./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:10:52,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:10:52,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:10:52,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:10:52,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:10:52,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:10:52,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:10:52,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:10:52,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:10:52,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:10:52,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:10:52,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:10:52,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:10:52,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:10:52,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:10:52,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:10:52,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:10:52,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:10:52,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:10:52,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:10:52,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:10:52,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:10:52,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:10:52,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:10:52,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:10:52,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:10:52,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:10:52,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:10:52,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:10:52,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:10:52,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:10:52,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:10:52,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:10:52,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:10:52,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:10:52,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:10:52,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:10:52,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:10:52,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:10:52,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:10:52,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:10:52,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:10:52,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:10:52,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:10:52,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:10:52,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:10:52,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:10:52,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:10:52,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:10:52,993 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:10:52,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:10:52,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:10:52,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:10:52,994 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:10:52,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:10:52,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:10:52,995 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:10:52,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:10:52,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:10:52,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:10:52,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:10:52,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:10:52,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:10:52,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:10:52,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:10:52,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:10:53,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:10:53,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:10:53,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:10:53,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:10:53,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:10:53,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:10:53,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:53,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:10:53,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:10:53,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:10:53,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:10:53,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:10:53,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:10:53,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:10:53,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:10:53,005 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2021-11-07 02:10:53,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:10:53,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:10:53,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:10:53,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:10:53,365 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:10:53,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-07 02:10:53,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/2e62a8c0c/bc734420611548238f13cb50bed07c46/FLAG0460db2ef [2021-11-07 02:10:54,342 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:10:54,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-07 02:10:54,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/2e62a8c0c/bc734420611548238f13cb50bed07c46/FLAG0460db2ef [2021-11-07 02:10:54,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/2e62a8c0c/bc734420611548238f13cb50bed07c46 [2021-11-07 02:10:54,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:10:54,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:10:54,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:54,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:10:54,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:10:54,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:54" (1/1) ... [2021-11-07 02:10:54,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2002d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:54, skipping insertion in model container [2021-11-07 02:10:54,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:54" (1/1) ... [2021-11-07 02:10:54,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:10:54,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:10:54,931 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-07 02:10:55,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:55,506 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:10:55,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5634b6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:55, skipping insertion in model container [2021-11-07 02:10:55,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:55,508 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:10:55,512 INFO L168 Benchmark]: Toolchain (without parser) took 1057.38 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 65.2 MB in the beginning and 96.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:55,514 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:55,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1049.74 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 64.9 MB in the beginning and 96.8 MB in the end (delta: -31.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:55,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1049.74 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 64.9 MB in the beginning and 96.8 MB in the end (delta: -31.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 227]: 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:10:58,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:10:58,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:10:58,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:10:58,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:10:58,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:10:58,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:10:58,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:10:58,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:10:58,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:10:58,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:10:58,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:10:58,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:10:58,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:10:58,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:10:58,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:10:58,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:10:58,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:10:58,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:10:58,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:10:58,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:10:58,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:10:58,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:10:58,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:10:58,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:10:58,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:10:58,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:10:58,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:10:58,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:10:58,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:10:58,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:10:58,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:10:58,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:10:58,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:10:58,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:10:58,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:10:58,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:10:58,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:10:58,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:10:58,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:10:58,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:10:58,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:10:58,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:10:58,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:10:58,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:10:58,318 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:10:58,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:10:58,318 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:10:58,318 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:10:58,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:10:58,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:10:58,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:10:58,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:10:58,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:10:58,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:10:58,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:10:58,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:10:58,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:10:58,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:10:58,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:10:58,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:10:58,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:10:58,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:10:58,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:10:58,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:10:58,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:10:58,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:10:58,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:10:58,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:58,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:10:58,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:10:58,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:10:58,335 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:10:58,335 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:58,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:10:58,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:10:58,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:10:58,336 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2021-11-07 02:10:58,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:10:58,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:10:58,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:10:58,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:10:58,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:10:58,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-07 02:10:59,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/028a326bf/a90bab9b7e75464ca4f7cf08a7c02b84/FLAGf0c82d748 [2021-11-07 02:10:59,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:10:59,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2021-11-07 02:10:59,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/028a326bf/a90bab9b7e75464ca4f7cf08a7c02b84/FLAGf0c82d748 [2021-11-07 02:11:00,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/data/028a326bf/a90bab9b7e75464ca4f7cf08a7c02b84 [2021-11-07 02:11:00,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:11:00,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:11:00,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:00,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:11:00,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:11:00,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:00" (1/1) ... [2021-11-07 02:11:00,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d050910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:00, skipping insertion in model container [2021-11-07 02:11:00,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:00" (1/1) ... [2021-11-07 02:11:00,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:11:00,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:11:00,545 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-07 02:11:01,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:01,100 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:11:01,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:11:01,134 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-07 02:11:01,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:01,330 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:11:01,364 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_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2021-11-07 02:11:01,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:11:01,586 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:11:01,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01 WrapperNode [2021-11-07 02:11:01,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:11:01,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:11:01,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:11:01,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:11:01,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:01,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:03,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:11:03,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:11:03,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:11:03,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:11:03,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:03,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:03,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:03,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:04,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:05,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:05,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:05,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:11:05,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:11:05,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:11:05,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:11:05,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (1/1) ... [2021-11-07 02:11:05,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:11:05,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:11:05,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:11:05,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:11:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:11:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:11:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:11:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:11:50,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:11:50,590 INFO L299 CfgBuilder]: Removed 4177 assume(true) statements. [2021-11-07 02:11:50,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:50 BoogieIcfgContainer [2021-11-07 02:11:50,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:11:50,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:11:50,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:11:50,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:11:50,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:00" (1/3) ... [2021-11-07 02:11:50,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7743dcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:50, skipping insertion in model container [2021-11-07 02:11:50,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:01" (2/3) ... [2021-11-07 02:11:50,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7743dcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:50, skipping insertion in model container [2021-11-07 02:11:50,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:50" (3/3) ... [2021-11-07 02:11:50,626 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2021-11-07 02:11:50,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:11:50,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 02:11:50,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:11:50,786 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:11:50,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 02:11:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 17883 states, 17872 states have (on average 1.8861906893464637) internal successors, (33710), 17882 states have internal predecessors, (33710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 02:11:51,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:51,337 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] [2021-11-07 02:11:51,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:11:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1797476216, now seen corresponding path program 1 times [2021-11-07 02:11:51,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:51,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343526282] [2021-11-07 02:11:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:51,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:51,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:51,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:11:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:11:51,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:52,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:52,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:52,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343526282] [2021-11-07 02:11:52,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343526282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:52,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:52,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:11:52,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38649348] [2021-11-07 02:11:52,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:11:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:11:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:11:52,402 INFO L87 Difference]: Start difference. First operand has 17883 states, 17872 states have (on average 1.8861906893464637) internal successors, (33710), 17882 states have internal predecessors, (33710), 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 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:59,867 INFO L93 Difference]: Finished difference Result 124803 states and 235251 transitions. [2021-11-07 02:11:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:11:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 30 [2021-11-07 02:11:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:00,514 INFO L225 Difference]: With dead ends: 124803 [2021-11-07 02:12:00,515 INFO L226 Difference]: Without dead ends: 106921 [2021-11-07 02:12:00,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:12:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106921 states. [2021-11-07 02:12:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106921 to 17895. [2021-11-07 02:12:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17895 states, 17885 states have (on average 1.8846519429689683) internal successors, (33707), 17894 states have internal predecessors, (33707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17895 states to 17895 states and 33707 transitions. [2021-11-07 02:12:02,724 INFO L78 Accepts]: Start accepts. Automaton has 17895 states and 33707 transitions. Word has length 30 [2021-11-07 02:12:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:02,725 INFO L470 AbstractCegarLoop]: Abstraction has 17895 states and 33707 transitions. [2021-11-07 02:12:02,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 17895 states and 33707 transitions. [2021-11-07 02:12:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 02:12:02,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:02,733 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] [2021-11-07 02:12:02,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:02,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:12:02,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2118827298, now seen corresponding path program 1 times [2021-11-07 02:12:02,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:02,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532800036] [2021-11-07 02:12:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:02,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:02,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:02,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:12:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:03,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:03,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:03,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:03,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532800036] [2021-11-07 02:12:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532800036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:03,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:03,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:12:03,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990706175] [2021-11-07 02:12:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:12:03,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:12:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:03,678 INFO L87 Difference]: Start difference. First operand 17895 states and 33707 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:04,477 INFO L93 Difference]: Finished difference Result 35702 states and 67257 transitions. [2021-11-07 02:12:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:12:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-07 02:12:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:04,544 INFO L225 Difference]: With dead ends: 35702 [2021-11-07 02:12:04,545 INFO L226 Difference]: Without dead ends: 17821 [2021-11-07 02:12:04,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-07 02:12:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2021-11-07 02:12:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17821 states, 17811 states have (on average 1.884397282578182) internal successors, (33563), 17820 states have internal predecessors, (33563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33563 transitions. [2021-11-07 02:12:05,337 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33563 transitions. Word has length 32 [2021-11-07 02:12:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:05,339 INFO L470 AbstractCegarLoop]: Abstraction has 17821 states and 33563 transitions. [2021-11-07 02:12:05,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33563 transitions. [2021-11-07 02:12:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:12:05,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:05,357 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] [2021-11-07 02:12:05,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:05,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:12:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1349152512, now seen corresponding path program 1 times [2021-11-07 02:12:05,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:05,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412253988] [2021-11-07 02:12:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:05,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:05,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:05,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:12:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:06,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:12:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:06,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:06,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:06,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412253988] [2021-11-07 02:12:06,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412253988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:06,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:06,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:12:06,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339922636] [2021-11-07 02:12:06,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:06,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:12:06,443 INFO L87 Difference]: Start difference. First operand 17821 states and 33563 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-11-07 02:12:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:07,924 INFO L93 Difference]: Finished difference Result 35616 states and 67089 transitions. [2021-11-07 02:12:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:12:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 34 [2021-11-07 02:12:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:07,968 INFO L225 Difference]: With dead ends: 35616 [2021-11-07 02:12:07,968 INFO L226 Difference]: Without dead ends: 17821 [2021-11-07 02:12:08,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:12:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-07 02:12:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2021-11-07 02:12:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17821 states, 17811 states have (on average 1.8838358317893438) internal successors, (33553), 17820 states have internal predecessors, (33553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33553 transitions. [2021-11-07 02:12:08,780 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33553 transitions. Word has length 34 [2021-11-07 02:12:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:08,781 INFO L470 AbstractCegarLoop]: Abstraction has 17821 states and 33553 transitions. [2021-11-07 02:12:08,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-11-07 02:12:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33553 transitions. [2021-11-07 02:12:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:12:08,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:08,784 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] [2021-11-07 02:12:08,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:09,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:09,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:12:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:09,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1005857014, now seen corresponding path program 1 times [2021-11-07 02:12:09,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:09,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428559579] [2021-11-07 02:12:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:09,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:09,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:09,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:12:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:09,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:09,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:09,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:09,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428559579] [2021-11-07 02:12:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428559579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:09,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:09,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:12:09,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155896940] [2021-11-07 02:12:09,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:12:09,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:12:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:12:09,888 INFO L87 Difference]: Start difference. First operand 17821 states and 33553 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:21,269 INFO L93 Difference]: Finished difference Result 78996 states and 148341 transitions. [2021-11-07 02:12:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 02:12:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 38 [2021-11-07 02:12:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:21,479 INFO L225 Difference]: With dead ends: 78996 [2021-11-07 02:12:21,479 INFO L226 Difference]: Without dead ends: 61245 [2021-11-07 02:12:21,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 02:12:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61245 states. [2021-11-07 02:12:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61245 to 31764. [2021-11-07 02:12:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 31754 states have (on average 1.8833847704226239) internal successors, (59805), 31763 states have internal predecessors, (59805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 59805 transitions. [2021-11-07 02:12:23,413 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 59805 transitions. Word has length 38 [2021-11-07 02:12:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:23,414 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 59805 transitions. [2021-11-07 02:12:23,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 59805 transitions. [2021-11-07 02:12:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:12:23,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:23,416 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] [2021-11-07 02:12:23,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:23,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:23,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:12:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 313143057, now seen corresponding path program 1 times [2021-11-07 02:12:23,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:23,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069107454] [2021-11-07 02:12:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:23,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:23,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:23,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:23,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:12:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:24,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:24,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:24,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:24,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:24,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069107454] [2021-11-07 02:12:24,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069107454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:24,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:24,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:12:24,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704751625] [2021-11-07 02:12:24,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:12:24,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:12:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:12:24,522 INFO L87 Difference]: Start difference. First operand 31764 states and 59805 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:40,402 INFO L93 Difference]: Finished difference Result 262853 states and 494986 transitions. [2021-11-07 02:12:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:12:40,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-07 02:12:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:41,129 INFO L225 Difference]: With dead ends: 262853 [2021-11-07 02:12:41,129 INFO L226 Difference]: Without dead ends: 231159 [2021-11-07 02:12:41,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:12:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231159 states. [2021-11-07 02:12:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231159 to 58595. [2021-11-07 02:12:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58595 states, 58585 states have (on average 1.8795766834513954) internal successors, (110115), 58594 states have internal predecessors, (110115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58595 states to 58595 states and 110115 transitions. [2021-11-07 02:12:45,933 INFO L78 Accepts]: Start accepts. Automaton has 58595 states and 110115 transitions. Word has length 38 [2021-11-07 02:12:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:45,934 INFO L470 AbstractCegarLoop]: Abstraction has 58595 states and 110115 transitions. [2021-11-07 02:12:45,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 58595 states and 110115 transitions. [2021-11-07 02:12:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:12:45,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:45,936 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] [2021-11-07 02:12:45,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:46,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:46,151 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:12:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash 989545101, now seen corresponding path program 1 times [2021-11-07 02:12:46,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:46,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501746989] [2021-11-07 02:12:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:46,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:46,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:46,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:46,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e4bbecb-447e-4e88-ac52-b01f307c7f2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:12:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:46,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:12:46,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:46,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:12:46,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:46,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501746989] [2021-11-07 02:12:46,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501746989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:46,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:46,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:12:46,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137011444] [2021-11-07 02:12:46,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:12:46,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:12:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:46,929 INFO L87 Difference]: Start difference. First operand 58595 states and 110115 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:52,774 INFO L93 Difference]: Finished difference Result 174305 states and 327511 transitions. [2021-11-07 02:12:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:12:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-07 02:12:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:53,107 INFO L225 Difference]: With dead ends: 174305 [2021-11-07 02:12:53,107 INFO L226 Difference]: Without dead ends: 115742 [2021-11-07 02:12:53,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:12:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115742 states.