./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.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_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/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_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/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_c9520331-e7b5-4788-aca2-450f1bd153f1/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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:12:09,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:12:09,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:12:09,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:12:09,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:12:09,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:12:09,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:12:09,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:12:09,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:12:09,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:12:09,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:12:09,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:12:09,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:12:09,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:12:09,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:12:09,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:12:09,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:12:09,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:12:09,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:12:09,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:12:09,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:12:09,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:12:09,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:12:09,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:12:09,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:12:09,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:12:09,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:12:09,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:12:09,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:12:09,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:12:09,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:12:09,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:12:09,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:12:09,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:12:09,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:12:09,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:12:09,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:12:09,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:12:09,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:12:09,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:12:09,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:12:09,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:12:10,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:12:10,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:12:10,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:12:10,031 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:12:10,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:12:10,031 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:12:10,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:12:10,032 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:12:10,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:12:10,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:12:10,041 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:12:10,042 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:12:10,042 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:12:10,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:12:10,042 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:12:10,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:12:10,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:12:10,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:12:10,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:12:10,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:12:10,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:12:10,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:12:10,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:12:10,046 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:12:10,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:12:10,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:12:10,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:12:10,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:12:10,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:12:10,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:12:10,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:12:10,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:12:10,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:12:10,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:12:10,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:12:10,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:12:10,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:12:10,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:12:10,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:12:10,052 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_c9520331-e7b5-4788-aca2-450f1bd153f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-11-03 04:12:10,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:12:10,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:12:10,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:12:10,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:12:10,385 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:12:10,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-03 04:12:10,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/274689a15/338c18b869654b4e8604a3978ad90f97/FLAG44b366a09 [2021-11-03 04:12:11,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:12:11,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-03 04:12:11,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/274689a15/338c18b869654b4e8604a3978ad90f97/FLAG44b366a09 [2021-11-03 04:12:11,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/274689a15/338c18b869654b4e8604a3978ad90f97 [2021-11-03 04:12:11,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:12:11,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:12:11,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:11,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:12:11,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:12:11,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:11" (1/1) ... [2021-11-03 04:12:11,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fdae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:11, skipping insertion in model container [2021-11-03 04:12:11,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:11" (1/1) ... [2021-11-03 04:12:11,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:12:11,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:12:11,905 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_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-03 04:12:12,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:12:12,209 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 04:12:12,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f8f2f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:12, skipping insertion in model container [2021-11-03 04:12:12,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:12,210 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:12:12,213 INFO L168 Benchmark]: Toolchain (without parser) took 818.89 ms. Allocated memory is still 104.9 MB. Free memory was 69.3 MB in the beginning and 69.5 MB in the end (delta: -168.4 kB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:12:12,214 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 42.6 MB in the beginning and 42.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:12:12,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.75 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 69.5 MB in the end (delta: -384.2 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:12:12,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 42.6 MB in the beginning and 42.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 815.75 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 69.5 MB in the end (delta: -384.2 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3005]: 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_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/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_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/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_c9520331-e7b5-4788-aca2-450f1bd153f1/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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:12:14,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:12:14,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:12:14,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:12:14,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:12:14,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:12:14,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:12:14,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:12:14,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:12:14,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:12:14,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:12:14,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:12:14,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:12:14,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:12:14,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:12:14,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:12:14,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:12:14,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:12:14,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:12:14,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:12:14,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:12:14,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:12:14,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:12:14,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:12:14,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:12:14,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:12:14,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:12:14,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:12:14,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:12:14,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:12:14,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:12:14,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:12:14,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:12:14,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:12:14,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:12:14,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:12:14,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:12:14,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:12:14,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:12:14,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:12:14,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:12:14,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:12:14,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:12:14,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:12:14,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:12:14,780 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:12:14,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:12:14,781 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:12:14,781 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:12:14,781 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:12:14,781 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:12:14,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:12:14,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:12:14,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:12:14,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:12:14,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:12:14,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:12:14,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:12:14,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:12:14,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:12:14,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:12:14,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:12:14,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:12:14,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:12:14,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:12:14,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:12:14,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:12:14,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:12:14,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:12:14,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:12:14,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:12:14,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:12:14,791 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:12:14,791 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:12:14,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:12:14,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:12:14,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:12:14,793 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_c9520331-e7b5-4788-aca2-450f1bd153f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-11-03 04:12:15,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:12:15,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:12:15,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:12:15,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:12:15,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:12:15,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-03 04:12:15,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/713a3cf6d/a17de0c545c0457289a01c20f8b79111/FLAGcdc5927f0 [2021-11-03 04:12:16,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:12:16,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-03 04:12:16,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/713a3cf6d/a17de0c545c0457289a01c20f8b79111/FLAGcdc5927f0 [2021-11-03 04:12:16,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/data/713a3cf6d/a17de0c545c0457289a01c20f8b79111 [2021-11-03 04:12:16,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:12:16,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:12:16,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:16,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:12:16,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:12:16,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:16" (1/1) ... [2021-11-03 04:12:16,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605b334a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:16, skipping insertion in model container [2021-11-03 04:12:16,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:16" (1/1) ... [2021-11-03 04:12:16,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:12:16,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:12:16,698 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_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-03 04:12:16,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:12:17,010 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:12:17,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:12:17,086 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_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-03 04:12:17,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:12:17,231 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:12:17,282 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_c9520331-e7b5-4788-aca2-450f1bd153f1/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-03 04:12:17,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:12:17,404 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:12:17,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17 WrapperNode [2021-11-03 04:12:17,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:17,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:12:17,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:12:17,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:12:17,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:17,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:17,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:12:17,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:12:17,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:12:17,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:12:17,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:17,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:17,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:17,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:18,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:18,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:18,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:18,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:12:18,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:12:18,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:12:18,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:12:18,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (1/1) ... [2021-11-03 04:12:18,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:12:18,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:12:18,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:12:18,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:12:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:12:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:12:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:12:18,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:12:33,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:12:33,937 INFO L299 CfgBuilder]: Removed 1227 assume(true) statements. [2021-11-03 04:12:33,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:12:33 BoogieIcfgContainer [2021-11-03 04:12:33,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:12:33,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:12:33,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:12:33,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:12:33,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:12:16" (1/3) ... [2021-11-03 04:12:33,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2613ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:12:33, skipping insertion in model container [2021-11-03 04:12:33,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:17" (2/3) ... [2021-11-03 04:12:33,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2613ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:12:33, skipping insertion in model container [2021-11-03 04:12:33,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:12:33" (3/3) ... [2021-11-03 04:12:33,958 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2021-11-03 04:12:33,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:12:33,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:12:34,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:12:34,046 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 04:12:34,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:12:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 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 04:12:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:12:34,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:34,171 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 04:12:34,172 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 04:12:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash 658093255, now seen corresponding path program 1 times [2021-11-03 04:12:34,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:34,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910621537] [2021-11-03 04:12:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:34,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:34,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:34,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:12:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:34,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:12:34,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:34,763 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 04:12:34,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:34,928 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 04:12:34,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:34,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910621537] [2021-11-03 04:12:34,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910621537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:34,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:34,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:12:34,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817307938] [2021-11-03 04:12:34,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:12:34,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:12:34,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:12:34,977 INFO L87 Difference]: Start difference. First operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 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 04:12:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:37,928 INFO L93 Difference]: Finished difference Result 40663 states and 77121 transitions. [2021-11-03 04:12:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:12:37,930 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 04:12:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:38,197 INFO L225 Difference]: With dead ends: 40663 [2021-11-03 04:12:38,197 INFO L226 Difference]: Without dead ends: 34801 [2021-11-03 04:12:38,226 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 04:12:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34801 states. [2021-11-03 04:12:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34801 to 5875. [2021-11-03 04:12:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 5865 states have (on average 1.8954816709292412) internal successors, (11117), 5874 states have internal predecessors, (11117), 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 04:12:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 11117 transitions. [2021-11-03 04:12:38,900 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 11117 transitions. Word has length 41 [2021-11-03 04:12:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:38,902 INFO L470 AbstractCegarLoop]: Abstraction has 5875 states and 11117 transitions. [2021-11-03 04:12:38,902 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 04:12:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 11117 transitions. [2021-11-03 04:12:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:12:38,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:38,912 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 04:12:38,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:39,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:39,129 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 04:12:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 694120625, now seen corresponding path program 1 times [2021-11-03 04:12:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:39,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208217629] [2021-11-03 04:12:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:39,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:39,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:39,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:39,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:12:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:12:39,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:39,637 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 04:12:39,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:39,775 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 04:12:39,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:39,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208217629] [2021-11-03 04:12:39,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208217629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:39,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:39,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:12:39,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644244997] [2021-11-03 04:12:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:12:39,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:12:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:12:39,784 INFO L87 Difference]: Start difference. First operand 5875 states and 11117 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 04:12:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:39,996 INFO L93 Difference]: Finished difference Result 11662 states and 22077 transitions. [2021-11-03 04:12:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:12:39,997 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 04:12:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:40,015 INFO L225 Difference]: With dead ends: 11662 [2021-11-03 04:12:40,015 INFO L226 Difference]: Without dead ends: 5801 [2021-11-03 04:12:40,025 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 04:12:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-03 04:12:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-03 04:12:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8948368157485753) internal successors, (10973), 5800 states have internal predecessors, (10973), 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 04:12:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10973 transitions. [2021-11-03 04:12:40,257 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10973 transitions. Word has length 43 [2021-11-03 04:12:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:40,259 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10973 transitions. [2021-11-03 04:12:40,260 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 04:12:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10973 transitions. [2021-11-03 04:12:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:12:40,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:40,270 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 04:12:40,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:40,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:40,485 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 04:12:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1250272945, now seen corresponding path program 1 times [2021-11-03 04:12:40,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:40,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479334816] [2021-11-03 04:12:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:40,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:40,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:40,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:12:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:40,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:12:40,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:41,022 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 04:12:41,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:41,188 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 04:12:41,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:41,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479334816] [2021-11-03 04:12:41,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479334816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:41,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:41,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:12:41,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946198971] [2021-11-03 04:12:41,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:12:41,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:41,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:12:41,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:12:41,191 INFO L87 Difference]: Start difference. First operand 5801 states and 10973 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 04:12:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:41,729 INFO L93 Difference]: Finished difference Result 11576 states and 21909 transitions. [2021-11-03 04:12:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:12:41,730 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 04:12:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:41,748 INFO L225 Difference]: With dead ends: 11576 [2021-11-03 04:12:41,748 INFO L226 Difference]: Without dead ends: 5801 [2021-11-03 04:12:41,759 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 04:12:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-03 04:12:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-03 04:12:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8931099982731825) internal successors, (10963), 5800 states have internal predecessors, (10963), 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 04:12:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10963 transitions. [2021-11-03 04:12:41,985 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10963 transitions. Word has length 45 [2021-11-03 04:12:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:41,985 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10963 transitions. [2021-11-03 04:12:41,986 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 04:12:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10963 transitions. [2021-11-03 04:12:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:12:41,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:41,989 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 04:12:42,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:42,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:42,208 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 04:12:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1885582439, now seen corresponding path program 1 times [2021-11-03 04:12:42,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:42,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122038846] [2021-11-03 04:12:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:42,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:42,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:42,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:42,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:12:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:42,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:12:42,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:42,845 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 04:12:42,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:43,024 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 04:12:43,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:43,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122038846] [2021-11-03 04:12:43,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122038846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:43,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:43,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:12:43,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021787313] [2021-11-03 04:12:43,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:12:43,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:12:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:12:43,026 INFO L87 Difference]: Start difference. First operand 5801 states and 10963 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 04:12:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:48,581 INFO L93 Difference]: Finished difference Result 26060 states and 48831 transitions. [2021-11-03 04:12:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:12:48,582 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 04:12:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:48,663 INFO L225 Difference]: With dead ends: 26060 [2021-11-03 04:12:48,663 INFO L226 Difference]: Without dead ends: 20329 [2021-11-03 04:12:48,678 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 04:12:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20329 states. [2021-11-03 04:12:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20329 to 10177. [2021-11-03 04:12:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10177 states, 10167 states have (on average 1.8931838300383594) internal successors, (19248), 10176 states have internal predecessors, (19248), 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 04:12:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10177 states to 10177 states and 19248 transitions. [2021-11-03 04:12:49,213 INFO L78 Accepts]: Start accepts. Automaton has 10177 states and 19248 transitions. Word has length 49 [2021-11-03 04:12:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:49,214 INFO L470 AbstractCegarLoop]: Abstraction has 10177 states and 19248 transitions. [2021-11-03 04:12:49,214 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 04:12:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 10177 states and 19248 transitions. [2021-11-03 04:12:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:12:49,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:49,217 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 04:12:49,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:49,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:49,432 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 04:12:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2067597666, now seen corresponding path program 1 times [2021-11-03 04:12:49,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:49,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673092355] [2021-11-03 04:12:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:49,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:49,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:49,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:49,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:12:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:49,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:12:49,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:50,068 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 04:12:50,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:50,240 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 04:12:50,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:50,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673092355] [2021-11-03 04:12:50,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673092355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:50,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:12:50,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558633256] [2021-11-03 04:12:50,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:12:50,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:12:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:12:50,243 INFO L87 Difference]: Start difference. First operand 10177 states and 19248 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 04:12:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:53,951 INFO L93 Difference]: Finished difference Result 84402 states and 159809 transitions. [2021-11-03 04:12:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:12:53,951 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 04:12:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:54,177 INFO L225 Difference]: With dead ends: 84402 [2021-11-03 04:12:54,178 INFO L226 Difference]: Without dead ends: 74295 [2021-11-03 04:12:54,205 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 04:12:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74295 states. [2021-11-03 04:12:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74295 to 19099. [2021-11-03 04:12:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 19089 states have (on average 1.891979674157892) internal successors, (36116), 19098 states have internal predecessors, (36116), 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 04:12:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 36116 transitions. [2021-11-03 04:12:55,798 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 36116 transitions. Word has length 49 [2021-11-03 04:12:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:55,799 INFO L470 AbstractCegarLoop]: Abstraction has 19099 states and 36116 transitions. [2021-11-03 04:12:55,799 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 04:12:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 36116 transitions. [2021-11-03 04:12:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:12:55,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:55,802 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, 1, 1, 1, 1, 1] [2021-11-03 04:12:55,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:56,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:56,018 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 04:12:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1725686366, now seen corresponding path program 1 times [2021-11-03 04:12:56,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:56,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506853086] [2021-11-03 04:12:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:56,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:56,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:56,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:56,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:12:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:12:56,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:12:56,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:12:56,628 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 04:12:56,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:12:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:12:56,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:12:56,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506853086] [2021-11-03 04:12:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506853086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:12:56,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:12:56,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:12:56,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480260360] [2021-11-03 04:12:56,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:12:56,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:12:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:12:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:12:56,738 INFO L87 Difference]: Start difference. First operand 19099 states and 36116 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 04:12:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:12:58,099 INFO L93 Difference]: Finished difference Result 56377 states and 106634 transitions. [2021-11-03 04:12:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:12:58,100 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 04:12:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:12:58,186 INFO L225 Difference]: With dead ends: 56377 [2021-11-03 04:12:58,186 INFO L226 Difference]: Without dead ends: 37310 [2021-11-03 04:12:58,212 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 04:12:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37310 states. [2021-11-03 04:12:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37310 to 18975. [2021-11-03 04:12:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18975 states, 18965 states have (on average 1.89127339836541) internal successors, (35868), 18974 states have internal predecessors, (35868), 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 04:12:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18975 states to 18975 states and 35868 transitions. [2021-11-03 04:12:59,435 INFO L78 Accepts]: Start accepts. Automaton has 18975 states and 35868 transitions. Word has length 50 [2021-11-03 04:12:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:12:59,436 INFO L470 AbstractCegarLoop]: Abstraction has 18975 states and 35868 transitions. [2021-11-03 04:12:59,436 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 04:12:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18975 states and 35868 transitions. [2021-11-03 04:12:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:12:59,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:12:59,438 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 04:12:59,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:12:59,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:12:59,654 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 04:12:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:12:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1748422117, now seen corresponding path program 1 times [2021-11-03 04:12:59,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:12:59,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036040461] [2021-11-03 04:12:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:12:59,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:12:59,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:12:59,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:12:59,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:13:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:00,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:13:00,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:00,248 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 04:13:00,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:00,435 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 04:13:00,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:00,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036040461] [2021-11-03 04:13:00,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036040461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:00,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:00,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:13:00,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722555185] [2021-11-03 04:13:00,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:13:00,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:13:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:13:00,438 INFO L87 Difference]: Start difference. First operand 18975 states and 35868 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 04:13:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:12,109 INFO L93 Difference]: Finished difference Result 71712 states and 135294 transitions. [2021-11-03 04:13:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:13:12,109 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 04:13:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:12,194 INFO L225 Difference]: With dead ends: 71712 [2021-11-03 04:13:12,194 INFO L226 Difference]: Without dead ends: 52771 [2021-11-03 04:13:12,217 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 04:13:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52771 states. [2021-11-03 04:13:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52771 to 36741. [2021-11-03 04:13:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36741 states, 36731 states have (on average 1.873512836568566) internal successors, (68816), 36740 states have internal predecessors, (68816), 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 04:13:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36741 states to 36741 states and 68816 transitions. [2021-11-03 04:13:14,015 INFO L78 Accepts]: Start accepts. Automaton has 36741 states and 68816 transitions. Word has length 50 [2021-11-03 04:13:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 36741 states and 68816 transitions. [2021-11-03 04:13:14,019 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 04:13:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36741 states and 68816 transitions. [2021-11-03 04:13:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:13:14,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:14,022 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 04:13:14,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:14,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:14,237 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 04:13:14,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1148017788, now seen corresponding path program 1 times [2021-11-03 04:13:14,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:14,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690909222] [2021-11-03 04:13:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:14,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:14,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:14,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:13:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:14,827 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 04:13:14,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:14,956 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 04:13:14,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:14,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690909222] [2021-11-03 04:13:14,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690909222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:14,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:14,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:14,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752657423] [2021-11-03 04:13:14,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:14,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:14,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:14,959 INFO L87 Difference]: Start difference. First operand 36741 states and 68816 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 04:13:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:18,665 INFO L93 Difference]: Finished difference Result 144013 states and 269897 transitions. [2021-11-03 04:13:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:18,666 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 04:13:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:18,841 INFO L225 Difference]: With dead ends: 144013 [2021-11-03 04:13:18,842 INFO L226 Difference]: Without dead ends: 107309 [2021-11-03 04:13:18,873 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 04:13:18,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107309 states. [2021-11-03 04:13:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107309 to 36627. [2021-11-03 04:13:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36627 states, 36617 states have (on average 1.8676024797225332) internal successors, (68386), 36626 states have internal predecessors, (68386), 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 04:13:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36627 states to 36627 states and 68386 transitions. [2021-11-03 04:13:20,868 INFO L78 Accepts]: Start accepts. Automaton has 36627 states and 68386 transitions. Word has length 54 [2021-11-03 04:13:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:20,868 INFO L470 AbstractCegarLoop]: Abstraction has 36627 states and 68386 transitions. [2021-11-03 04:13:20,869 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 04:13:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 36627 states and 68386 transitions. [2021-11-03 04:13:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:13:20,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:20,871 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 04:13:20,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:21,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,086 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 04:13:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1847353343, now seen corresponding path program 1 times [2021-11-03 04:13:21,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:21,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227274330] [2021-11-03 04:13:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:21,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:21,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:21,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:13:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:13:21,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:21,815 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 04:13:21,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:22,030 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 04:13:22,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:22,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227274330] [2021-11-03 04:13:22,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227274330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:22,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:22,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:13:22,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189207942] [2021-11-03 04:13:22,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:13:22,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:13:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:13:22,034 INFO L87 Difference]: Start difference. First operand 36627 states and 68386 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 04:13:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:31,940 INFO L93 Difference]: Finished difference Result 305217 states and 572117 transitions. [2021-11-03 04:13:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:13:31,940 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 04:13:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:32,695 INFO L225 Difference]: With dead ends: 305217 [2021-11-03 04:13:32,696 INFO L226 Difference]: Without dead ends: 268646 [2021-11-03 04:13:32,782 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 04:13:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268646 states. [2021-11-03 04:13:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268646 to 70127. [2021-11-03 04:13:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70127 states, 70117 states have (on average 1.867778142247957) internal successors, (130963), 70126 states have internal predecessors, (130963), 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 04:13:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70127 states to 70127 states and 130963 transitions. [2021-11-03 04:13:37,292 INFO L78 Accepts]: Start accepts. Automaton has 70127 states and 130963 transitions. Word has length 55 [2021-11-03 04:13:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:37,293 INFO L470 AbstractCegarLoop]: Abstraction has 70127 states and 130963 transitions. [2021-11-03 04:13:37,293 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 04:13:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 70127 states and 130963 transitions. [2021-11-03 04:13:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:13:37,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:37,295 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 04:13:37,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:13:37,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:37,509 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 04:13:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash -605025539, now seen corresponding path program 1 times [2021-11-03 04:13:37,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:37,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905907595] [2021-11-03 04:13:37,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:37,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:37,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:37,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:37,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9520331-e7b5-4788-aca2-450f1bd153f1/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:13:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:37,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:37,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:38,106 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 04:13:38,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:38,262 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 04:13:38,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:38,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905907595] [2021-11-03 04:13:38,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905907595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:38,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:38,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:38,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531637474] [2021-11-03 04:13:38,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:38,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:38,264 INFO L87 Difference]: Start difference. First operand 70127 states and 130963 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)