./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.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_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/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_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/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_fb4524ef-e29b-41c1-8e82-19dae5392518/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 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:23,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:23,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:23,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:23,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:23,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:23,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:23,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:23,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:23,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:23,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:23,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:23,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:23,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:23,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:23,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:23,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:23,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:23,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:23,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:23,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:23,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:23,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:23,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:23,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:23,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:23,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:23,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:23,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:23,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:23,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:23,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:23,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:23,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:23,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:23,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:23,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:23,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:23,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:23,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:23,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:23,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:47:24,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:24,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:24,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:24,008 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:24,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:24,009 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:24,009 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:47:24,009 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:24,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:24,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:47:24,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:47:24,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:24,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:47:24,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:47:24,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:47:24,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:24,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:24,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:47:24,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:24,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:24,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:24,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:24,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:24,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:24,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:24,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:24,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:24,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:24,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:24,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:24,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:24,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:24,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:24,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:24,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:47:24,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:47:24,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:24,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:24,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:24,020 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_fb4524ef-e29b-41c1-8e82-19dae5392518/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b [2021-11-07 01:47:24,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:47:24,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:47:24,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:47:24,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:47:24,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:47:24,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-07 01:47:24,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/b91d113eb/b00ea2c745ef4d9f8e774b8a491e2f47/FLAG4bd61c11f [2021-11-07 01:47:24,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:47:24,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-07 01:47:25,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/b91d113eb/b00ea2c745ef4d9f8e774b8a491e2f47/FLAG4bd61c11f [2021-11-07 01:47:25,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/b91d113eb/b00ea2c745ef4d9f8e774b8a491e2f47 [2021-11-07 01:47:25,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:47:25,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:47:25,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:25,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:47:25,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:47:25,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:25" (1/1) ... [2021-11-07 01:47:25,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0f98ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:25, skipping insertion in model container [2021-11-07 01:47:25,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:25" (1/1) ... [2021-11-07 01:47:25,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:47:25,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:25,522 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_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-07 01:47:25,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:25,967 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:47:25,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1884a33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:25, skipping insertion in model container [2021-11-07 01:47:25,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:25,968 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:47:25,971 INFO L168 Benchmark]: Toolchain (without parser) took 761.30 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 88.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:25,973 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 58.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:47:25,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.91 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.6 MB in the beginning and 88.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:25,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 58.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 757.91 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.6 MB in the beginning and 88.3 MB in the end (delta: -18.6 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: 86]: 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_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/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_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/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_fb4524ef-e29b-41c1-8e82-19dae5392518/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 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:28,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:28,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:28,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:28,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:28,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:28,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:28,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:28,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:28,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:28,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:28,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:28,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:28,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:28,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:28,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:28,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:28,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:28,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:28,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:28,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:28,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:28,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:28,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:28,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:28,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:28,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:28,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:28,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:28,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:28,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:28,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:28,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:28,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:28,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:28,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:28,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:28,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:28,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:28,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:28,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:28,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:47:28,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:28,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:28,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:28,442 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:28,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:28,442 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:28,443 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:28,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:28,443 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:28,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:28,446 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:28,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:28,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:28,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:28,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:28,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:28,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:28,448 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:47:28,448 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:47:28,448 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:28,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:28,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:28,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:28,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:28,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:47:28,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:28,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:28,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:28,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:28,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:28,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:47:28,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:28,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:28,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:28,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:28,452 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_fb4524ef-e29b-41c1-8e82-19dae5392518/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b [2021-11-07 01:47:28,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:47:28,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:47:28,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:47:28,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:47:28,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:47:28,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-07 01:47:28,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/75293eb4a/ce9b75c8ab9347b188595a5088db4952/FLAG249f95386 [2021-11-07 01:47:29,767 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:47:29,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-07 01:47:29,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/75293eb4a/ce9b75c8ab9347b188595a5088db4952/FLAG249f95386 [2021-11-07 01:47:29,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/data/75293eb4a/ce9b75c8ab9347b188595a5088db4952 [2021-11-07 01:47:29,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:47:29,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:47:29,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:29,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:47:29,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:47:29,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:29" (1/1) ... [2021-11-07 01:47:29,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d052ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:29, skipping insertion in model container [2021-11-07 01:47:29,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:29" (1/1) ... [2021-11-07 01:47:29,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:47:30,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:30,300 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_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-07 01:47:30,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:30,810 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:47:30,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:30,840 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_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-07 01:47:30,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:30,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:47:31,009 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_fb4524ef-e29b-41c1-8e82-19dae5392518/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-07 01:47:31,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:31,173 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:47:31,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31 WrapperNode [2021-11-07 01:47:31,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:31,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:47:31,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:47:31,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:47:31,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:47:31,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:47:31,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:47:31,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:47:31,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:31,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:32,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:32,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:32,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:47:32,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:47:32,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:47:32,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:47:32,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (1/1) ... [2021-11-07 01:47:32,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:47:32,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:47:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:47:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:47:32,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:47:32,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:47:32,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:47:48,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:47:48,856 INFO L299 CfgBuilder]: Removed 1377 assume(true) statements. [2021-11-07 01:47:48,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:47:48 BoogieIcfgContainer [2021-11-07 01:47:48,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:47:48,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:47:48,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:47:48,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:47:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:47:29" (1/3) ... [2021-11-07 01:47:48,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eed384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:47:48, skipping insertion in model container [2021-11-07 01:47:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:31" (2/3) ... [2021-11-07 01:47:48,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eed384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:47:48, skipping insertion in model container [2021-11-07 01:47:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:47:48" (3/3) ... [2021-11-07 01:47:48,879 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2021-11-07 01:47:48,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:47:48,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:47:48,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:47:48,987 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:47:48,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:47:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 6093 states, 6082 states have (on average 1.891647484380138) internal successors, (11505), 6092 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:47:49,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:49,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:49,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:47:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash -900787763, now seen corresponding path program 1 times [2021-11-07 01:47:49,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:49,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212585748] [2021-11-07 01:47:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:49,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:49,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:49,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:49,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:47:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:49,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:47:49,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:49,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:50,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:50,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212585748] [2021-11-07 01:47:50,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212585748] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:50,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:50,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:47:50,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683619426] [2021-11-07 01:47:50,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:47:50,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:47:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:47:50,206 INFO L87 Difference]: Start difference. First operand has 6093 states, 6082 states have (on average 1.891647484380138) internal successors, (11505), 6092 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:52,982 INFO L93 Difference]: Finished difference Result 42273 states and 79816 transitions. [2021-11-07 01:47:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:47:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:47:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:53,226 INFO L225 Difference]: With dead ends: 42273 [2021-11-07 01:47:53,227 INFO L226 Difference]: Without dead ends: 36181 [2021-11-07 01:47:53,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:47:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36181 states. [2021-11-07 01:47:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36181 to 6105. [2021-11-07 01:47:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6095 states have (on average 1.8871205906480721) internal successors, (11502), 6104 states have internal predecessors, (11502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 11502 transitions. [2021-11-07 01:47:53,955 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 11502 transitions. Word has length 47 [2021-11-07 01:47:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:53,956 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 11502 transitions. [2021-11-07 01:47:53,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 11502 transitions. [2021-11-07 01:47:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:47:53,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:53,962 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:53,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:54,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:54,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:47:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:54,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1684977207, now seen corresponding path program 1 times [2021-11-07 01:47:54,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:54,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543290772] [2021-11-07 01:47:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:54,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:54,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:54,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:54,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:47:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:54,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:47:54,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:54,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:54,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:54,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543290772] [2021-11-07 01:47:54,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543290772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:54,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:54,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:47:54,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096645394] [2021-11-07 01:47:54,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:47:54,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:47:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:47:54,902 INFO L87 Difference]: Start difference. First operand 6105 states and 11502 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:55,114 INFO L93 Difference]: Finished difference Result 12122 states and 22847 transitions. [2021-11-07 01:47:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:47:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:47:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:55,134 INFO L225 Difference]: With dead ends: 12122 [2021-11-07 01:47:55,135 INFO L226 Difference]: Without dead ends: 6031 [2021-11-07 01:47:55,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:47:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2021-11-07 01:47:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 6031. [2021-11-07 01:47:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6021 states have (on average 1.8863976083707026) internal successors, (11358), 6030 states have internal predecessors, (11358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 11358 transitions. [2021-11-07 01:47:55,361 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 11358 transitions. Word has length 49 [2021-11-07 01:47:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:55,362 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 11358 transitions. [2021-11-07 01:47:55,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 11358 transitions. [2021-11-07 01:47:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:47:55,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:55,365 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:55,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:47:55,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:55,580 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:47:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1087647829, now seen corresponding path program 1 times [2021-11-07 01:47:55,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:55,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500740466] [2021-11-07 01:47:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:55,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:55,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:55,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:47:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:56,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:47:56,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:56,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:56,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:56,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500740466] [2021-11-07 01:47:56,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500740466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:56,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:56,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:47:56,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864606653] [2021-11-07 01:47:56,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:47:56,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:47:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:47:56,431 INFO L87 Difference]: Start difference. First operand 6031 states and 11358 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:57,025 INFO L93 Difference]: Finished difference Result 12036 states and 22679 transitions. [2021-11-07 01:47:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:47:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:47:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:57,046 INFO L225 Difference]: With dead ends: 12036 [2021-11-07 01:47:57,046 INFO L226 Difference]: Without dead ends: 6031 [2021-11-07 01:47:57,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:47:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2021-11-07 01:47:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 6031. [2021-11-07 01:47:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6021 states have (on average 1.8847367546919116) internal successors, (11348), 6030 states have internal predecessors, (11348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 11348 transitions. [2021-11-07 01:47:57,351 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 11348 transitions. Word has length 51 [2021-11-07 01:47:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:57,352 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 11348 transitions. [2021-11-07 01:47:57,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:47:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 11348 transitions. [2021-11-07 01:47:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:47:57,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:57,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:57,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:57,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:57,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:47:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash 751158047, now seen corresponding path program 1 times [2021-11-07 01:47:57,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:57,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655438466] [2021-11-07 01:47:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:57,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:57,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:57,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:47:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:58,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:47:58,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:58,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:47:58,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:58,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655438466] [2021-11-07 01:47:58,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655438466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:58,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:58,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:47:58,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596499546] [2021-11-07 01:47:58,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:47:58,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:47:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:47:58,465 INFO L87 Difference]: Start difference. First operand 6031 states and 11348 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:03,836 INFO L93 Difference]: Finished difference Result 27072 states and 50525 transitions. [2021-11-07 01:48:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:48:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:48:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:03,903 INFO L225 Difference]: With dead ends: 27072 [2021-11-07 01:48:03,904 INFO L226 Difference]: Without dead ends: 21111 [2021-11-07 01:48:03,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:48:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21111 states. [2021-11-07 01:48:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21111 to 10591. [2021-11-07 01:48:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10591 states, 10581 states have (on average 1.884604479727814) internal successors, (19941), 10590 states have internal predecessors, (19941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10591 states to 10591 states and 19941 transitions. [2021-11-07 01:48:04,650 INFO L78 Accepts]: Start accepts. Automaton has 10591 states and 19941 transitions. Word has length 55 [2021-11-07 01:48:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:04,652 INFO L470 AbstractCegarLoop]: Abstraction has 10591 states and 19941 transitions. [2021-11-07 01:48:04,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 10591 states and 19941 transitions. [2021-11-07 01:48:04,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:48:04,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:04,656 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:04,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:04,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:04,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:04,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:04,871 INFO L85 PathProgramCache]: Analyzing trace with hash 48826274, now seen corresponding path program 1 times [2021-11-07 01:48:04,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:04,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116644838] [2021-11-07 01:48:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:04,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:04,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:04,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:04,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:48:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:48:05,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:05,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:05,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:05,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116644838] [2021-11-07 01:48:05,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116644838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:05,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:05,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:48:05,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012722350] [2021-11-07 01:48:05,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:48:05,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:05,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:48:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:48:05,800 INFO L87 Difference]: Start difference. First operand 10591 states and 19941 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:10,103 INFO L93 Difference]: Finished difference Result 87600 states and 165110 transitions. [2021-11-07 01:48:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:48:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:48:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:10,305 INFO L225 Difference]: With dead ends: 87600 [2021-11-07 01:48:10,306 INFO L226 Difference]: Without dead ends: 77079 [2021-11-07 01:48:10,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77079 states. [2021-11-07 01:48:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77079 to 19835. [2021-11-07 01:48:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19835 states, 19825 states have (on average 1.8838839848675915) internal successors, (37348), 19834 states have internal predecessors, (37348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19835 states to 19835 states and 37348 transitions. [2021-11-07 01:48:11,777 INFO L78 Accepts]: Start accepts. Automaton has 19835 states and 37348 transitions. Word has length 55 [2021-11-07 01:48:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:11,778 INFO L470 AbstractCegarLoop]: Abstraction has 19835 states and 37348 transitions. [2021-11-07 01:48:11,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19835 states and 37348 transitions. [2021-11-07 01:48:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:48:11,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:11,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:11,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:11,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:11,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1898568614, now seen corresponding path program 1 times [2021-11-07 01:48:11,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:11,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212877062] [2021-11-07 01:48:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:11,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:11,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:11,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:12,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:48:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:12,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:48:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:12,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:12,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:12,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212877062] [2021-11-07 01:48:12,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212877062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:12,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:12,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:48:12,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706855009] [2021-11-07 01:48:12,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:48:12,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:48:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:48:12,692 INFO L87 Difference]: Start difference. First operand 19835 states and 37348 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:14,468 INFO L93 Difference]: Finished difference Result 58505 states and 110170 transitions. [2021-11-07 01:48:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:48:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:14,572 INFO L225 Difference]: With dead ends: 58505 [2021-11-07 01:48:14,573 INFO L226 Difference]: Without dead ends: 38702 [2021-11-07 01:48:14,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:48:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38702 states. [2021-11-07 01:48:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38702 to 19711. [2021-11-07 01:48:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19711 states, 19701 states have (on average 1.8831531394345464) internal successors, (37100), 19710 states have internal predecessors, (37100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19711 states to 19711 states and 37100 transitions. [2021-11-07 01:48:15,631 INFO L78 Accepts]: Start accepts. Automaton has 19711 states and 37100 transitions. Word has length 56 [2021-11-07 01:48:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:15,631 INFO L470 AbstractCegarLoop]: Abstraction has 19711 states and 37100 transitions. [2021-11-07 01:48:15,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 19711 states and 37100 transitions. [2021-11-07 01:48:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:48:15,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:15,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:15,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:15,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:15,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1270484393, now seen corresponding path program 1 times [2021-11-07 01:48:15,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:15,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916156230] [2021-11-07 01:48:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:15,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:15,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:15,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:15,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:48:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:16,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:48:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:16,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:16,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:16,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916156230] [2021-11-07 01:48:16,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916156230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:16,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:16,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:48:16,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612688543] [2021-11-07 01:48:16,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:48:16,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:48:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:48:16,754 INFO L87 Difference]: Start difference. First operand 19711 states and 37100 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:29,214 INFO L93 Difference]: Finished difference Result 74995 states and 140709 transitions. [2021-11-07 01:48:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:48:29,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 01:48:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:29,330 INFO L225 Difference]: With dead ends: 74995 [2021-11-07 01:48:29,330 INFO L226 Difference]: Without dead ends: 55318 [2021-11-07 01:48:29,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:48:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55318 states. [2021-11-07 01:48:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55318 to 38259. [2021-11-07 01:48:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38259 states, 38249 states have (on average 1.8655912572877722) internal successors, (71357), 38258 states have internal predecessors, (71357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38259 states to 38259 states and 71357 transitions. [2021-11-07 01:48:31,051 INFO L78 Accepts]: Start accepts. Automaton has 38259 states and 71357 transitions. Word has length 56 [2021-11-07 01:48:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 38259 states and 71357 transitions. [2021-11-07 01:48:31,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 38259 states and 71357 transitions. [2021-11-07 01:48:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:48:31,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:31,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:31,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:31,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:31,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:31,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash -849126646, now seen corresponding path program 1 times [2021-11-07 01:48:31,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:31,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287561962] [2021-11-07 01:48:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:31,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:31,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:31,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:31,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:48:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:31,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:48:31,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:31,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:31,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:31,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287561962] [2021-11-07 01:48:31,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287561962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:31,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:31,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:48:31,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877433905] [2021-11-07 01:48:31,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:48:31,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:48:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:31,943 INFO L87 Difference]: Start difference. First operand 38259 states and 71357 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:36,186 INFO L93 Difference]: Finished difference Result 149670 states and 279251 transitions. [2021-11-07 01:48:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:48:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:48:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:36,389 INFO L225 Difference]: With dead ends: 149670 [2021-11-07 01:48:36,389 INFO L226 Difference]: Without dead ends: 111448 [2021-11-07 01:48:36,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111448 states. [2021-11-07 01:48:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111448 to 38145. [2021-11-07 01:48:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38145 states, 38135 states have (on average 1.8598924872164677) internal successors, (70927), 38144 states have internal predecessors, (70927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38145 states to 38145 states and 70927 transitions. [2021-11-07 01:48:38,676 INFO L78 Accepts]: Start accepts. Automaton has 38145 states and 70927 transitions. Word has length 59 [2021-11-07 01:48:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:38,676 INFO L470 AbstractCegarLoop]: Abstraction has 38145 states and 70927 transitions. [2021-11-07 01:48:38,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 38145 states and 70927 transitions. [2021-11-07 01:48:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:48:38,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:38,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:38,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:38,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:38,887 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:48:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1319927131, now seen corresponding path program 1 times [2021-11-07 01:48:38,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:38,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513221372] [2021-11-07 01:48:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:38,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:38,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:38,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:38,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:48:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:48:39,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:39,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:39,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:39,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513221372] [2021-11-07 01:48:39,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513221372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:39,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:39,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:48:39,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000298112] [2021-11-07 01:48:39,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:48:39,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:48:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:48:39,757 INFO L87 Difference]: Start difference. First operand 38145 states and 70927 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:50,097 INFO L93 Difference]: Finished difference Result 316798 states and 591282 transitions. [2021-11-07 01:48:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:48:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:48:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:50,771 INFO L225 Difference]: With dead ends: 316798 [2021-11-07 01:48:50,771 INFO L226 Difference]: Without dead ends: 278709 [2021-11-07 01:48:50,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:48:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278709 states. [2021-11-07 01:48:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278709 to 72933. [2021-11-07 01:48:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72933 states, 72923 states have (on average 1.860318418057403) internal successors, (135660), 72932 states have internal predecessors, (135660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72933 states to 72933 states and 135660 transitions. [2021-11-07 01:48:54,904 INFO L78 Accepts]: Start accepts. Automaton has 72933 states and 135660 transitions. Word has length 60 [2021-11-07 01:48:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:54,904 INFO L470 AbstractCegarLoop]: Abstraction has 72933 states and 135660 transitions. [2021-11-07 01:48:54,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:48:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 72933 states and 135660 transitions. [2021-11-07 01:48:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:48:54,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:54,906 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:54,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:55,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:55,121 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)] === [2021-11-07 01:48:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1585354025, now seen corresponding path program 1 times [2021-11-07 01:48:55,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:55,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450462943] [2021-11-07 01:48:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:55,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:55,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:55,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4524ef-e29b-41c1-8e82-19dae5392518/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:48:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:48:55,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:55,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:55,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:55,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450462943] [2021-11-07 01:48:55,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450462943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:55,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:55,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:48:55,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510800298] [2021-11-07 01:48:55,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:48:55,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:48:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:55,911 INFO L87 Difference]: Start difference. First operand 72933 states and 135660 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)