./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.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_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/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_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/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_86fff298-d89f-4cc8-a310-6675567bf273/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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:27,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:27,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:27,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:27,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:27,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:27,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:27,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:27,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:27,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:27,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:27,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:27,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:27,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:27,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:27,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:27,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:27,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:27,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:27,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:27,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:27,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:27,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:27,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:27,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:27,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:27,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:27,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:27,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:27,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:27,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:27,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:27,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:27,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:27,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:27,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:27,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:27,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:27,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:27,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:27,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:27,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:39:27,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:27,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:27,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:27,991 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:27,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:27,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:27,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:39:27,992 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:27,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:27,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:39:27,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:39:27,998 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:27,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:39:27,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:39:28,000 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:39:28,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:28,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:39:28,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:39:28,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:39:28,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:28,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:39:28,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:28,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:39:28,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:28,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:39:28,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:39:28,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:28,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:39:28,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:28,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:28,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:28,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:28,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:28,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:39:28,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:39:28,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:39:28,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:39:28,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:28,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:28,010 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_86fff298-d89f-4cc8-a310-6675567bf273/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2021-11-03 04:39:28,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:28,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:28,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:28,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:28,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:28,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-03 04:39:28,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/dcf8d1530/5d231b5097b44850b993426bc2f8f5b8/FLAG7d535f1b9 [2021-11-03 04:39:29,017 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:29,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-03 04:39:29,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/dcf8d1530/5d231b5097b44850b993426bc2f8f5b8/FLAG7d535f1b9 [2021-11-03 04:39:29,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/dcf8d1530/5d231b5097b44850b993426bc2f8f5b8 [2021-11-03 04:39:29,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:29,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:29,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:29,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:29,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:29,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:29" (1/1) ... [2021-11-03 04:39:29,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d30e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:29, skipping insertion in model container [2021-11-03 04:39:29,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:29" (1/1) ... [2021-11-03 04:39:29,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:29,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:29,836 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_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-03 04:39:29,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:29,977 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 04:39:29,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@477d529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:29, skipping insertion in model container [2021-11-03 04:39:29,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:29,979 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:39:29,981 INFO L168 Benchmark]: Toolchain (without parser) took 604.59 ms. Allocated memory is still 90.2 MB. Free memory was 52.4 MB in the beginning and 53.2 MB in the end (delta: -798.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:29,983 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:39:29,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.10 ms. Allocated memory is still 90.2 MB. Free memory was 52.2 MB in the beginning and 53.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:29,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 602.10 ms. Allocated memory is still 90.2 MB. Free memory was 52.2 MB in the beginning and 53.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1506]: 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_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/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_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/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_86fff298-d89f-4cc8-a310-6675567bf273/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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:32,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:32,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:32,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:32,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:32,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:32,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:32,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:32,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:32,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:32,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:32,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:32,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:32,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:32,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:32,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:32,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:32,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:32,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:32,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:32,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:32,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:32,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:32,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:32,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:32,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:32,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:32,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:32,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:32,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:32,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:32,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:32,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:32,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:32,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:32,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:32,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:32,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:32,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:32,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:32,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:32,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:39:32,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:32,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:32,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:32,476 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:32,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:32,477 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:32,477 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:32,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:32,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:32,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:32,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:39:32,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:39:32,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:32,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:39:32,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:32,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:39:32,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:32,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:39:32,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:39:32,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:39:32,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:39:32,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:32,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:39:32,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:32,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:39:32,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:32,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:32,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:32,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:32,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:39:32,485 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:39:32,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:32,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:39:32,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:32,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:32,486 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_86fff298-d89f-4cc8-a310-6675567bf273/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2021-11-03 04:39:32,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:32,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:32,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:32,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:32,895 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:32,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-03 04:39:32,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/1080bc706/7d3d8236fb0d4de78f1392dc61aa7d05/FLAGe95f5bfa6 [2021-11-03 04:39:33,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:33,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2021-11-03 04:39:33,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/1080bc706/7d3d8236fb0d4de78f1392dc61aa7d05/FLAGe95f5bfa6 [2021-11-03 04:39:33,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/data/1080bc706/7d3d8236fb0d4de78f1392dc61aa7d05 [2021-11-03 04:39:33,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:33,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:33,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:33,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:33,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:33,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd92db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:33, skipping insertion in model container [2021-11-03 04:39:33,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:33" (1/1) ... [2021-11-03 04:39:33,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:34,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:34,425 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_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-03 04:39:34,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:34,591 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:39:34,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:34,741 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_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-03 04:39:34,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:34,827 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:39:34,914 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_86fff298-d89f-4cc8-a310-6675567bf273/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2021-11-03 04:39:34,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:35,001 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:39:35,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35 WrapperNode [2021-11-03 04:39:35,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:35,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:35,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:39:35,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:39:35,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:35,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:39:35,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:39:35,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:39:35,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:35,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:36,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:39:36,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:39:36,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:39:36,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:39:36,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (1/1) ... [2021-11-03 04:39:36,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:36,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:36,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:39:36,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:39:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:39:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:39:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:39:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:39:49,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:49,635 INFO L299 CfgBuilder]: Removed 1107 assume(true) statements. [2021-11-03 04:39:49,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:49 BoogieIcfgContainer [2021-11-03 04:39:49,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:49,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:49,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:49,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:49,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:39:33" (1/3) ... [2021-11-03 04:39:49,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e8ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:49, skipping insertion in model container [2021-11-03 04:39:49,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:35" (2/3) ... [2021-11-03 04:39:49,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e8ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:49, skipping insertion in model container [2021-11-03 04:39:49,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:49" (3/3) ... [2021-11-03 04:39:49,654 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2021-11-03 04:39:49,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:49,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:39:49,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:49,776 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 04:39:49,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:39:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 5593 states, 5582 states have (on average 1.9061268362594053) internal successors, (10640), 5592 states have internal predecessors, (10640), 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 04:39:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:39:49,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:49,941 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] [2021-11-03 04:39:49,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash 447399383, now seen corresponding path program 1 times [2021-11-03 04:39:49,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:49,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499151005] [2021-11-03 04:39:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:49,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:49,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:49,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:50,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:39:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:50,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:39:50,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:50,610 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 04:39:50,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:50,759 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 04:39:50,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:50,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499151005] [2021-11-03 04:39:50,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499151005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:50,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:50,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:39:50,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132936452] [2021-11-03 04:39:50,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:39:50,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:39:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:39:50,808 INFO L87 Difference]: Start difference. First operand has 5593 states, 5582 states have (on average 1.9061268362594053) internal successors, (10640), 5592 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 04:39:53,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:53,515 INFO L93 Difference]: Finished difference Result 38773 states and 73761 transitions. [2021-11-03 04:39:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:39:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 41 [2021-11-03 04:39:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:53,759 INFO L225 Difference]: With dead ends: 38773 [2021-11-03 04:39:53,759 INFO L226 Difference]: Without dead ends: 33181 [2021-11-03 04:39:53,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:39:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33181 states. [2021-11-03 04:39:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33181 to 5605. [2021-11-03 04:39:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5605 states, 5595 states have (on average 1.9011617515638963) internal successors, (10637), 5604 states have internal predecessors, (10637), 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 04:39:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 10637 transitions. [2021-11-03 04:39:54,293 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 10637 transitions. Word has length 41 [2021-11-03 04:39:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:54,294 INFO L470 AbstractCegarLoop]: Abstraction has 5605 states and 10637 transitions. [2021-11-03 04:39:54,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 04:39:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 10637 transitions. [2021-11-03 04:39:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:39:54,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:54,305 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] [2021-11-03 04:39:54,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:54,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:54,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 483426753, now seen corresponding path program 1 times [2021-11-03 04:39:54,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:54,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313862991] [2021-11-03 04:39:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:54,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:54,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:54,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:39:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:55,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:55,213 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 04:39:55,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:55,325 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 04:39:55,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:55,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313862991] [2021-11-03 04:39:55,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313862991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:55,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:55,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:39:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219691053] [2021-11-03 04:39:55,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:55,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:55,330 INFO L87 Difference]: Start difference. First operand 5605 states and 10637 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:55,564 INFO L93 Difference]: Finished difference Result 11122 states and 21117 transitions. [2021-11-03 04:39:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-03 04:39:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:55,582 INFO L225 Difference]: With dead ends: 11122 [2021-11-03 04:39:55,582 INFO L226 Difference]: Without dead ends: 5531 [2021-11-03 04:39:55,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 04:39:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-11-03 04:39:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2021-11-03 04:39:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5521 states have (on average 1.9005614924832457) internal successors, (10493), 5530 states have internal predecessors, (10493), 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 04:39:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10493 transitions. [2021-11-03 04:39:55,798 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10493 transitions. Word has length 43 [2021-11-03 04:39:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:55,799 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 10493 transitions. [2021-11-03 04:39:55,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10493 transitions. [2021-11-03 04:39:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:39:55,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:55,802 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] [2021-11-03 04:39:55,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:56,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:56,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1460966817, now seen corresponding path program 1 times [2021-11-03 04:39:56,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:56,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492605936] [2021-11-03 04:39:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:56,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:56,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:56,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:39:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:56,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:39:56,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:56,561 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 04:39:56,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:56,734 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 04:39:56,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:56,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492605936] [2021-11-03 04:39:56,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492605936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:56,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:56,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:39:56,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669528040] [2021-11-03 04:39:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:39:56,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:39:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:39:56,738 INFO L87 Difference]: Start difference. First operand 5531 states and 10493 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:57,300 INFO L93 Difference]: Finished difference Result 11036 states and 20949 transitions. [2021-11-03 04:39:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:39:57,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 04:39:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:57,314 INFO L225 Difference]: With dead ends: 11036 [2021-11-03 04:39:57,314 INFO L226 Difference]: Without dead ends: 5531 [2021-11-03 04:39:57,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:39:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-11-03 04:39:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2021-11-03 04:39:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5521 states have (on average 1.8987502264082594) internal successors, (10483), 5530 states have internal predecessors, (10483), 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 04:39:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10483 transitions. [2021-11-03 04:39:57,541 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10483 transitions. Word has length 45 [2021-11-03 04:39:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:57,542 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 10483 transitions. [2021-11-03 04:39:57,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10483 transitions. [2021-11-03 04:39:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:39:57,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:57,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:57,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:57,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:57,761 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2096276311, now seen corresponding path program 1 times [2021-11-03 04:39:57,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:57,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723324292] [2021-11-03 04:39:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:57,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:57,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:57,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:39:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:58,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:58,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:58,312 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 04:39:58,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:58,480 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 04:39:58,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:58,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723324292] [2021-11-03 04:39:58,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723324292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:58,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:58,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:39:58,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653029141] [2021-11-03 04:39:58,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:39:58,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:39:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:39:58,482 INFO L87 Difference]: Start difference. First operand 5531 states and 10483 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 04:40:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:03,616 INFO L93 Difference]: Finished difference Result 24872 states and 46719 transitions. [2021-11-03 04:40:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:40:03,616 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 49 [2021-11-03 04:40:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:03,665 INFO L225 Difference]: With dead ends: 24872 [2021-11-03 04:40:03,666 INFO L226 Difference]: Without dead ends: 19411 [2021-11-03 04:40:03,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:40:03,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19411 states. [2021-11-03 04:40:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19411 to 9691. [2021-11-03 04:40:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 9681 states have (on average 1.898977378370003) internal successors, (18384), 9690 states have internal predecessors, (18384), 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 04:40:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 18384 transitions. [2021-11-03 04:40:04,229 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 18384 transitions. Word has length 49 [2021-11-03 04:40:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:04,230 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 18384 transitions. [2021-11-03 04:40:04,231 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 04:40:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 18384 transitions. [2021-11-03 04:40:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:40:04,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:04,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:04,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:04,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2016675758, now seen corresponding path program 1 times [2021-11-03 04:40:04,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:04,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743018868] [2021-11-03 04:40:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:04,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:04,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:04,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:40:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:04,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:04,990 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 04:40:04,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:05,141 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 04:40:05,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:05,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743018868] [2021-11-03 04:40:05,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743018868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:05,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:05,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:40:05,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52291485] [2021-11-03 04:40:05,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:40:05,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:40:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:05,146 INFO L87 Difference]: Start difference. First operand 9691 states and 18384 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:08,849 INFO L93 Difference]: Finished difference Result 80460 states and 152801 transitions. [2021-11-03 04:40:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:40:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 04:40:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:09,043 INFO L225 Difference]: With dead ends: 80460 [2021-11-03 04:40:09,044 INFO L226 Difference]: Without dead ends: 70839 [2021-11-03 04:40:09,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 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 04:40:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2021-11-03 04:40:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 18235. [2021-11-03 04:40:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18235 states, 18225 states have (on average 1.8973936899862827) internal successors, (34580), 18234 states have internal predecessors, (34580), 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 04:40:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18235 states to 18235 states and 34580 transitions. [2021-11-03 04:40:10,248 INFO L78 Accepts]: Start accepts. Automaton has 18235 states and 34580 transitions. Word has length 49 [2021-11-03 04:40:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:10,249 INFO L470 AbstractCegarLoop]: Abstraction has 18235 states and 34580 transitions. [2021-11-03 04:40:10,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 18235 states and 34580 transitions. [2021-11-03 04:40:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:40:10,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:10,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:10,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:10,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1936380238, now seen corresponding path program 1 times [2021-11-03 04:40:10,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:10,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790084290] [2021-11-03 04:40:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:10,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:10,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:10,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:10,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:40:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:10,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:11,049 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 04:40:11,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:11,147 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 04:40:11,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:11,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790084290] [2021-11-03 04:40:11,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790084290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:11,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:11,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:11,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552373179] [2021-11-03 04:40:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:11,150 INFO L87 Difference]: Start difference. First operand 18235 states and 34580 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:12,585 INFO L93 Difference]: Finished difference Result 53785 states and 102026 transitions. [2021-11-03 04:40:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 04:40:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:12,661 INFO L225 Difference]: With dead ends: 53785 [2021-11-03 04:40:12,661 INFO L226 Difference]: Without dead ends: 35582 [2021-11-03 04:40:12,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35582 states. [2021-11-03 04:40:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35582 to 18111. [2021-11-03 04:40:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18111 states, 18101 states have (on average 1.8966907905640573) internal successors, (34332), 18110 states have internal predecessors, (34332), 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 04:40:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 34332 transitions. [2021-11-03 04:40:13,627 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 34332 transitions. Word has length 50 [2021-11-03 04:40:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:13,628 INFO L470 AbstractCegarLoop]: Abstraction has 18111 states and 34332 transitions. [2021-11-03 04:40:13,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 34332 transitions. [2021-11-03 04:40:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:40:13,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:13,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:13,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:40:13,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:13,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1537728245, now seen corresponding path program 1 times [2021-11-03 04:40:13,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:13,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760111322] [2021-11-03 04:40:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:13,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:13,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:13,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:40:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:14,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:40:14,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:14,438 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 04:40:14,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:14,619 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 04:40:14,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:14,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760111322] [2021-11-03 04:40:14,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760111322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:14,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:14,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:40:14,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341528241] [2021-11-03 04:40:14,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:40:14,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:40:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:40:14,621 INFO L87 Difference]: Start difference. First operand 18111 states and 34332 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 04:40:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:23,711 INFO L93 Difference]: Finished difference Result 68526 states and 129630 transitions. [2021-11-03 04:40:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:40:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 50 [2021-11-03 04:40:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:23,791 INFO L225 Difference]: With dead ends: 68526 [2021-11-03 04:40:23,791 INFO L226 Difference]: Without dead ends: 50449 [2021-11-03 04:40:23,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:40:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50449 states. [2021-11-03 04:40:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50449 to 34959. [2021-11-03 04:40:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34959 states, 34949 states have (on average 1.8783942315946094) internal successors, (65648), 34958 states have internal predecessors, (65648), 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 04:40:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34959 states to 34959 states and 65648 transitions. [2021-11-03 04:40:25,198 INFO L78 Accepts]: Start accepts. Automaton has 34959 states and 65648 transitions. Word has length 50 [2021-11-03 04:40:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:25,199 INFO L470 AbstractCegarLoop]: Abstraction has 34959 states and 65648 transitions. [2021-11-03 04:40:25,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 04:40:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 34959 states and 65648 transitions. [2021-11-03 04:40:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:40:25,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:25,201 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] [2021-11-03 04:40:25,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:25,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:25,407 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:25,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1088525188, now seen corresponding path program 1 times [2021-11-03 04:40:25,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:25,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381092099] [2021-11-03 04:40:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:25,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:25,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:25,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:25,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:40:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:25,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:25,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:26,002 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 04:40:26,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:26,116 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 04:40:26,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:26,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381092099] [2021-11-03 04:40:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381092099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:26,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:26,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:26,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099675759] [2021-11-03 04:40:26,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:26,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:26,119 INFO L87 Difference]: Start difference. First operand 34959 states and 65648 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 04:40:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:29,409 INFO L93 Difference]: Finished difference Result 136885 states and 257225 transitions. [2021-11-03 04:40:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:29,410 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 54 [2021-11-03 04:40:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:29,579 INFO L225 Difference]: With dead ends: 136885 [2021-11-03 04:40:29,579 INFO L226 Difference]: Without dead ends: 101963 [2021-11-03 04:40:29,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 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 04:40:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101963 states. [2021-11-03 04:40:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101963 to 34845. [2021-11-03 04:40:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34845 states, 34835 states have (on average 1.8721975025118416) internal successors, (65218), 34844 states have internal predecessors, (65218), 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 04:40:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34845 states to 34845 states and 65218 transitions. [2021-11-03 04:40:31,275 INFO L78 Accepts]: Start accepts. Automaton has 34845 states and 65218 transitions. Word has length 54 [2021-11-03 04:40:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:31,276 INFO L470 AbstractCegarLoop]: Abstraction has 34845 states and 65218 transitions. [2021-11-03 04:40:31,276 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 04:40:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 34845 states and 65218 transitions. [2021-11-03 04:40:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:40:31,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:31,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:31,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:31,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:31,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash 211070977, now seen corresponding path program 1 times [2021-11-03 04:40:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:31,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703350159] [2021-11-03 04:40:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:31,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:31,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:31,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:40:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:31,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:31,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:32,090 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 04:40:32,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:32,258 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 04:40:32,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:32,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703350159] [2021-11-03 04:40:32,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703350159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:32,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:32,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:40:32,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286078621] [2021-11-03 04:40:32,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:40:32,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:40:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:32,260 INFO L87 Difference]: Start difference. First operand 34845 states and 65218 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:40,600 INFO L93 Difference]: Finished difference Result 284943 states and 535245 transitions. [2021-11-03 04:40:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:40:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 04:40:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:41,297 INFO L225 Difference]: With dead ends: 284943 [2021-11-03 04:40:41,297 INFO L226 Difference]: Without dead ends: 250154 [2021-11-03 04:40:41,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:40:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250154 states. [2021-11-03 04:40:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250154 to 66833. [2021-11-03 04:40:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66833 states, 66823 states have (on average 1.8722146566302023) internal successors, (125107), 66832 states have internal predecessors, (125107), 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 04:40:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66833 states to 66833 states and 125107 transitions. [2021-11-03 04:40:44,891 INFO L78 Accepts]: Start accepts. Automaton has 66833 states and 125107 transitions. Word has length 55 [2021-11-03 04:40:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 66833 states and 125107 transitions. [2021-11-03 04:40:44,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 66833 states and 125107 transitions. [2021-11-03 04:40:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:40:44,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:44,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:44,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:45,093 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:40:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1453398781, now seen corresponding path program 1 times [2021-11-03 04:40:45,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:45,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879655665] [2021-11-03 04:40:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:45,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:45,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:45,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fff298-d89f-4cc8-a310-6675567bf273/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:40:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:45,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:45,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:45,649 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 04:40:45,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:45,784 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 04:40:45,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:45,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879655665] [2021-11-03 04:40:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879655665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:45,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:45,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103070274] [2021-11-03 04:40:45,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:45,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:45,786 INFO L87 Difference]: Start difference. First operand 66833 states and 125107 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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)