./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.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_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/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_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/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_8a292866-47f8-4192-b368-dba8f5359c44/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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:37:47,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:37:47,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:37:47,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:37:47,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:37:47,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:37:47,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:37:47,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:37:47,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:37:47,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:37:47,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:37:47,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:37:47,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:37:47,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:37:47,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:37:47,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:37:47,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:37:47,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:37:47,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:37:47,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:37:47,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:37:47,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:37:47,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:37:47,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:37:47,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:37:47,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:37:47,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:37:47,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:37:47,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:37:47,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:37:47,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:37:47,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:37:47,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:37:47,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:37:47,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:37:47,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:37:47,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:37:47,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:37:47,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:37:47,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:37:47,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:37:47,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:37:47,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:37:47,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:37:47,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:37:47,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:37:47,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:37:47,362 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:37:47,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:37:47,362 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:37:47,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:37:47,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:37:47,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:37:47,363 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:37:47,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:37:47,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:37:47,364 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:37:47,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:37:47,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:37:47,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:37:47,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:37:47,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:37:47,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:47,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:37:47,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:37:47,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:37:47,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:37:47,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:37:47,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:37:47,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:37:47,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:37:47,369 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_8a292866-47f8-4192-b368-dba8f5359c44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2021-11-03 05:37:47,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:37:47,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:37:47,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:37:47,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:37:47,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:37:47,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-03 05:37:47,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/1d59a03f2/57e2970463a84113be27d79b3ec53ee0/FLAG80b7887d2 [2021-11-03 05:37:48,348 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:37:48,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-03 05:37:48,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/1d59a03f2/57e2970463a84113be27d79b3ec53ee0/FLAG80b7887d2 [2021-11-03 05:37:48,539 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/1d59a03f2/57e2970463a84113be27d79b3ec53ee0 [2021-11-03 05:37:48,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:37:48,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:37:48,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:48,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:37:48,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:37:48,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:48" (1/1) ... [2021-11-03 05:37:48,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2b8d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:48, skipping insertion in model container [2021-11-03 05:37:48,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:48" (1/1) ... [2021-11-03 05:37:48,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:37:48,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:48,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-03 05:37:49,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:49,301 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 05:37:49,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ad3a3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:49, skipping insertion in model container [2021-11-03 05:37:49,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:49,303 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:37:49,305 INFO L168 Benchmark]: Toolchain (without parser) took 759.85 ms. Allocated memory is still 109.1 MB. Free memory was 68.7 MB in the beginning and 70.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,306 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 109.1 MB. Free memory is still 87.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:49,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.21 ms. Allocated memory is still 109.1 MB. Free memory was 68.5 MB in the beginning and 70.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:49,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 109.1 MB. Free memory is still 87.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 757.21 ms. Allocated memory is still 109.1 MB. Free memory was 68.5 MB in the beginning and 70.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1062]: 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_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/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_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/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_8a292866-47f8-4192-b368-dba8f5359c44/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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:37:51,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:37:51,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:37:51,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:37:51,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:37:51,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:37:51,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:37:51,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:37:51,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:37:51,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:37:51,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:37:51,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:37:51,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:37:51,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:37:51,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:37:51,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:37:51,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:37:51,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:37:51,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:37:51,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:37:51,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:37:51,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:37:51,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:37:51,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:37:51,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:37:51,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:37:51,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:37:51,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:37:51,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:37:51,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:37:51,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:37:51,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:37:51,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:37:51,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:37:51,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:37:51,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:37:51,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:37:51,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:37:51,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:37:51,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:37:51,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:37:51,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:37:51,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:37:51,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:37:51,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:37:51,629 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:37:51,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:37:51,630 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:37:51,630 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:37:51,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:37:51,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:37:51,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:37:51,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:37:51,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:37:51,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:37:51,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:37:51,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:37:51,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:37:51,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:37:51,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:37:51,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:37:51,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:37:51,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:37:51,635 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:37:51,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:37:51,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:37:51,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:37:51,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:37:51,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:51,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:37:51,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:37:51,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:37:51,637 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:37:51,637 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:37:51,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:37:51,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:37:51,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:37:51,638 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_8a292866-47f8-4192-b368-dba8f5359c44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2021-11-03 05:37:51,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:37:52,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:37:52,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:37:52,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:37:52,031 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:37:52,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-03 05:37:52,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/ea3afc15a/d64ab43ccd2a46458e4153e5ffec9a72/FLAG5ec82559e [2021-11-03 05:37:52,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:37:52,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2021-11-03 05:37:52,841 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/ea3afc15a/d64ab43ccd2a46458e4153e5ffec9a72/FLAG5ec82559e [2021-11-03 05:37:53,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/data/ea3afc15a/d64ab43ccd2a46458e4153e5ffec9a72 [2021-11-03 05:37:53,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:37:53,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:37:53,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:53,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:37:53,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:37:53,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:53" (1/1) ... [2021-11-03 05:37:53,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9ff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:53, skipping insertion in model container [2021-11-03 05:37:53,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:53" (1/1) ... [2021-11-03 05:37:53,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:37:53,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:53,341 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_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-03 05:37:53,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:53,737 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:37:53,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:53,776 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_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-03 05:37:53,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:53,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:37:53,962 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_8a292866-47f8-4192-b368-dba8f5359c44/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2021-11-03 05:37:54,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:54,050 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:37:54,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54 WrapperNode [2021-11-03 05:37:54,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:54,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:54,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:37:54,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:37:54,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:54,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:37:54,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:37:54,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:37:54,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:54,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:55,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:37:55,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:37:55,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:37:55,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:37:55,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (1/1) ... [2021-11-03 05:37:55,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:55,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:37:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:37:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:37:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:37:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:37:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:38:08,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:38:08,933 INFO L299 CfgBuilder]: Removed 1347 assume(true) statements. [2021-11-03 05:38:08,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:38:08 BoogieIcfgContainer [2021-11-03 05:38:08,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:38:08,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:38:08,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:38:08,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:38:08,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:37:53" (1/3) ... [2021-11-03 05:38:08,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9feab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:38:08, skipping insertion in model container [2021-11-03 05:38:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:54" (2/3) ... [2021-11-03 05:38:08,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9feab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:38:08, skipping insertion in model container [2021-11-03 05:38:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:38:08" (3/3) ... [2021-11-03 05:38:08,948 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2021-11-03 05:38:08,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:38:08,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 05:38:09,019 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:38:09,025 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 05:38:09,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 05:38:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 6073 states, 6062 states have (on average 1.8937644341801385) internal successors, (11480), 6072 states have internal predecessors, (11480), 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 05:38:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:38:09,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:09,146 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:09,147 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 05:38:09,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1235075695, now seen corresponding path program 1 times [2021-11-03 05:38:09,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:09,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221440328] [2021-11-03 05:38:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:09,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:09,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:09,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:09,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:38:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:09,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:38:09,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:09,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:09,896 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 05:38:09,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:09,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221440328] [2021-11-03 05:38:09,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221440328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:09,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:09,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:38:09,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403338523] [2021-11-03 05:38:09,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:38:09,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:38:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:38:09,940 INFO L87 Difference]: Start difference. First operand has 6073 states, 6062 states have (on average 1.8937644341801385) internal successors, (11480), 6072 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:12,378 INFO L93 Difference]: Finished difference Result 42133 states and 79641 transitions. [2021-11-03 05:38:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:38:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 05:38:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:12,780 INFO L225 Difference]: With dead ends: 42133 [2021-11-03 05:38:12,780 INFO L226 Difference]: Without dead ends: 36061 [2021-11-03 05:38:12,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:38:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36061 states. [2021-11-03 05:38:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36061 to 6085. [2021-11-03 05:38:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6075 states have (on average 1.8892181069958849) internal successors, (11477), 6084 states have internal predecessors, (11477), 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 05:38:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 11477 transitions. [2021-11-03 05:38:13,365 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 11477 transitions. Word has length 41 [2021-11-03 05:38:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:13,366 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 11477 transitions. [2021-11-03 05:38:13,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 11477 transitions. [2021-11-03 05:38:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 05:38:13,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:13,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:13,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:13,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:13,592 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 05:38:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1271103065, now seen corresponding path program 1 times [2021-11-03 05:38:13,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629725950] [2021-11-03 05:38:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:13,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:13,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:13,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:38:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:13,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:13,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:14,028 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 05:38:14,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:14,138 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 05:38:14,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:14,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629725950] [2021-11-03 05:38:14,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629725950] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:14,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:14,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:38:14,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414077841] [2021-11-03 05:38:14,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:38:14,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:38:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:14,142 INFO L87 Difference]: Start difference. First operand 6085 states and 11477 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:14,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:14,380 INFO L93 Difference]: Finished difference Result 12082 states and 22797 transitions. [2021-11-03 05:38:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:38:14,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-03 05:38:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:14,396 INFO L225 Difference]: With dead ends: 12082 [2021-11-03 05:38:14,397 INFO L226 Difference]: Without dead ends: 6011 [2021-11-03 05:38:14,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-11-03 05:38:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2021-11-03 05:38:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6001 states have (on average 1.8885185802366273) internal successors, (11333), 6010 states have internal predecessors, (11333), 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 05:38:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 11333 transitions. [2021-11-03 05:38:14,725 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 11333 transitions. Word has length 43 [2021-11-03 05:38:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:14,727 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 11333 transitions. [2021-11-03 05:38:14,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 11333 transitions. [2021-11-03 05:38:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:38:14,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:14,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:14,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:14,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:14,955 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 05:38:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -673290505, now seen corresponding path program 1 times [2021-11-03 05:38:14,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:14,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834089271] [2021-11-03 05:38:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:14,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:14,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:14,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:15,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:38:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:15,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:38:15,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:15,430 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 05:38:15,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:15,560 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 05:38:15,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:15,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834089271] [2021-11-03 05:38:15,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834089271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:15,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:15,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:38:15,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469852559] [2021-11-03 05:38:15,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:38:15,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:38:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:38:15,563 INFO L87 Difference]: Start difference. First operand 6011 states and 11333 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:16,154 INFO L93 Difference]: Finished difference Result 11996 states and 22629 transitions. [2021-11-03 05:38:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:38:16,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-03 05:38:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:16,169 INFO L225 Difference]: With dead ends: 11996 [2021-11-03 05:38:16,169 INFO L226 Difference]: Without dead ends: 6011 [2021-11-03 05:38:16,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:38:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-11-03 05:38:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2021-11-03 05:38:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6001 states have (on average 1.8868521913014498) internal successors, (11323), 6010 states have internal predecessors, (11323), 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 05:38:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 11323 transitions. [2021-11-03 05:38:16,427 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 11323 transitions. Word has length 45 [2021-11-03 05:38:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:16,428 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 11323 transitions. [2021-11-03 05:38:16,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 11323 transitions. [2021-11-03 05:38:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:38:16,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:16,432 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 05:38:16,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:16,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:16,655 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 05:38:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1308599999, now seen corresponding path program 1 times [2021-11-03 05:38:16,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:16,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721274220] [2021-11-03 05:38:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:16,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:16,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:16,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:38:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:17,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:38:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:17,224 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 05:38:17,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:17,392 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 05:38:17,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:17,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721274220] [2021-11-03 05:38:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721274220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:17,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:38:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136538624] [2021-11-03 05:38:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:38:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:38:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:38:17,396 INFO L87 Difference]: Start difference. First operand 6011 states and 11323 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:24,636 INFO L93 Difference]: Finished difference Result 26984 states and 50415 transitions. [2021-11-03 05:38:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:38:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 05:38:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:24,689 INFO L225 Difference]: With dead ends: 26984 [2021-11-03 05:38:24,690 INFO L226 Difference]: Without dead ends: 21043 [2021-11-03 05:38:24,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:38:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21043 states. [2021-11-03 05:38:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21043 to 10555. [2021-11-03 05:38:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10555 states, 10545 states have (on average 1.8867709815078235) internal successors, (19896), 10554 states have internal predecessors, (19896), 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 05:38:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10555 states to 10555 states and 19896 transitions. [2021-11-03 05:38:25,265 INFO L78 Accepts]: Start accepts. Automaton has 10555 states and 19896 transitions. Word has length 49 [2021-11-03 05:38:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:25,266 INFO L470 AbstractCegarLoop]: Abstraction has 10555 states and 19896 transitions. [2021-11-03 05:38:25,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10555 states and 19896 transitions. [2021-11-03 05:38:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:38:25,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:25,268 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 05:38:25,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:25,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:25,487 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 05:38:25,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1490615226, now seen corresponding path program 1 times [2021-11-03 05:38:25,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:25,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329208272] [2021-11-03 05:38:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:25,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:25,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:25,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:38:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:38:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:26,015 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 05:38:26,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:26,157 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 05:38:26,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:26,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329208272] [2021-11-03 05:38:26,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329208272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:26,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:26,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:38:26,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245521035] [2021-11-03 05:38:26,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:38:26,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:26,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:38:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:38:26,160 INFO L87 Difference]: Start difference. First operand 10555 states and 19896 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:29,901 INFO L93 Difference]: Finished difference Result 87852 states and 165737 transitions. [2021-11-03 05:38:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:38:29,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 05:38:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:30,132 INFO L225 Difference]: With dead ends: 87852 [2021-11-03 05:38:30,133 INFO L226 Difference]: Without dead ends: 77367 [2021-11-03 05:38:30,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:38:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77367 states. [2021-11-03 05:38:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77367 to 19867. [2021-11-03 05:38:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19867 states, 19857 states have (on average 1.8852797502140304) internal successors, (37436), 19866 states have internal predecessors, (37436), 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 05:38:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19867 states to 19867 states and 37436 transitions. [2021-11-03 05:38:31,353 INFO L78 Accepts]: Start accepts. Automaton has 19867 states and 37436 transitions. Word has length 49 [2021-11-03 05:38:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:31,353 INFO L470 AbstractCegarLoop]: Abstraction has 19867 states and 37436 transitions. [2021-11-03 05:38:31,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 19867 states and 37436 transitions. [2021-11-03 05:38:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:38:31,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:31,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:31,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:31,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:31,569 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 05:38:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1148703926, now seen corresponding path program 1 times [2021-11-03 05:38:31,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:31,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372425543] [2021-11-03 05:38:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:31,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:31,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:31,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:31,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:38:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:32,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:32,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:32,157 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 05:38:32,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:32,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:32,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372425543] [2021-11-03 05:38:32,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372425543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:32,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:32,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:38:32,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201544679] [2021-11-03 05:38:32,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:38:32,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:38:32,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:32,255 INFO L87 Difference]: Start difference. First operand 19867 states and 37436 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:33,573 INFO L93 Difference]: Finished difference Result 58681 states and 110594 transitions. [2021-11-03 05:38:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:38:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 05:38:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:33,648 INFO L225 Difference]: With dead ends: 58681 [2021-11-03 05:38:33,648 INFO L226 Difference]: Without dead ends: 38846 [2021-11-03 05:38:33,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:38:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38846 states. [2021-11-03 05:38:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38846 to 19743. [2021-11-03 05:38:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19743 states, 19733 states have (on average 1.8845588607915675) internal successors, (37188), 19742 states have internal predecessors, (37188), 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 05:38:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19743 states to 19743 states and 37188 transitions. [2021-11-03 05:38:34,666 INFO L78 Accepts]: Start accepts. Automaton has 19743 states and 37188 transitions. Word has length 50 [2021-11-03 05:38:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:34,667 INFO L470 AbstractCegarLoop]: Abstraction has 19743 states and 37188 transitions. [2021-11-03 05:38:34,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19743 states and 37188 transitions. [2021-11-03 05:38:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:38:34,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:34,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:34,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:34,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:34,888 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 05:38:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1969562739, now seen corresponding path program 1 times [2021-11-03 05:38:34,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:34,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354471280] [2021-11-03 05:38:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:34,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:34,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:34,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:34,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:38:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:38:35,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:35,390 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 05:38:35,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:35,532 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 05:38:35,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:35,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354471280] [2021-11-03 05:38:35,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354471280] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:35,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:35,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:38:35,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884242752] [2021-11-03 05:38:35,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:38:35,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:38:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:38:35,534 INFO L87 Difference]: Start difference. First operand 19743 states and 37188 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:44,057 INFO L93 Difference]: Finished difference Result 74622 states and 140298 transitions. [2021-11-03 05:38:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:38:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 05:38:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:44,146 INFO L225 Difference]: With dead ends: 74622 [2021-11-03 05:38:44,147 INFO L226 Difference]: Without dead ends: 54913 [2021-11-03 05:38:44,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:38:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54913 states. [2021-11-03 05:38:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54913 to 38367. [2021-11-03 05:38:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38367 states, 38357 states have (on average 1.866986469223349) internal successors, (71612), 38366 states have internal predecessors, (71612), 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 05:38:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38367 states to 38367 states and 71612 transitions. [2021-11-03 05:38:45,846 INFO L78 Accepts]: Start accepts. Automaton has 38367 states and 71612 transitions. Word has length 50 [2021-11-03 05:38:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:45,847 INFO L470 AbstractCegarLoop]: Abstraction has 38367 states and 71612 transitions. [2021-11-03 05:38:45,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 38367 states and 71612 transitions. [2021-11-03 05:38:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 05:38:45,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:45,849 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:45,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:46,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:46,066 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 05:38:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1854604412, now seen corresponding path program 1 times [2021-11-03 05:38:46,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:46,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703348116] [2021-11-03 05:38:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:46,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:46,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:46,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:46,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:38:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:46,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:38:46,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:46,549 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 05:38:46,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:46,645 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 05:38:46,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:46,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703348116] [2021-11-03 05:38:46,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703348116] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:46,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:46,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:38:46,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489045331] [2021-11-03 05:38:46,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:38:46,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:38:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:46,648 INFO L87 Difference]: Start difference. First operand 38367 states and 71612 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:50,103 INFO L93 Difference]: Finished difference Result 150517 states and 281081 transitions. [2021-11-03 05:38:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:38:50,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 05:38:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:50,299 INFO L225 Difference]: With dead ends: 150517 [2021-11-03 05:38:50,299 INFO L226 Difference]: Without dead ends: 112187 [2021-11-03 05:38:50,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:38:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112187 states. [2021-11-03 05:38:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112187 to 38253. [2021-11-03 05:38:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38253 states, 38243 states have (on average 1.8613079517820255) internal successors, (71182), 38252 states have internal predecessors, (71182), 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 05:38:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38253 states to 38253 states and 71182 transitions. [2021-11-03 05:38:52,306 INFO L78 Accepts]: Start accepts. Automaton has 38253 states and 71182 transitions. Word has length 54 [2021-11-03 05:38:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:52,306 INFO L470 AbstractCegarLoop]: Abstraction has 38253 states and 71182 transitions. [2021-11-03 05:38:52,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:38:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 38253 states and 71182 transitions. [2021-11-03 05:38:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:38:52,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:52,308 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 05:38:52,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:52,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:52,520 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 05:38:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1140766719, now seen corresponding path program 1 times [2021-11-03 05:38:52,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:52,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272855468] [2021-11-03 05:38:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:52,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:52,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:52,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:52,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a292866-47f8-4192-b368-dba8f5359c44/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:38:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:52,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:38:53,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:53,179 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 05:38:53,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:53,338 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 05:38:53,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272855468] [2021-11-03 05:38:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272855468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:38:53,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:38:53,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:38:53,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377415739] [2021-11-03 05:38:53,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:38:53,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:38:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:38:53,340 INFO L87 Difference]: Start difference. First operand 38253 states and 71182 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 05:39:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:39:02,236 INFO L93 Difference]: Finished difference Result 313263 states and 584805 transitions. [2021-11-03 05:39:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:39:02,237 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 05:39:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:39:02,932 INFO L225 Difference]: With dead ends: 313263 [2021-11-03 05:39:02,932 INFO L226 Difference]: Without dead ends: 275066 [2021-11-03 05:39:02,995 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 05:39:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275066 states.