./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:49:51,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:49:51,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:49:51,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:49:51,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:49:51,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:49:51,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:49:51,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:49:51,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:49:51,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:49:51,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:49:51,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:49:51,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:49:51,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:49:51,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:49:51,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:49:51,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:49:51,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:49:51,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:49:51,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:49:51,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:49:51,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:49:51,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:49:51,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:49:51,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:49:51,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:49:51,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:49:51,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:49:51,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:49:51,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:49:51,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:49:51,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:49:51,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:49:51,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:49:51,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:49:51,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:49:51,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:49:51,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:49:51,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:49:51,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:49:51,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:49:51,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:49:51,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:49:51,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:49:51,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:49:51,348 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:49:51,348 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:49:51,348 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:49:51,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:49:51,349 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:49:51,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:49:51,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:49:51,351 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:49:51,351 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:49:51,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:49:51,352 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:49:51,352 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:49:51,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:49:51,353 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:49:51,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:49:51,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:49:51,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:49:51,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:49:51,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:49:51,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:49:51,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:49:51,356 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:49:51,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:49:51,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:49:51,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:49:51,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:49:51,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:49:51,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:49:51,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:49:51,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:49:51,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:49:51,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:49:51,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:49:51,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:49:51,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:49:51,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:49:51,362 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2021-11-03 04:49:51,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:49:51,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:49:51,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:49:51,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:49:51,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:49:51,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2021-11-03 04:49:51,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/3b0303027/4f62ec9275ea440598865afb0156080d/FLAG1ee3f8b73 [2021-11-03 04:49:52,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:49:52,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2021-11-03 04:49:52,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/3b0303027/4f62ec9275ea440598865afb0156080d/FLAG1ee3f8b73 [2021-11-03 04:49:52,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/3b0303027/4f62ec9275ea440598865afb0156080d [2021-11-03 04:49:52,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:49:52,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:49:52,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:52,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:49:52,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:49:52,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:52" (1/1) ... [2021-11-03 04:49:52,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6a0422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:52, skipping insertion in model container [2021-11-03 04:49:52,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:52" (1/1) ... [2021-11-03 04:49:52,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:49:53,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:49:53,237 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2021-11-03 04:49:53,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:53,749 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:49:53,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@593cc81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:53, skipping insertion in model container [2021-11-03 04:49:53,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:53,751 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:49:53,754 INFO L168 Benchmark]: Toolchain (without parser) took 889.80 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 47.0 MB in the beginning and 72.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,755 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 52.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:49:53,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 880.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 46.8 MB in the beginning and 72.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:49:53,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 52.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 880.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 46.8 MB in the beginning and 72.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 316]: 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:49:56,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:49:56,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:49:56,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:49:56,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:49:56,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:49:56,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:49:56,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:49:56,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:49:56,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:49:56,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:49:56,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:49:56,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:49:56,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:49:56,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:49:56,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:49:56,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:49:56,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:49:56,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:49:56,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:49:56,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:49:56,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:49:56,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:49:56,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:49:56,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:49:56,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:49:56,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:49:56,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:49:56,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:49:56,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:49:56,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:49:56,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:49:56,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:49:56,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:49:56,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:49:56,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:49:56,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:49:56,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:49:56,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:49:56,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:49:56,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:49:56,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:49:56,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:49:56,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:49:56,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:49:56,568 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:49:56,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:49:56,568 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:49:56,569 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:49:56,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:49:56,569 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:49:56,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:49:56,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:49:56,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:49:56,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:49:56,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:49:56,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:49:56,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:49:56,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:49:56,578 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:49:56,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:49:56,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:49:56,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:49:56,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:49:56,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:49:56,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:49:56,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:49:56,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:49:56,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:49:56,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:49:56,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:49:56,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:49:56,582 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:49:56,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:49:56,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:49:56,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:49:56,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:49:56,583 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2021-11-03 04:49:57,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:49:57,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:49:57,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:49:57,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:49:57,118 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:49:57,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2021-11-03 04:49:57,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/85480906a/de564c394b4e40c3a1f8f3cd2b23474f/FLAGdf550ffc1 [2021-11-03 04:49:58,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:49:58,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2021-11-03 04:49:58,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/85480906a/de564c394b4e40c3a1f8f3cd2b23474f/FLAGdf550ffc1 [2021-11-03 04:49:58,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/data/85480906a/de564c394b4e40c3a1f8f3cd2b23474f [2021-11-03 04:49:58,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:49:58,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:49:58,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:58,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:49:58,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:49:58,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:58" (1/1) ... [2021-11-03 04:49:58,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e57f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:58, skipping insertion in model container [2021-11-03 04:49:58,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:49:58" (1/1) ... [2021-11-03 04:49:58,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:49:58,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:49:58,569 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2021-11-03 04:49:59,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:59,141 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:49:59,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:49:59,190 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2021-11-03 04:49:59,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:59,439 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:49:59,453 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_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2021-11-03 04:49:59,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:49:59,680 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:49:59,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59 WrapperNode [2021-11-03 04:49:59,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:49:59,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:49:59,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:49:59,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:49:59,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:49:59,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:00,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:50:00,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:50:00,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:50:00,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:50:00,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:00,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:00,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:00,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:01,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:01,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:01,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:01,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:50:01,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:50:01,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:50:01,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:50:01,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (1/1) ... [2021-11-03 04:50:01,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:50:01,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:50:01,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:50:02,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:50:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:50:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:50:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:50:02,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:50:26,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:50:26,085 INFO L299 CfgBuilder]: Removed 2197 assume(true) statements. [2021-11-03 04:50:26,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:26 BoogieIcfgContainer [2021-11-03 04:50:26,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:50:26,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:50:26,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:50:26,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:50:26,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:49:58" (1/3) ... [2021-11-03 04:50:26,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:26, skipping insertion in model container [2021-11-03 04:50:26,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:49:59" (2/3) ... [2021-11-03 04:50:26,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:50:26, skipping insertion in model container [2021-11-03 04:50:26,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:50:26" (3/3) ... [2021-11-03 04:50:26,111 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2021-11-03 04:50:26,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:50:26,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:50:26,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:50:26,225 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:50:26,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:50:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 9253 states, 9242 states have (on average 1.884332395585371) internal successors, (17415), 9252 states have internal predecessors, (17415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:50:26,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:26,448 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] [2021-11-03 04:50:26,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1223980468, now seen corresponding path program 1 times [2021-11-03 04:50:26,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:26,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037321593] [2021-11-03 04:50:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:26,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:26,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:50:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:27,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:50:27,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:27,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:27,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:27,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037321593] [2021-11-03 04:50:27,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037321593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:27,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:27,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:50:27,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784266546] [2021-11-03 04:50:27,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:50:27,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:50:27,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:50:27,487 INFO L87 Difference]: Start difference. First operand has 9253 states, 9242 states have (on average 1.884332395585371) internal successors, (17415), 9252 states have internal predecessors, (17415), 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) [2021-11-03 04:50:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:50:32,229 INFO L93 Difference]: Finished difference Result 64393 states and 121186 transitions. [2021-11-03 04:50:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:50:32,231 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 [2021-11-03 04:50:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:50:32,817 INFO L225 Difference]: With dead ends: 64393 [2021-11-03 04:50:32,818 INFO L226 Difference]: Without dead ends: 55141 [2021-11-03 04:50:32,874 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 [2021-11-03 04:50:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55141 states. [2021-11-03 04:50:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55141 to 9265. [2021-11-03 04:50:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 9255 states have (on average 1.8813614262560778) internal successors, (17412), 9264 states have internal predecessors, (17412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 17412 transitions. [2021-11-03 04:50:33,989 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 17412 transitions. Word has length 47 [2021-11-03 04:50:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:50:33,990 INFO L470 AbstractCegarLoop]: Abstraction has 9265 states and 17412 transitions. [2021-11-03 04:50:33,991 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) [2021-11-03 04:50:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 17412 transitions. [2021-11-03 04:50:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:50:34,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:34,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:34,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:50:34,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:50:34,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -485221858, now seen corresponding path program 1 times [2021-11-03 04:50:34,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:34,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489334574] [2021-11-03 04:50:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:34,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:34,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:34,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:50:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:50:34,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:34,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:35,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:35,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489334574] [2021-11-03 04:50:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489334574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:35,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:35,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:50:35,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909955260] [2021-11-03 04:50:35,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:50:35,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:50:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:50:35,043 INFO L87 Difference]: Start difference. First operand 9265 states and 17412 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) [2021-11-03 04:50:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:50:35,553 INFO L93 Difference]: Finished difference Result 18442 states and 34667 transitions. [2021-11-03 04:50:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:50:35,553 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 [2021-11-03 04:50:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:50:35,588 INFO L225 Difference]: With dead ends: 18442 [2021-11-03 04:50:35,588 INFO L226 Difference]: Without dead ends: 9191 [2021-11-03 04:50:35,606 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 [2021-11-03 04:50:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-11-03 04:50:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2021-11-03 04:50:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9181 states have (on average 1.8808408670079513) internal successors, (17268), 9190 states have internal predecessors, (17268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17268 transitions. [2021-11-03 04:50:36,007 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17268 transitions. Word has length 49 [2021-11-03 04:50:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:50:36,008 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 17268 transitions. [2021-11-03 04:50:36,009 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) [2021-11-03 04:50:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17268 transitions. [2021-11-03 04:50:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:50:36,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:36,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:36,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:50:36,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:50:36,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:36,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1082551236, now seen corresponding path program 1 times [2021-11-03 04:50:36,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:36,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034202204] [2021-11-03 04:50:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:36,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:36,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:36,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:50:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:36,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:50:36,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:37,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:37,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:37,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034202204] [2021-11-03 04:50:37,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034202204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:37,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:37,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:50:37,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652576089] [2021-11-03 04:50:37,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:50:37,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:50:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:50:37,357 INFO L87 Difference]: Start difference. First operand 9191 states and 17268 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) [2021-11-03 04:50:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:50:38,290 INFO L93 Difference]: Finished difference Result 18356 states and 34499 transitions. [2021-11-03 04:50:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:50:38,291 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 [2021-11-03 04:50:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:50:38,320 INFO L225 Difference]: With dead ends: 18356 [2021-11-03 04:50:38,320 INFO L226 Difference]: Without dead ends: 9191 [2021-11-03 04:50:38,333 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 [2021-11-03 04:50:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-11-03 04:50:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2021-11-03 04:50:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9181 states have (on average 1.8797516610391025) internal successors, (17258), 9190 states have internal predecessors, (17258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17258 transitions. [2021-11-03 04:50:38,741 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17258 transitions. Word has length 51 [2021-11-03 04:50:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:50:38,741 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 17258 transitions. [2021-11-03 04:50:38,742 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) [2021-11-03 04:50:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17258 transitions. [2021-11-03 04:50:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:50:38,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:38,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:38,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:50:38,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:50:38,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1419041018, now seen corresponding path program 1 times [2021-11-03 04:50:38,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:38,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594832803] [2021-11-03 04:50:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:38,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:38,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:39,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:50:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:39,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:50:39,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:39,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:39,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:39,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594832803] [2021-11-03 04:50:39,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594832803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:39,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:39,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:50:39,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952071891] [2021-11-03 04:50:39,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:50:39,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:50:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:50:39,973 INFO L87 Difference]: Start difference. First operand 9191 states and 17258 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) [2021-11-03 04:50:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:50:47,241 INFO L93 Difference]: Finished difference Result 40976 states and 76529 transitions. [2021-11-03 04:50:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:50:47,242 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 [2021-11-03 04:50:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:50:47,393 INFO L225 Difference]: With dead ends: 40976 [2021-11-03 04:50:47,394 INFO L226 Difference]: Without dead ends: 31855 [2021-11-03 04:50:47,420 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 [2021-11-03 04:50:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31855 states. [2021-11-03 04:50:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31855 to 16279. [2021-11-03 04:50:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16279 states, 16269 states have (on average 1.8795869444956665) internal successors, (30579), 16278 states have internal predecessors, (30579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16279 states to 16279 states and 30579 transitions. [2021-11-03 04:50:48,717 INFO L78 Accepts]: Start accepts. Automaton has 16279 states and 30579 transitions. Word has length 55 [2021-11-03 04:50:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:50:48,719 INFO L470 AbstractCegarLoop]: Abstraction has 16279 states and 30579 transitions. [2021-11-03 04:50:48,719 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) [2021-11-03 04:50:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 16279 states and 30579 transitions. [2021-11-03 04:50:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:50:48,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:48,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:50:48,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:50:48,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:50:48,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:50:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:50:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2116336203, now seen corresponding path program 1 times [2021-11-03 04:50:48,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:50:48,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161245124] [2021-11-03 04:50:48,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:50:48,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:50:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:50:48,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:50:48,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:50:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:50:49,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:50:49,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:50:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:49,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:50:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:50:49,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:50:49,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161245124] [2021-11-03 04:50:49,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161245124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:50:49,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:50:49,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:50:49,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012048391] [2021-11-03 04:50:49,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:50:49,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:50:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:50:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:50:49,909 INFO L87 Difference]: Start difference. First operand 16279 states and 30579 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:50:56,820 INFO L93 Difference]: Finished difference Result 133576 states and 250980 transitions. [2021-11-03 04:50:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:50:56,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 04:50:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:50:57,139 INFO L225 Difference]: With dead ends: 133576 [2021-11-03 04:50:57,139 INFO L226 Difference]: Without dead ends: 117367 [2021-11-03 04:50:57,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:50:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117367 states. [2021-11-03 04:50:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117367 to 29987. [2021-11-03 04:50:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29987 states, 29977 states have (on average 1.875637989124996) internal successors, (56226), 29986 states have internal predecessors, (56226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29987 states to 29987 states and 56226 transitions. [2021-11-03 04:50:59,819 INFO L78 Accepts]: Start accepts. Automaton has 29987 states and 56226 transitions. Word has length 55 [2021-11-03 04:50:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:50:59,819 INFO L470 AbstractCegarLoop]: Abstraction has 29987 states and 56226 transitions. [2021-11-03 04:50:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:50:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 29987 states and 56226 transitions. [2021-11-03 04:50:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:50:59,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:50:59,822 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] [2021-11-03 04:50:59,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:00,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:00,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash -328888753, now seen corresponding path program 1 times [2021-11-03 04:51:00,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:00,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433818990] [2021-11-03 04:51:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:00,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:00,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:00,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:00,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:51:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:00,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:51:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:00,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:00,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:00,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433818990] [2021-11-03 04:51:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433818990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:00,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:00,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:51:00,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684006050] [2021-11-03 04:51:00,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:51:00,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:51:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:51:00,719 INFO L87 Difference]: Start difference. First operand 29987 states and 56226 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) [2021-11-03 04:51:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:03,304 INFO L93 Difference]: Finished difference Result 88801 states and 166484 transitions. [2021-11-03 04:51:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:51:03,304 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 [2021-11-03 04:51:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:03,425 INFO L225 Difference]: With dead ends: 88801 [2021-11-03 04:51:03,426 INFO L226 Difference]: Without dead ends: 58846 [2021-11-03 04:51:03,460 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 [2021-11-03 04:51:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58846 states. [2021-11-03 04:51:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58846 to 29863. [2021-11-03 04:51:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29863 states, 29853 states have (on average 1.8751214283321609) internal successors, (55978), 29862 states have internal predecessors, (55978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29863 states to 29863 states and 55978 transitions. [2021-11-03 04:51:05,214 INFO L78 Accepts]: Start accepts. Automaton has 29863 states and 55978 transitions. Word has length 56 [2021-11-03 04:51:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:05,215 INFO L470 AbstractCegarLoop]: Abstraction has 29863 states and 55978 transitions. [2021-11-03 04:51:05,215 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) [2021-11-03 04:51:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29863 states and 55978 transitions. [2021-11-03 04:51:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:51:05,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:05,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:05,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:51:05,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:05,434 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash -956972974, now seen corresponding path program 1 times [2021-11-03 04:51:05,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:05,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586955625] [2021-11-03 04:51:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:05,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:05,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:05,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:51:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:05,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:51:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:06,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:06,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:06,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586955625] [2021-11-03 04:51:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586955625] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:06,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:06,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:51:06,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413034607] [2021-11-03 04:51:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:51:06,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:51:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:51:06,347 INFO L87 Difference]: Start difference. First operand 29863 states and 55978 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) [2021-11-03 04:51:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:25,892 INFO L93 Difference]: Finished difference Result 113483 states and 212347 transitions. [2021-11-03 04:51:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:51:25,892 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 [2021-11-03 04:51:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:26,062 INFO L225 Difference]: With dead ends: 113483 [2021-11-03 04:51:26,063 INFO L226 Difference]: Without dead ends: 83654 [2021-11-03 04:51:26,092 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 [2021-11-03 04:51:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83654 states. [2021-11-03 04:51:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83654 to 53963. [2021-11-03 04:51:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53963 states, 53953 states have (on average 1.8398420847774914) internal successors, (99265), 53962 states have internal predecessors, (99265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53963 states to 53963 states and 99265 transitions. [2021-11-03 04:51:28,495 INFO L78 Accepts]: Start accepts. Automaton has 53963 states and 99265 transitions. Word has length 56 [2021-11-03 04:51:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:28,495 INFO L470 AbstractCegarLoop]: Abstraction has 53963 states and 99265 transitions. [2021-11-03 04:51:28,496 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) [2021-11-03 04:51:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 53963 states and 99265 transitions. [2021-11-03 04:51:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:51:28,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:28,497 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] [2021-11-03 04:51:28,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:51:28,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:28,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1244318349, now seen corresponding path program 1 times [2021-11-03 04:51:28,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:28,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273041377] [2021-11-03 04:51:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:28,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:28,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:28,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:28,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:51:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:51:29,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:29,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:29,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:29,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273041377] [2021-11-03 04:51:29,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273041377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:29,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:29,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:51:29,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299976643] [2021-11-03 04:51:29,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:51:29,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:51:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:51:29,448 INFO L87 Difference]: Start difference. First operand 53963 states and 99265 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) [2021-11-03 04:51:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:51:35,615 INFO L93 Difference]: Finished difference Result 211806 states and 389533 transitions. [2021-11-03 04:51:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:51:35,615 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 [2021-11-03 04:51:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:51:35,906 INFO L225 Difference]: With dead ends: 211806 [2021-11-03 04:51:35,906 INFO L226 Difference]: Without dead ends: 157880 [2021-11-03 04:51:35,962 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 [2021-11-03 04:51:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157880 states. [2021-11-03 04:51:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157880 to 53849. [2021-11-03 04:51:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53849 states, 53839 states have (on average 1.8357510354947157) internal successors, (98835), 53848 states have internal predecessors, (98835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:51:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53849 states to 53849 states and 98835 transitions. [2021-11-03 04:51:39,229 INFO L78 Accepts]: Start accepts. Automaton has 53849 states and 98835 transitions. Word has length 59 [2021-11-03 04:51:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:51:39,230 INFO L470 AbstractCegarLoop]: Abstraction has 53849 states and 98835 transitions. [2021-11-03 04:51:39,230 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) [2021-11-03 04:51:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 53849 states and 98835 transitions. [2021-11-03 04:51:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:51:39,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:51:39,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:51:39,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:51:39,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:51:39,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:51:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:51:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1715118834, now seen corresponding path program 1 times [2021-11-03 04:51:39,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:51:39,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534673416] [2021-11-03 04:51:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:51:39,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:51:39,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:51:39,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:51:39,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9e3a72b-1a5b-4e5d-ade6-52090bc455fa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:51:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:51:39,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:51:39,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:51:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:40,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:51:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:51:40,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:51:40,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534673416] [2021-11-03 04:51:40,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534673416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:51:40,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:51:40,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:51:40,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061420834] [2021-11-03 04:51:40,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:51:40,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:51:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:51:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:51:40,347 INFO L87 Difference]: Start difference. First operand 53849 states and 98835 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)