./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7 --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 aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:54:59,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:54:59,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:54:59,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:54:59,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:54:59,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:54:59,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:54:59,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:54:59,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:54:59,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:54:59,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:54:59,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:54:59,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:54:59,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:54:59,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:54:59,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:54:59,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:54:59,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:54:59,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:54:59,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:54:59,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:54:59,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:54:59,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:54:59,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:54:59,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:54:59,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:54:59,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:54:59,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:54:59,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:54:59,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:54:59,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:54:59,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:54:59,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:54:59,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:54:59,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:54:59,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:54:59,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:54:59,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:54:59,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:54:59,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:54:59,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:54:59,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:54:59,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:54:59,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:54:59,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:54:59,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:54:59,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:54:59,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:54:59,605 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:54:59,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:54:59,606 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:54:59,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:54:59,607 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:54:59,607 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:54:59,607 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:54:59,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:54:59,608 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:54:59,608 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:54:59,608 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:54:59,609 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:54:59,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:54:59,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:54:59,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:54:59,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:54:59,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:54:59,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:54:59,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:54:59,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:54:59,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:54:59,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:54:59,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:54:59,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:54:59,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:54:59,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:54:59,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:54:59,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:54:59,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:54:59,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:54:59,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:54:59,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:54:59,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:54:59,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:54:59,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:54:59,616 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2021-11-25 18:54:59,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:54:59,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:54:59,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:54:59,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:54:59,922 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:54:59,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-11-25 18:54:59,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/5f3c66e59/abc4453326f8488db79f0c903bcd79a1/FLAG9b6c1d242 [2021-11-25 18:55:00,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:55:00,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-11-25 18:55:00,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/5f3c66e59/abc4453326f8488db79f0c903bcd79a1/FLAG9b6c1d242 [2021-11-25 18:55:00,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/5f3c66e59/abc4453326f8488db79f0c903bcd79a1 [2021-11-25 18:55:00,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:55:00,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:55:00,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:00,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:55:00,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:55:00,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:00" (1/1) ... [2021-11-25 18:55:00,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7754e134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:00, skipping insertion in model container [2021-11-25 18:55:00,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:00" (1/1) ... [2021-11-25 18:55:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:55:00,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:55:01,048 WARN L230 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-11-25 18:55:01,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:03,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:55:03,461 WARN L230 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-11-25 18:55:03,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:03,485 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:55:03,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03 WrapperNode [2021-11-25 18:55:03,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:03,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:03,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:55:03,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:55:03,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,593 INFO L137 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2021-11-25 18:55:03,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:03,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:55:03,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:55:03,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:55:03,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:55:03,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:55:03,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:55:03,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:55:03,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (1/1) ... [2021-11-25 18:55:03,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:03,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:55:03,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:55:03,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:55:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:55:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:55:03,816 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:55:03,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:55:03,979 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:55:04,022 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:55:04,023 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:55:04,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:04 BoogieIcfgContainer [2021-11-25 18:55:04,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:55:04,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:55:04,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:55:04,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:55:04,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:55:00" (1/3) ... [2021-11-25 18:55:04,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e9b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:04, skipping insertion in model container [2021-11-25 18:55:04,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:03" (2/3) ... [2021-11-25 18:55:04,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e9b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:04, skipping insertion in model container [2021-11-25 18:55:04,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:04" (3/3) ... [2021-11-25 18:55:04,033 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2021-11-25 18:55:04,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:55:04,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:55:04,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:55:04,105 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 [2021-11-25 18:55:04,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:55:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-11-25 18:55:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:55:04,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:04,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:55:04,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1506668624, now seen corresponding path program 1 times [2021-11-25 18:55:04,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:04,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363434249] [2021-11-25 18:55:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:04,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:04,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:04,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363434249] [2021-11-25 18:55:04,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363434249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:04,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:04,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:55:04,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055625816] [2021-11-25 18:55:04,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:04,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:55:04,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:55:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:55:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:55:04,418 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-25 18:55:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:04,453 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2021-11-25 18:55:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:55:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-25 18:55:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:04,462 INFO L225 Difference]: With dead ends: 26 [2021-11-25 18:55:04,463 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:55:04,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:55:04,468 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:04,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:55:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:55:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2021-11-25 18:55:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-25 18:55:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-25 18:55:04,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2021-11-25 18:55:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:04,498 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-25 18:55:04,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-25 18:55:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-25 18:55:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:55:04,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:04,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:04,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:55:04,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash 486073672, now seen corresponding path program 1 times [2021-11-25 18:55:04,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:55:04,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290321362] [2021-11-25 18:55:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:04,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:55:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:04,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:55:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290321362] [2021-11-25 18:55:04,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290321362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:55:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217832086] [2021-11-25 18:55:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:04,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:04,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:55:04,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:55:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:04,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:55:04,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:04,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:04,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217832086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1792522524] [2021-11-25 18:55:04,776 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-25 18:55:04,777 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:55:04,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:55:04,786 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:55:04,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:55:04,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2021-11-25 18:55:04,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:04,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 73 [2021-11-25 18:55:05,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 29 [2021-11-25 18:55:05,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-25 18:55:05,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-25 18:55:05,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 117 [2021-11-25 18:55:05,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2021-11-25 18:55:05,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:55:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 135 [2021-11-25 18:55:05,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:05,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 72 [2021-11-25 18:55:05,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2021-11-25 18:55:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:55:06,069 INFO L354 Elim1Store]: treesize reduction 144, result has 24.6 percent of original size [2021-11-25 18:55:06,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 333 treesize of output 341 [2021-11-25 18:55:06,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:06,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 18:55:06,312 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:55:06,316 INFO L158 Benchmark]: Toolchain (without parser) took 5476.75ms. Allocated memory was 96.5MB in the beginning and 513.8MB in the end (delta: 417.3MB). Free memory was 59.9MB in the beginning and 231.7MB in the end (delta: -171.8MB). Peak memory consumption was 246.1MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,317 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:55:06,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2645.57ms. Allocated memory was 96.5MB in the beginning and 513.8MB in the end (delta: 417.3MB). Free memory was 59.7MB in the beginning and 209.0MB in the end (delta: -149.3MB). Peak memory consumption was 272.5MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.68ms. Allocated memory is still 513.8MB. Free memory was 209.0MB in the beginning and 282.5MB in the end (delta: -73.5MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,319 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 513.8MB. Free memory was 282.5MB in the beginning and 281.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,319 INFO L158 Benchmark]: RCFGBuilder took 397.68ms. Allocated memory is still 513.8MB. Free memory was 281.4MB in the beginning and 264.6MB in the end (delta: 16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,320 INFO L158 Benchmark]: TraceAbstraction took 2288.55ms. Allocated memory is still 513.8MB. Free memory was 263.6MB in the beginning and 231.7MB in the end (delta: 31.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2021-11-25 18:55:06,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2645.57ms. Allocated memory was 96.5MB in the beginning and 513.8MB in the end (delta: 417.3MB). Free memory was 59.7MB in the beginning and 209.0MB in the end (delta: -149.3MB). Peak memory consumption was 272.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.68ms. Allocated memory is still 513.8MB. Free memory was 209.0MB in the beginning and 282.5MB in the end (delta: -73.5MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.17ms. Allocated memory is still 513.8MB. Free memory was 282.5MB in the beginning and 281.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.68ms. Allocated memory is still 513.8MB. Free memory was 281.4MB in the beginning and 264.6MB in the end (delta: 16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2288.55ms. Allocated memory is still 513.8MB. Free memory was 263.6MB in the beginning and 231.7MB in the end (delta: 31.9MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 18:55:06,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7 --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 aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:55:08,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:55:08,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:55:08,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:55:08,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:55:08,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:55:08,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:55:08,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:55:08,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:55:08,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:55:08,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:55:08,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:55:08,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:55:08,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:55:08,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:55:08,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:55:08,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:55:08,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:55:08,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:55:08,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:55:08,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:55:08,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:55:08,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:55:08,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:55:08,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:55:08,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:55:08,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:55:08,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:55:08,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:55:08,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:55:08,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:55:08,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:55:08,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:55:08,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:55:08,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:55:08,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:55:08,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:55:08,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:55:08,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:55:08,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:55:08,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:55:08,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:55:08,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:55:08,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:55:08,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:55:08,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:55:08,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:55:08,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:55:08,867 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:55:08,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:55:08,867 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:55:08,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:55:08,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:55:08,868 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:55:08,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:55:08,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:55:08,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:55:08,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:55:08,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:55:08,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:55:08,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:55:08,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:55:08,871 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:55:08,871 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:55:08,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:55:08,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:55:08,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:55:08,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:55:08,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:55:08,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:55:08,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:55:08,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:08,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:55:08,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:55:08,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:55:08,874 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:55:08,874 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:55:08,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:55:08,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:55:08,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:55:08,875 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2021-11-25 18:55:09,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:55:09,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:55:09,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:55:09,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:55:09,294 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:55:09,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-11-25 18:55:09,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/a5cbb79e1/383699e476d84a3f8630114eb151f07e/FLAG0e77c6707 [2021-11-25 18:55:09,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:55:09,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-11-25 18:55:09,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/a5cbb79e1/383699e476d84a3f8630114eb151f07e/FLAG0e77c6707 [2021-11-25 18:55:10,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/data/a5cbb79e1/383699e476d84a3f8630114eb151f07e [2021-11-25 18:55:10,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:55:10,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:55:10,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:10,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:55:10,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:55:10,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:10" (1/1) ... [2021-11-25 18:55:10,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20139964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:10, skipping insertion in model container [2021-11-25 18:55:10,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:55:10" (1/1) ... [2021-11-25 18:55:10,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:55:10,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:55:10,444 WARN L230 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-11-25 18:55:10,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:12,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:55:12,770 WARN L230 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_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-11-25 18:55:12,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:55:12,794 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:55:12,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12 WrapperNode [2021-11-25 18:55:12,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:55:12,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:12,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:55:12,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:55:12,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,831 INFO L137 Inliner]: procedures = 19, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2021-11-25 18:55:12,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:55:12,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:55:12,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:55:12,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:55:12,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:55:12,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:55:12,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:55:12,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:55:12,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (1/1) ... [2021-11-25 18:55:12,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:55:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:12,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:55:12,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:55:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:55:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:55:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-25 18:55:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:55:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:55:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:55:13,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:55:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:55:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:55:13,147 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:55:13,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:55:13,339 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:55:13,343 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:55:13,343 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:55:13,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:13 BoogieIcfgContainer [2021-11-25 18:55:13,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:55:13,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:55:13,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:55:13,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:55:13,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:55:10" (1/3) ... [2021-11-25 18:55:13,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3263dbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:13, skipping insertion in model container [2021-11-25 18:55:13,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:55:12" (2/3) ... [2021-11-25 18:55:13,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3263dbf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:55:13, skipping insertion in model container [2021-11-25 18:55:13,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:55:13" (3/3) ... [2021-11-25 18:55:13,352 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2021-11-25 18:55:13,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:55:13,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:55:13,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:55:13,434 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 [2021-11-25 18:55:13,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:55:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-11-25 18:55:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:55:13,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:13,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:13,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000322, now seen corresponding path program 1 times [2021-11-25 18:55:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:55:13,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345526534] [2021-11-25 18:55:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:13,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:55:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:55:13,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:55:13,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:55:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:13,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:55:13,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:13,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:55:13,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:55:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345526534] [2021-11-25 18:55:13,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345526534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:13,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:13,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:55:13,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146877832] [2021-11-25 18:55:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:13,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:55:13,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:55:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:55:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:55:13,653 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-25 18:55:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:13,667 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-11-25 18:55:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:55:13,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-25 18:55:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:13,676 INFO L225 Difference]: With dead ends: 32 [2021-11-25 18:55:13,676 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:55:13,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:55:13,683 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:13,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:55:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:55:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:55:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-25 18:55:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-11-25 18:55:13,713 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2021-11-25 18:55:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:13,713 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-25 18:55:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-25 18:55:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-11-25 18:55:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:55:13,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:13,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:13,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:13,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:55:13,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1807612939, now seen corresponding path program 1 times [2021-11-25 18:55:13,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:55:13,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566644659] [2021-11-25 18:55:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:13,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:55:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:55:13,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:55:13,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:55:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:14,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:55:14,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:55:14,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:55:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566644659] [2021-11-25 18:55:14,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566644659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:55:14,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:55:14,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:55:14,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173963432] [2021-11-25 18:55:14,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:55:14,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:55:14,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:55:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:55:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:55:14,077 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-25 18:55:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:14,134 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 18:55:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:55:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-25 18:55:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:14,145 INFO L225 Difference]: With dead ends: 36 [2021-11-25 18:55:14,145 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 18:55:14,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:55:14,146 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:14,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:55:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 18:55:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2021-11-25 18:55:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-25 18:55:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 18:55:14,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2021-11-25 18:55:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:14,150 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 18:55:14,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-25 18:55:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 18:55:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:55:14,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:14,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:14,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:14,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:55:14,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2006795472, now seen corresponding path program 1 times [2021-11-25 18:55:14,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:55:14,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068561007] [2021-11-25 18:55:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:14,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:55:14,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:55:14,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:55:14,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:55:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:14,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:55:14,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:55:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068561007] [2021-11-25 18:55:14,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068561007] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:14,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [182131954] [2021-11-25 18:55:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:14,528 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:55:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:55:14,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:55:14,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-25 18:55:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:55:14,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [182131954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:14,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236268474] [2021-11-25 18:55:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:55:14,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:14,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:55:14,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:55:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:55:14,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:55:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236268474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:14,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:55:14,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-25 18:55:14,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924049946] [2021-11-25 18:55:14,833 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:55:14,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:55:14,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:55:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:55:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:55:14,835 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-25 18:55:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:14,955 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-11-25 18:55:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:55:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 13 [2021-11-25 18:55:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:14,957 INFO L225 Difference]: With dead ends: 62 [2021-11-25 18:55:14,957 INFO L226 Difference]: Without dead ends: 53 [2021-11-25 18:55:14,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:55:14,959 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:14,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 56 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:55:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-25 18:55:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2021-11-25 18:55:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2021-11-25 18:55:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-25 18:55:14,967 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2021-11-25 18:55:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:14,967 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-25 18:55:14,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-25 18:55:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-25 18:55:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:55:14,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:14,969 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:14,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:15,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:15,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:15,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:15,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash -741908511, now seen corresponding path program 2 times [2021-11-25 18:55:15,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:55:15,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446004654] [2021-11-25 18:55:15,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:55:15,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:55:15,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:55:15,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:55:15,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 18:55:15,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:55:15,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:55:15,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:55:15,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:15,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:16,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:55:16,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446004654] [2021-11-25 18:55:16,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446004654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:16,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1587110106] [2021-11-25 18:55:16,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:55:16,022 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:55:16,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:55:16,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:55:16,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-25 18:55:16,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:55:16,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:55:16,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:55:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:16,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:16,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1587110106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:16,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766606850] [2021-11-25 18:55:16,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:55:16,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:16,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:16,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:55:16,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:55:16,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:55:16,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:55:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:55:16,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:16,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:16,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766606850] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:16,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:55:16,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2021-11-25 18:55:16,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902257734] [2021-11-25 18:55:16,696 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:55:16,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:55:16,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:55:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:55:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:55:16,700 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:55:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:55:17,262 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-11-25 18:55:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:55:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-25 18:55:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:55:17,265 INFO L225 Difference]: With dead ends: 134 [2021-11-25 18:55:17,265 INFO L226 Difference]: Without dead ends: 125 [2021-11-25 18:55:17,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:55:17,267 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 403 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:55:17,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 299 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:55:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-25 18:55:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 52. [2021-11-25 18:55:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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) [2021-11-25 18:55:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-11-25 18:55:17,278 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2021-11-25 18:55:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:55:17,278 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-11-25 18:55:17,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:55:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-11-25 18:55:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 18:55:17,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:55:17,285 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:55:17,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-25 18:55:17,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:17,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:55:17,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:17,887 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:55:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:55:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1207212861, now seen corresponding path program 3 times [2021-11-25 18:55:17,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:55:17,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134232521] [2021-11-25 18:55:17,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:55:17,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:55:17,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:55:17,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:55:17,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 18:55:18,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-25 18:55:18,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:55:18,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 18:55:18,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:18,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:19,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:55:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134232521] [2021-11-25 18:55:19,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134232521] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342139488] [2021-11-25 18:55:19,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:55:19,940 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:55:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:55:19,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:55:19,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-25 18:55:26,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-25 18:55:26,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:55:26,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 18:55:26,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:55:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:27,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:55:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:55:27,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342139488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:55:27,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771346486] [2021-11-25 18:55:27,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:55:27,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:55:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:55:27,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:55:27,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:57:24,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-25 18:57:24,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:57:24,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 18:57:24,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:57:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:24,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:57:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771346486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:57:24,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:57:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13, 14, 13, 14] total 25 [2021-11-25 18:57:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240610719] [2021-11-25 18:57:24,665 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:57:24,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 18:57:24,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:57:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 18:57:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:57:24,667 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 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) [2021-11-25 18:57:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:27,198 INFO L93 Difference]: Finished difference Result 278 states and 359 transitions. [2021-11-25 18:57:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 18:57:27,199 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-25 18:57:27,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:27,202 INFO L225 Difference]: With dead ends: 278 [2021-11-25 18:57:27,202 INFO L226 Difference]: Without dead ends: 269 [2021-11-25 18:57:27,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 18:57:27,206 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1306 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:27,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1336 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:57:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-25 18:57:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 100. [2021-11-25 18:57:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 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) [2021-11-25 18:57:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2021-11-25 18:57:27,222 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 49 [2021-11-25 18:57:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:27,223 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2021-11-25 18:57:27,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 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) [2021-11-25 18:57:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2021-11-25 18:57:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:57:27,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:27,227 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:27,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:57:27,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:57:27,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:57:27,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:57:27,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:57:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 239950983, now seen corresponding path program 4 times [2021-11-25 18:57:27,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:57:27,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363762299] [2021-11-25 18:57:27,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:57:27,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:57:27,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:57:27,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:57:27,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 18:57:28,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:57:28,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:57:28,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:57:28,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:57:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:28,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:57:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:30,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:57:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363762299] [2021-11-25 18:57:30,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363762299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:57:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [240579385] [2021-11-25 18:57:30,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:57:30,486 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:57:30,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:57:30,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:57:30,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-25 18:57:30,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:57:30,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:57:30,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:57:30,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:57:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:31,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:57:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:31,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [240579385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:57:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529203587] [2021-11-25 18:57:31,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:57:31,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:57:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:57:31,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:57:31,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:57:31,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:57:31,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:57:31,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:57:31,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:57:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:32,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:57:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:32,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529203587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:57:32,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:57:32,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 25] total 48 [2021-11-25 18:57:32,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204661264] [2021-11-25 18:57:32,349 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:57:32,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:57:32,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:57:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:57:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 18:57:32,353 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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) [2021-11-25 18:57:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:42,198 INFO L93 Difference]: Finished difference Result 566 states and 731 transitions. [2021-11-25 18:57:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:57:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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 97 [2021-11-25 18:57:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:42,204 INFO L225 Difference]: With dead ends: 566 [2021-11-25 18:57:42,204 INFO L226 Difference]: Without dead ends: 557 [2021-11-25 18:57:42,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2021-11-25 18:57:42,208 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 6131 mSDsluCounter, 5303 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 5537 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:42,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6131 Valid, 5537 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:57:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-25 18:57:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 196. [2021-11-25 18:57:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 195 states have internal predecessors, (245), 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) [2021-11-25 18:57:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2021-11-25 18:57:42,230 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 97 [2021-11-25 18:57:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2021-11-25 18:57:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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) [2021-11-25 18:57:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2021-11-25 18:57:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-25 18:57:42,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:42,236 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:42,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:57:42,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:57:42,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-25 18:57:42,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:57:42,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:57:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1120861169, now seen corresponding path program 5 times [2021-11-25 18:57:42,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:57:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757375363] [2021-11-25 18:57:42,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 18:57:42,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:57:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:57:42,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:57:42,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 18:57:53,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-25 18:57:53,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:57:53,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-25 18:57:53,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:57:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:55,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:58:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:02,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:58:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757375363] [2021-11-25 18:58:02,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757375363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:58:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2002644362] [2021-11-25 18:58:02,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 18:58:02,631 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:58:02,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:58:02,632 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:58:02,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a5956d-ae3e-4dbe-b8c8-50c9040d2f09/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process