./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.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_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/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_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/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_5a76457a-8589-4744-a8b3-e764b85afca9/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 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:58,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:58,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:58,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:58,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:58,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:58,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:58,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:58,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:58,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:58,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:58,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:58,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:58,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:58,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:58,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:58,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:58,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:58,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:58,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:58,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:58,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:58,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:58,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:58,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:58,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:58,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:58,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:58,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:58,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:58,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:58,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:58,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:58,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:58,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:58,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:58,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:58,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:58,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:58,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:58,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:58,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:37:58,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:58,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:58,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:58,595 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:58,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:58,596 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:58,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:37:58,596 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:58,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:58,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:37:58,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:37:58,598 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:58,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:37:58,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:37:58,599 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:37:58,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:37:58,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:58,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:37:58,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:58,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:58,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:37:58,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:58,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:37:58,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:58,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:58,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:58,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:58,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:58,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:37:58,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:37:58,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:37:58,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:37:58,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:58,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:58,606 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_5a76457a-8589-4744-a8b3-e764b85afca9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2021-11-03 04:37:58,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:58,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:58,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:58,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:58,899 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:58,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-03 04:37:58,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/d4f0cc9c5/d84ec00de75747ed9bb3f91c0627d54a/FLAG0953dfada [2021-11-03 04:37:59,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:59,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-03 04:37:59,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/d4f0cc9c5/d84ec00de75747ed9bb3f91c0627d54a/FLAG0953dfada [2021-11-03 04:37:59,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/d4f0cc9c5/d84ec00de75747ed9bb3f91c0627d54a [2021-11-03 04:37:59,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:59,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:59,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:59,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:59,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:59,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:59" (1/1) ... [2021-11-03 04:37:59,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8ea79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:59, skipping insertion in model container [2021-11-03 04:37:59,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:59" (1/1) ... [2021-11-03 04:37:59,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:59,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:00,336 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_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-03 04:38:00,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:00,390 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:38:00,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46796564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:00, skipping insertion in model container [2021-11-03 04:38:00,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:00,392 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:38:00,394 INFO L168 Benchmark]: Toolchain (without parser) took 604.63 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 55.5 MB in the beginning and 99.8 MB in the end (delta: -44.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:38:00,395 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:38:00,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.04 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 55.5 MB in the beginning and 99.8 MB in the end (delta: -44.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:38:00,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 66.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 602.04 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 55.5 MB in the beginning and 99.8 MB in the end (delta: -44.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3042]: 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_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/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_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/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_5a76457a-8589-4744-a8b3-e764b85afca9/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 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:38:02,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:38:02,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:38:02,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:38:02,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:38:02,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:38:02,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:38:02,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:38:02,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:38:02,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:38:02,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:38:02,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:38:02,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:38:02,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:38:02,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:38:02,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:38:02,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:38:02,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:38:02,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:38:02,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:38:02,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:38:02,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:38:02,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:38:02,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:38:02,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:38:02,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:38:02,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:38:02,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:38:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:38:02,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:38:02,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:38:02,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:38:02,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:38:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:38:02,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:38:02,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:38:02,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:38:02,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:38:02,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:38:02,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:38:02,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:38:02,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:38:02,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:38:02,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:38:02,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:38:02,732 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:38:02,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:38:02,732 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:38:02,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:38:02,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:38:02,733 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:38:02,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:38:02,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:38:02,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:38:02,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:38:02,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:38:02,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:38:02,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:38:02,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:38:02,735 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:38:02,735 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:38:02,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:38:02,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:38:02,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:38:02,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:38:02,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:38:02,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:38:02,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:38:02,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:38:02,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:38:02,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:38:02,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:38:02,738 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:38:02,738 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:38:02,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:38:02,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:38:02,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:38:02,739 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_5a76457a-8589-4744-a8b3-e764b85afca9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2021-11-03 04:38:03,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:38:03,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:38:03,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:38:03,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:38:03,118 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:38:03,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-03 04:38:03,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/5feba32ad/ff9a4fa9624e4d039b435fc4ce274089/FLAGd9ee1cbe8 [2021-11-03 04:38:03,809 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:38:03,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-03 04:38:03,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/5feba32ad/ff9a4fa9624e4d039b435fc4ce274089/FLAGd9ee1cbe8 [2021-11-03 04:38:04,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/data/5feba32ad/ff9a4fa9624e4d039b435fc4ce274089 [2021-11-03 04:38:04,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:38:04,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:38:04,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:04,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:38:04,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:38:04,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:04" (1/1) ... [2021-11-03 04:38:04,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54260990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:04, skipping insertion in model container [2021-11-03 04:38:04,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:38:04" (1/1) ... [2021-11-03 04:38:04,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:38:04,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:04,603 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_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-03 04:38:04,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:04,672 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:38:04,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:38:04,818 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_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-03 04:38:04,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:04,869 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:38:04,958 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_5a76457a-8589-4744-a8b3-e764b85afca9/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-03 04:38:04,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:38:05,011 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:38:05,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05 WrapperNode [2021-11-03 04:38:05,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:38:05,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:38:05,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:38:05,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:38:05,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:05,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:05,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:38:05,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:38:05,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:38:05,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:38:05,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:05,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:05,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:06,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:06,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:06,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:06,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:38:06,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:38:06,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:38:06,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:38:06,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (1/1) ... [2021-11-03 04:38:06,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:38:06,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:38:06,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:38:06,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:38:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:38:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:38:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:38:06,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:38:24,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:38:24,835 INFO L299 CfgBuilder]: Removed 1897 assume(true) statements. [2021-11-03 04:38:24,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:38:24 BoogieIcfgContainer [2021-11-03 04:38:24,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:38:24,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:38:24,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:38:24,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:38:24,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:38:04" (1/3) ... [2021-11-03 04:38:24,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743babff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:38:24, skipping insertion in model container [2021-11-03 04:38:24,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:38:05" (2/3) ... [2021-11-03 04:38:24,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743babff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:38:24, skipping insertion in model container [2021-11-03 04:38:24,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:38:24" (3/3) ... [2021-11-03 04:38:24,855 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2021-11-03 04:38:24,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:38:24,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:38:24,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:38:24,964 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:38:24,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:38:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 8708 states, 8697 states have (on average 1.8943313786363114) internal successors, (16475), 8707 states have internal predecessors, (16475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:38:25,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:25,142 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] [2021-11-03 04:38:25,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1830845599, now seen corresponding path program 1 times [2021-11-03 04:38:25,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:25,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769186579] [2021-11-03 04:38:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:25,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:25,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:25,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:25,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:38:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:25,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:38:25,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:25,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769186579] [2021-11-03 04:38:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769186579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:25,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:25,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:38:25,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175814836] [2021-11-03 04:38:25,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:25,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:38:25,973 INFO L87 Difference]: Start difference. First operand has 8708 states, 8697 states have (on average 1.8943313786363114) internal successors, (16475), 8707 states have internal predecessors, (16475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:29,780 INFO L93 Difference]: Finished difference Result 60578 states and 114606 transitions. [2021-11-03 04:38:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:38:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 46 [2021-11-03 04:38:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:30,113 INFO L225 Difference]: With dead ends: 60578 [2021-11-03 04:38:30,113 INFO L226 Difference]: Without dead ends: 51871 [2021-11-03 04:38:30,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:38:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51871 states. [2021-11-03 04:38:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51871 to 8720. [2021-11-03 04:38:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8720 states, 8710 states have (on average 1.8911595866819748) internal successors, (16472), 8719 states have internal predecessors, (16472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8720 states to 8720 states and 16472 transitions. [2021-11-03 04:38:31,054 INFO L78 Accepts]: Start accepts. Automaton has 8720 states and 16472 transitions. Word has length 46 [2021-11-03 04:38:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:31,054 INFO L470 AbstractCegarLoop]: Abstraction has 8720 states and 16472 transitions. [2021-11-03 04:38:31,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8720 states and 16472 transitions. [2021-11-03 04:38:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 04:38:31,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:31,060 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] [2021-11-03 04:38:31,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:38:31,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:31,275 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash -916149833, now seen corresponding path program 1 times [2021-11-03 04:38:31,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:31,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671981891] [2021-11-03 04:38:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:31,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:31,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:31,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:31,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:38:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:31,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:31,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:31,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:31,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671981891] [2021-11-03 04:38:31,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671981891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:31,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:31,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:38:31,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048849853] [2021-11-03 04:38:31,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:38:31,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:31,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:38:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:31,973 INFO L87 Difference]: Start difference. First operand 8720 states and 16472 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:32,322 INFO L93 Difference]: Finished difference Result 17352 states and 32787 transitions. [2021-11-03 04:38:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-03 04:38:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:32,477 INFO L225 Difference]: With dead ends: 17352 [2021-11-03 04:38:32,477 INFO L226 Difference]: Without dead ends: 8646 [2021-11-03 04:38:32,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2021-11-03 04:38:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2021-11-03 04:38:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 8636 states have (on average 1.890690134321445) internal successors, (16328), 8645 states have internal predecessors, (16328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16328 transitions. [2021-11-03 04:38:32,717 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16328 transitions. Word has length 48 [2021-11-03 04:38:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:32,719 INFO L470 AbstractCegarLoop]: Abstraction has 8646 states and 16328 transitions. [2021-11-03 04:38:32,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16328 transitions. [2021-11-03 04:38:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:38:32,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:32,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:32,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:32,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:32,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1351060519, now seen corresponding path program 1 times [2021-11-03 04:38:32,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:32,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943155688] [2021-11-03 04:38:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:32,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:32,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:32,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:32,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:38:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:33,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:38:33,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:33,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:33,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:33,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943155688] [2021-11-03 04:38:33,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943155688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:33,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:33,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:38:33,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185516336] [2021-11-03 04:38:33,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:38:33,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:38:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:33,693 INFO L87 Difference]: Start difference. First operand 8646 states and 16328 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:34,350 INFO L93 Difference]: Finished difference Result 17266 states and 32619 transitions. [2021-11-03 04:38:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:38:34,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 04:38:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:34,373 INFO L225 Difference]: With dead ends: 17266 [2021-11-03 04:38:34,373 INFO L226 Difference]: Without dead ends: 8646 [2021-11-03 04:38:34,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:38:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2021-11-03 04:38:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2021-11-03 04:38:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 8636 states have (on average 1.8895321908290876) internal successors, (16318), 8645 states have internal predecessors, (16318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16318 transitions. [2021-11-03 04:38:34,739 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16318 transitions. Word has length 50 [2021-11-03 04:38:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:34,739 INFO L470 AbstractCegarLoop]: Abstraction has 8646 states and 16318 transitions. [2021-11-03 04:38:34,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16318 transitions. [2021-11-03 04:38:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:38:34,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:34,745 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:34,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:34,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:34,963 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1963220943, now seen corresponding path program 1 times [2021-11-03 04:38:34,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:34,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864766031] [2021-11-03 04:38:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:34,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:34,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:34,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:34,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:38:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:38:35,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:35,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:35,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:35,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864766031] [2021-11-03 04:38:35,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864766031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:35,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:35,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:38:35,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335008545] [2021-11-03 04:38:35,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:38:35,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:38:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:35,750 INFO L87 Difference]: Start difference. First operand 8646 states and 16318 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:43,301 INFO L93 Difference]: Finished difference Result 38578 states and 72393 transitions. [2021-11-03 04:38:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:38:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:38:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:43,368 INFO L225 Difference]: With dead ends: 38578 [2021-11-03 04:38:43,369 INFO L226 Difference]: Without dead ends: 30002 [2021-11-03 04:38:43,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 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 04:38:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30002 states. [2021-11-03 04:38:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30002 to 15298. [2021-11-03 04:38:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15288 states have (on average 1.8895211930926217) internal successors, (28887), 15297 states have internal predecessors, (28887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 28887 transitions. [2021-11-03 04:38:44,230 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 28887 transitions. Word has length 54 [2021-11-03 04:38:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 28887 transitions. [2021-11-03 04:38:44,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 28887 transitions. [2021-11-03 04:38:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:38:44,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:44,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:44,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:44,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:44,450 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1663512598, now seen corresponding path program 1 times [2021-11-03 04:38:44,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:44,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611420125] [2021-11-03 04:38:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:44,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:44,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:44,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:44,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:38:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:44,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:38:44,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:45,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:45,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:45,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611420125] [2021-11-03 04:38:45,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611420125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:45,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:45,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:38:45,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306628725] [2021-11-03 04:38:45,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:38:45,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:38:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:45,200 INFO L87 Difference]: Start difference. First operand 15298 states and 28887 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:50,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:50,911 INFO L93 Difference]: Finished difference Result 125939 states and 237896 transitions. [2021-11-03 04:38:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:38:50,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:38:50,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:51,289 INFO L225 Difference]: With dead ends: 125939 [2021-11-03 04:38:51,289 INFO L226 Difference]: Without dead ends: 110711 [2021-11-03 04:38:51,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:38:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110711 states. [2021-11-03 04:38:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110711 to 28243. [2021-11-03 04:38:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28243 states, 28233 states have (on average 1.8849573194488718) internal successors, (53218), 28242 states have internal predecessors, (53218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28243 states to 28243 states and 53218 transitions. [2021-11-03 04:38:53,089 INFO L78 Accepts]: Start accepts. Automaton has 28243 states and 53218 transitions. Word has length 54 [2021-11-03 04:38:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:53,090 INFO L470 AbstractCegarLoop]: Abstraction has 28243 states and 53218 transitions. [2021-11-03 04:38:53,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 28243 states and 53218 transitions. [2021-11-03 04:38:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:38:53,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:53,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:53,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:38:53,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:53,308 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 57118417, now seen corresponding path program 1 times [2021-11-03 04:38:53,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:53,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849004395] [2021-11-03 04:38:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:53,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:53,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:53,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:53,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:38:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:53,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:53,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:53,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:54,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:54,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849004395] [2021-11-03 04:38:54,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849004395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:54,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:54,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:38:54,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085353126] [2021-11-03 04:38:54,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:38:54,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:38:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:54,051 INFO L87 Difference]: Start difference. First operand 28243 states and 53218 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:56,176 INFO L93 Difference]: Finished difference Result 83729 states and 157780 transitions. [2021-11-03 04:38:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 04:38:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:56,274 INFO L225 Difference]: With dead ends: 83729 [2021-11-03 04:38:56,274 INFO L226 Difference]: Without dead ends: 55518 [2021-11-03 04:38:56,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55518 states. [2021-11-03 04:38:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55518 to 28119. [2021-11-03 04:38:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28119 states, 28109 states have (on average 1.884449820342239) internal successors, (52970), 28118 states have internal predecessors, (52970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28119 states to 28119 states and 52970 transitions. [2021-11-03 04:38:57,919 INFO L78 Accepts]: Start accepts. Automaton has 28119 states and 52970 transitions. Word has length 56 [2021-11-03 04:38:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:57,920 INFO L470 AbstractCegarLoop]: Abstraction has 28119 states and 52970 transitions. [2021-11-03 04:38:57,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 28119 states and 52970 transitions. [2021-11-03 04:38:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:38:57,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:57,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:57,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:58,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:58,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:38:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -570965804, now seen corresponding path program 1 times [2021-11-03 04:38:58,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:58,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432123722] [2021-11-03 04:38:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:58,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:58,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:58,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:38:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:58,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:38:58,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:58,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:58,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:58,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432123722] [2021-11-03 04:38:58,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432123722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:58,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:58,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:38:58,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21302271] [2021-11-03 04:38:58,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:38:58,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:38:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:58,879 INFO L87 Difference]: Start difference. First operand 28119 states and 52970 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:14,382 INFO L93 Difference]: Finished difference Result 106483 states and 200383 transitions. [2021-11-03 04:39:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:39:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 04:39:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:14,610 INFO L225 Difference]: With dead ends: 106483 [2021-11-03 04:39:14,610 INFO L226 Difference]: Without dead ends: 78398 [2021-11-03 04:39:14,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:39:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78398 states. [2021-11-03 04:39:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78398 to 50366. [2021-11-03 04:39:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50366 states, 50356 states have (on average 1.8480617999841131) internal successors, (93061), 50365 states have internal predecessors, (93061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50366 states to 50366 states and 93061 transitions. [2021-11-03 04:39:16,561 INFO L78 Accepts]: Start accepts. Automaton has 50366 states and 93061 transitions. Word has length 56 [2021-11-03 04:39:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:16,561 INFO L470 AbstractCegarLoop]: Abstraction has 50366 states and 93061 transitions. [2021-11-03 04:39:16,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 50366 states and 93061 transitions. [2021-11-03 04:39:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:39:16,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:16,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:16,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:16,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:16,778 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2145089138, now seen corresponding path program 1 times [2021-11-03 04:39:16,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:16,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908768849] [2021-11-03 04:39:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:16,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:16,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:16,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:39:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:17,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:17,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:17,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:17,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:17,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908768849] [2021-11-03 04:39:17,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908768849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:17,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:17,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:39:17,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48951041] [2021-11-03 04:39:17,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:17,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:17,511 INFO L87 Difference]: Start difference. First operand 50366 states and 93061 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:23,335 INFO L93 Difference]: Finished difference Result 198173 states and 366202 transitions. [2021-11-03 04:39:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:23,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:39:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:23,575 INFO L225 Difference]: With dead ends: 198173 [2021-11-03 04:39:23,575 INFO L226 Difference]: Without dead ends: 147844 [2021-11-03 04:39:23,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147844 states. [2021-11-03 04:39:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147844 to 50252. [2021-11-03 04:39:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50252 states, 50242 states have (on average 1.8436965088969388) internal successors, (92631), 50251 states have internal predecessors, (92631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50252 states to 50252 states and 92631 transitions. [2021-11-03 04:39:26,473 INFO L78 Accepts]: Start accepts. Automaton has 50252 states and 92631 transitions. Word has length 60 [2021-11-03 04:39:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:26,473 INFO L470 AbstractCegarLoop]: Abstraction has 50252 states and 92631 transitions. [2021-11-03 04:39:26,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 50252 states and 92631 transitions. [2021-11-03 04:39:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:39:26,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:26,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:26,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:39:26,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:26,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:39:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 435175991, now seen corresponding path program 1 times [2021-11-03 04:39:26,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:26,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661110046] [2021-11-03 04:39:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:26,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:26,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:26,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:26,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a76457a-8589-4744-a8b3-e764b85afca9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:39:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:27,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:27,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:27,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:27,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661110046] [2021-11-03 04:39:27,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661110046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:27,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:27,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:39:27,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932588041] [2021-11-03 04:39:27,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:39:27,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:39:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:39:27,574 INFO L87 Difference]: Start difference. First operand 50252 states and 92631 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)