17:45,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:17:45,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:17:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:45,370 INFO L87 Difference]: Start difference. First operand 4411 states and 8039 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-03 04:17:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:46,502 INFO L93 Difference]: Finished difference Result 31466 states and 57661 transitions. [2021-11-03 04:17:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:17:46,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:17:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:46,565 INFO L225 Difference]: With dead ends: 31466 [2021-11-03 04:17:46,565 INFO L226 Difference]: Without dead ends: 27099 [2021-11-03 04:17:46,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:17:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27099 states. [2021-11-03 04:17:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27099 to 8266. [2021-11-03 04:17:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8261 states have (on average 1.8334342089335431) internal successors, (15146), 8265 states have internal predecessors, (15146), 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) [2021-11-03 04:17:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 15146 transitions. [2021-11-03 04:17:47,215 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 15146 transitions. Word has length 71 [2021-11-03 04:17:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:47,215 INFO L470 AbstractCegarLoop]: Abstraction has 8266 states and 15146 transitions. [2021-11-03 04:17:47,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-03 04:17:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 15146 transitions. [2021-11-03 04:17:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:17:47,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:47,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:47,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:47,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:47,432 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1801085105, now seen corresponding path program 1 times [2021-11-03 04:17:47,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:47,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555675620] [2021-11-03 04:17:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:47,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:47,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:47,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:17:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:47,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:17:47,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:48,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:48,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:48,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555675620] [2021-11-03 04:17:48,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555675620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:48,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:48,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:17:48,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704276338] [2021-11-03 04:17:48,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:48,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:48,455 INFO L87 Difference]: Start difference. First operand 8266 states and 15146 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 04:17:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:49,430 INFO L93 Difference]: Finished difference Result 15523 states and 28345 transitions. [2021-11-03 04:17:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:17:49,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:17:49,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:49,452 INFO L225 Difference]: With dead ends: 15523 [2021-11-03 04:17:49,452 INFO L226 Difference]: Without dead ends: 10771 [2021-11-03 04:17:49,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-11-03 04:17:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 8252. [2021-11-03 04:17:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8252 states, 8247 states have (on average 1.8331514490117617) internal successors, (15118), 8251 states have internal predecessors, (15118), 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) [2021-11-03 04:17:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8252 states to 8252 states and 15118 transitions. [2021-11-03 04:17:49,980 INFO L78 Accepts]: Start accepts. Automaton has 8252 states and 15118 transitions. Word has length 71 [2021-11-03 04:17:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 8252 states and 15118 transitions. [2021-11-03 04:17:49,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-03 04:17:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8252 states and 15118 transitions. [2021-11-03 04:17:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:17:49,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:49,983 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:50,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:50,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:50,198 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1768785045, now seen corresponding path program 1 times [2021-11-03 04:17:50,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:50,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929397368] [2021-11-03 04:17:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:50,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:50,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:50,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:50,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:17:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:50,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:17:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:51,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:51,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:51,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929397368] [2021-11-03 04:17:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929397368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:51,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:51,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:17:51,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647064557] [2021-11-03 04:17:51,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:17:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:17:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:51,218 INFO L87 Difference]: Start difference. First operand 8252 states and 15118 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:52,357 INFO L93 Difference]: Finished difference Result 32374 states and 59651 transitions. [2021-11-03 04:17:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:17:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:17:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:52,400 INFO L225 Difference]: With dead ends: 32374 [2021-11-03 04:17:52,400 INFO L226 Difference]: Without dead ends: 27632 [2021-11-03 04:17:52,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:17:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27632 states. [2021-11-03 04:17:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27632 to 12715. [2021-11-03 04:17:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12715 states, 12710 states have (on average 1.8302124311565697) internal successors, (23262), 12714 states have internal predecessors, (23262), 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) [2021-11-03 04:17:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12715 states to 12715 states and 23262 transitions. [2021-11-03 04:17:53,222 INFO L78 Accepts]: Start accepts. Automaton has 12715 states and 23262 transitions. Word has length 73 [2021-11-03 04:17:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:53,222 INFO L470 AbstractCegarLoop]: Abstraction has 12715 states and 23262 transitions. [2021-11-03 04:17:53,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12715 states and 23262 transitions. [2021-11-03 04:17:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:17:53,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:53,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:53,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:17:53,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:53,439 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1891753177, now seen corresponding path program 1 times [2021-11-03 04:17:53,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:53,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50477406] [2021-11-03 04:17:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:53,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:53,441 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:53,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:17:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:54,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:17:54,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:54,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:54,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:54,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50477406] [2021-11-03 04:17:54,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50477406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:54,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:54,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:17:54,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246295879] [2021-11-03 04:17:54,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:54,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:54,566 INFO L87 Difference]: Start difference. First operand 12715 states and 23262 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 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) [2021-11-03 04:17:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:58,344 INFO L93 Difference]: Finished difference Result 68684 states and 126583 transitions. [2021-11-03 04:17:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:17:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 04:17:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:58,448 INFO L225 Difference]: With dead ends: 68684 [2021-11-03 04:17:58,448 INFO L226 Difference]: Without dead ends: 59479 [2021-11-03 04:17:58,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59479 states. [2021-11-03 04:17:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59479 to 20371. [2021-11-03 04:17:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20371 states, 20366 states have (on average 1.8381125405086909) internal successors, (37435), 20370 states have internal predecessors, (37435), 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) [2021-11-03 04:17:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20371 states to 20371 states and 37435 transitions. [2021-11-03 04:17:59,753 INFO L78 Accepts]: Start accepts. Automaton has 20371 states and 37435 transitions. Word has length 75 [2021-11-03 04:17:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:59,754 INFO L470 AbstractCegarLoop]: Abstraction has 20371 states and 37435 transitions. [2021-11-03 04:17:59,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 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) [2021-11-03 04:17:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 20371 states and 37435 transitions. [2021-11-03 04:17:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:17:59,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:59,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:59,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:59,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:59,982 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:59,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:59,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2025320236, now seen corresponding path program 1 times [2021-11-03 04:17:59,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:59,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297476400] [2021-11-03 04:17:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:59,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:59,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:59,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:59,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:18:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:00,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:18:00,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:00,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:01,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:01,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297476400] [2021-11-03 04:18:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297476400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:01,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:01,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:18:01,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761174819] [2021-11-03 04:18:01,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:18:01,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:18:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:18:01,040 INFO L87 Difference]: Start difference. First operand 20371 states and 37435 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2021-11-03 04:18:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:02,072 INFO L93 Difference]: Finished difference Result 37364 states and 68556 transitions. [2021-11-03 04:18:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:18:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 82 [2021-11-03 04:18:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:02,095 INFO L225 Difference]: With dead ends: 37364 [2021-11-03 04:18:02,095 INFO L226 Difference]: Without dead ends: 20386 [2021-11-03 04:18:02,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:18:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20386 states. [2021-11-03 04:18:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20386 to 20371. [2021-11-03 04:18:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20371 states, 20366 states have (on average 1.8311401355199843) internal successors, (37293), 20370 states have internal predecessors, (37293), 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) [2021-11-03 04:18:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20371 states to 20371 states and 37293 transitions. [2021-11-03 04:18:03,211 INFO L78 Accepts]: Start accepts. Automaton has 20371 states and 37293 transitions. Word has length 82 [2021-11-03 04:18:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 20371 states and 37293 transitions. [2021-11-03 04:18:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2021-11-03 04:18:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20371 states and 37293 transitions. [2021-11-03 04:18:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 04:18:03,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:03,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:03,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:03,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:03,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:18:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -667437268, now seen corresponding path program 1 times [2021-11-03 04:18:03,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:03,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135462361] [2021-11-03 04:18:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:03,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:03,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:03,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:03,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:18:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:04,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:18:04,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:04,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:04,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:04,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135462361] [2021-11-03 04:18:04,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135462361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:04,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:04,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:18:04,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127312224] [2021-11-03 04:18:04,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:18:04,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:18:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:18:04,780 INFO L87 Difference]: Start difference. First operand 20371 states and 37293 transitions. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 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) [2021-11-03 04:18:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:15,945 INFO L93 Difference]: Finished difference Result 123380 states and 224337 transitions. [2021-11-03 04:18:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:18:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 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 83 [2021-11-03 04:18:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:16,114 INFO L225 Difference]: With dead ends: 123380 [2021-11-03 04:18:16,115 INFO L226 Difference]: Without dead ends: 104627 [2021-11-03 04:18:16,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 04:18:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104627 states. [2021-11-03 04:18:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104627 to 44515. [2021-11-03 04:18:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44515 states, 44510 states have (on average 1.8305998651988318) internal successors, (81480), 44514 states have internal predecessors, (81480), 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) [2021-11-03 04:18:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44515 states to 44515 states and 81480 transitions. [2021-11-03 04:18:19,343 INFO L78 Accepts]: Start accepts. Automaton has 44515 states and 81480 transitions. Word has length 83 [2021-11-03 04:18:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:19,343 INFO L470 AbstractCegarLoop]: Abstraction has 44515 states and 81480 transitions. [2021-11-03 04:18:19,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 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) [2021-11-03 04:18:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 44515 states and 81480 transitions. [2021-11-03 04:18:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:18:19,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:19,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:19,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-03 04:18:19,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:19,547 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:18:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash 404346501, now seen corresponding path program 1 times [2021-11-03 04:18:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:19,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210280071] [2021-11-03 04:18:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:19,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:19,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:19,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:19,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:18:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:20,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:18:20,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:20,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:20,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:20,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210280071] [2021-11-03 04:18:20,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210280071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:20,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:20,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:18:20,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442696756] [2021-11-03 04:18:20,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:18:20,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:18:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:18:20,810 INFO L87 Difference]: Start difference. First operand 44515 states and 81480 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-03 04:18:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:25,506 INFO L93 Difference]: Finished difference Result 131295 states and 240453 transitions. [2021-11-03 04:18:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:18:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-03 04:18:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:25,629 INFO L225 Difference]: With dead ends: 131295 [2021-11-03 04:18:25,629 INFO L226 Difference]: Without dead ends: 88462 [2021-11-03 04:18:25,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:18:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88462 states. [2021-11-03 04:18:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88462 to 88460. [2021-11-03 04:18:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88460 states, 88455 states have (on average 1.8315640721270703) internal successors, (162011), 88459 states have internal predecessors, (162011), 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) [2021-11-03 04:18:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88460 states to 88460 states and 162011 transitions. [2021-11-03 04:18:30,786 INFO L78 Accepts]: Start accepts. Automaton has 88460 states and 162011 transitions. Word has length 84 [2021-11-03 04:18:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:30,786 INFO L470 AbstractCegarLoop]: Abstraction has 88460 states and 162011 transitions. [2021-11-03 04:18:30,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-03 04:18:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 88460 states and 162011 transitions. [2021-11-03 04:18:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:18:30,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:30,789 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:30,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:30,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:30,990 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:18:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1217111043, now seen corresponding path program 1 times [2021-11-03 04:18:30,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:30,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129918506] [2021-11-03 04:18:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:30,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:30,992 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:31,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb65b26-ab63-4d45-9f77-6e944ed645de/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:18:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:32,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:18:32,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:32,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:32,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:32,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129918506] [2021-11-03 04:18:32,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129918506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:32,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:32,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:18:32,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371730550] [2021-11-03 04:18:32,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:18:32,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:32,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:18:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:18:32,566 INFO L87 Difference]: Start difference. First operand 88460 states and 162011 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 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)