./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem102_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl --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 27952e240b8855f5bd05db98239b64449ccb4711b9f561be3def90c36da78aab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:01,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:01,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:01,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:01,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:01,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:01,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:01,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:01,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:01,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:01,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:01,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:01,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:01,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:01,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:01,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:01,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:01,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:01,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:01,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:01,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:01,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:01,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:01,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:01,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:01,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:01,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:01,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:01,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:01,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:01,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:01,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:01,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:01,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:01,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:01,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:01,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:01,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:01,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:01,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:01,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:01,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:02:01,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:01,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:01,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:01,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:01,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:01,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:01,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:01,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:01,566 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:01,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:02:01,567 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:01,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:01,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:02:01,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:02:01,568 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:01,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:02:01,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:02:01,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:02:01,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:01,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:01,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:02:01,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:01,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:01,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:02:01,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:01,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:02:01,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:01,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:02:01,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:01,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:02:01,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:01,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:01,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:01,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:01,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:01,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:01,577 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27952e240b8855f5bd05db98239b64449ccb4711b9f561be3def90c36da78aab [2021-11-23 17:02:01,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:01,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:01,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:01,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:01,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:01,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label02.c [2021-11-23 17:02:01,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/e02c8919b/34f94d4104984bfca3a6778d92323948/FLAG357b0a572 [2021-11-23 17:02:06,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:06,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c [2021-11-23 17:02:06,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/e02c8919b/34f94d4104984bfca3a6778d92323948/FLAG357b0a572 [2021-11-23 17:02:06,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/e02c8919b/34f94d4104984bfca3a6778d92323948 [2021-11-23 17:02:06,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:06,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:06,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:06,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:06,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:06,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:06" (1/1) ... [2021-11-23 17:02:06,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aaa5635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:06, skipping insertion in model container [2021-11-23 17:02:06,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:06" (1/1) ... [2021-11-23 17:02:06,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:08,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:35,059 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c[5707504,5707517] [2021-11-23 17:02:35,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:35,210 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:49,064 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c[5707504,5707517] [2021-11-23 17:02:49,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:54,530 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:54,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54 WrapperNode [2021-11-23 17:02:54,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:54,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:54,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:54,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:54,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:02:56,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:02,004 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184295 [2021-11-23 17:03:02,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:02,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:03:02,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:03:02,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:03:02,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:02,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:03,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:03,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:06,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:07,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:07,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:08,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:03:08,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:03:08,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:03:08,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:03:08,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:54" (1/1) ... [2021-11-23 17:03:08,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:08,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:03:08,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:03:08,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:03:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:03:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:03:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:03:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:03:08,888 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:03:08,890 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:04:17,236 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:04:17,465 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) [2021-11-23 17:04:17,471 INFO L158 Benchmark]: Toolchain (without parser) took 130672.77ms. Allocated memory was 507.5MB in the beginning and 11.9GB in the end (delta: 11.4GB). Free memory was 224.2MB in the beginning and 8.1GB in the end (delta: -7.9GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2021-11-23 17:04:17,471 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:04:17,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 47734.13ms. Allocated memory was 507.5MB in the beginning and 5.1GB in the end (delta: 4.6GB). Free memory was 223.7MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2021-11-23 17:04:17,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 7473.11ms. Allocated memory was 5.1GB in the beginning and 7.8GB in the end (delta: 2.6GB). Free memory was 3.1GB in the beginning and 5.1GB in the end (delta: -2.0GB). Peak memory consumption was 756.0MB. Max. memory is 16.1GB. [2021-11-23 17:04:17,477 INFO L158 Benchmark]: Boogie Preprocessor took 6585.65ms. Allocated memory was 7.8GB in the beginning and 10.5GB in the end (delta: 2.7GB). Free memory was 5.1GB in the beginning and 7.3GB in the end (delta: -2.2GB). Peak memory consumption was 531.6MB. Max. memory is 16.1GB. [2021-11-23 17:04:17,478 INFO L158 Benchmark]: RCFGBuilder took 68875.39ms. Allocated memory was 10.5GB in the beginning and 11.9GB in the end (delta: 1.4GB). Free memory was 7.3GB in the beginning and 8.1GB in the end (delta: -796.9MB). Peak memory consumption was 881.9MB. Max. memory is 16.1GB. [2021-11-23 17:04:17,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 47734.13ms. Allocated memory was 507.5MB in the beginning and 5.1GB in the end (delta: 4.6GB). Free memory was 223.7MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 7473.11ms. Allocated memory was 5.1GB in the beginning and 7.8GB in the end (delta: 2.6GB). Free memory was 3.1GB in the beginning and 5.1GB in the end (delta: -2.0GB). Peak memory consumption was 756.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 6585.65ms. Allocated memory was 7.8GB in the beginning and 10.5GB in the end (delta: 2.7GB). Free memory was 5.1GB in the beginning and 7.3GB in the end (delta: -2.2GB). Peak memory consumption was 531.6MB. Max. memory is 16.1GB. * RCFGBuilder took 68875.39ms. Allocated memory was 10.5GB in the beginning and 11.9GB in the end (delta: 1.4GB). Free memory was 7.3GB in the beginning and 8.1GB in the end (delta: -796.9MB). Peak memory consumption was 881.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:04:17,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl --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 27952e240b8855f5bd05db98239b64449ccb4711b9f561be3def90c36da78aab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:04:20,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:04:20,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:04:20,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:04:20,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:04:20,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:04:20,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:04:20,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:04:20,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:04:20,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:04:20,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:04:20,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:04:20,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:04:20,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:04:20,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:04:20,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:04:20,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:04:20,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:04:20,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:04:20,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:04:20,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:04:20,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:04:20,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:04:20,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:04:20,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:04:20,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:04:20,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:04:20,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:04:20,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:04:20,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:04:20,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:04:20,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:04:20,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:04:20,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:04:20,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:04:20,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:04:20,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:04:20,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:04:20,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:04:20,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:04:20,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:04:20,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:04:20,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:04:20,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:04:20,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:04:20,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:04:20,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:04:20,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:04:20,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:04:20,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:04:20,546 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:04:20,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:04:20,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:04:20,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:04:20,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:04:20,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:04:20,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:04:20,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:04:20,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:04:20,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:04:20,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:04:20,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:04:20,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:04:20,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:04:20,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:04:20,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:04:20,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:04:20,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:04:20,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:04:20,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:04:20,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:04:20,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:20,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:04:20,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:04:20,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:04:20,560 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:04:20,560 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:04:20,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:04:20,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:04:20,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:04:20,563 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27952e240b8855f5bd05db98239b64449ccb4711b9f561be3def90c36da78aab [2021-11-23 17:04:20,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:04:21,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:04:21,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:04:21,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:04:21,021 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:04:21,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label02.c [2021-11-23 17:04:21,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/868c41710/efe84f9c843642338d930f9c8f637409/FLAGa15770568 [2021-11-23 17:04:26,069 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:04:26,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c [2021-11-23 17:04:26,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/868c41710/efe84f9c843642338d930f9c8f637409/FLAGa15770568 [2021-11-23 17:04:26,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/data/868c41710/efe84f9c843642338d930f9c8f637409 [2021-11-23 17:04:26,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:04:26,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:04:26,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:26,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:04:26,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:04:26,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:26" (1/1) ... [2021-11-23 17:04:26,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b9734b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:26, skipping insertion in model container [2021-11-23 17:04:26,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:26" (1/1) ... [2021-11-23 17:04:26,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:04:28,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:04:55,084 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c[5707504,5707517] [2021-11-23 17:04:55,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:55,226 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:05:08,863 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_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/sv-benchmarks/c/eca-programs/Problem102_label02.c[5707504,5707517] [2021-11-23 17:05:08,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:13,564 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:05:13,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13 WrapperNode [2021-11-23 17:05:13,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:13,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:13,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:05:13,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:05:13,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:15,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:20,188 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184212 [2021-11-23 17:05:20,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:20,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:05:20,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:05:20,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:05:20,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:20,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:21,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:21,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:24,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:24,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:25,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:26,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:05:26,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:05:26,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:05:26,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:05:26,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (1/1) ... [2021-11-23 17:05:26,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:26,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:05:26,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:05:26,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:05:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:05:26,937 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:05:26,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:07:00,876 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:07:00,982 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:07:00,983 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:07:01,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:07:01 BoogieIcfgContainer [2021-11-23 17:07:01,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:07:01,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:07:01,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:07:01,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:07:01,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:04:26" (1/3) ... [2021-11-23 17:07:01,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd07bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:07:01, skipping insertion in model container [2021-11-23 17:07:01,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:13" (2/3) ... [2021-11-23 17:07:01,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd07bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:07:01, skipping insertion in model container [2021-11-23 17:07:01,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:07:01" (3/3) ... [2021-11-23 17:07:01,015 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem102_label02.c [2021-11-23 17:07:01,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:07:01,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:07:01,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:07:01,371 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 [2021-11-23 17:07:01,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:07:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 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) [2021-11-23 17:07:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17864 [2021-11-23 17:07:04,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:07:04,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:07:04,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:07:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:07:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 952433190, now seen corresponding path program 1 times [2021-11-23 17:07:04,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:07:04,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396847889] [2021-11-23 17:07:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:07:04,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:07:04,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:07:04,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:07:04,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:07:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:07:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 18080 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:07:12,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:12,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:08:12,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:12,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396847889] [2021-11-23 17:08:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396847889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:08:12,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:08:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:08:12,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146858822] [2021-11-23 17:08:12,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:08:12,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:08:12,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:08:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:08:12,952 INFO L87 Difference]: Start difference. First operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 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 5954.333333333333) internal successors, (17863), 2 states have internal predecessors, (17863), 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) [2021-11-23 17:10:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:10:03,760 INFO L93 Difference]: Finished difference Result 67301 states and 127554 transitions. [2021-11-23 17:10:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:10:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5954.333333333333) internal successors, (17863), 2 states have internal predecessors, (17863), 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 17863 [2021-11-23 17:10:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:10:04,031 INFO L225 Difference]: With dead ends: 67301 [2021-11-23 17:10:04,032 INFO L226 Difference]: Without dead ends: 44001 [2021-11-23 17:10:04,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17862 GetRequests, 17861 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:10:04,072 INFO L933 BasicCegarLoop]: 16961 mSDtfsCounter, 7037 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 61858 mSolverCounterSat, 13314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7037 SdHoareTripleChecker+Valid, 21595 SdHoareTripleChecker+Invalid, 75172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13314 IncrementalHoareTripleChecker+Valid, 61858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:10:04,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7037 Valid, 21595 Invalid, 75172 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13314 Valid, 61858 Invalid, 0 Unknown, 0 Unchecked, 108.8s Time] [2021-11-23 17:10:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44001 states. [2021-11-23 17:10:05,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44001 to 43529. [2021-11-23 17:10:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43528 states have (on average 1.7010889542363536) internal successors, (74045), 43528 states have internal predecessors, (74045), 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) [2021-11-23 17:10:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 74045 transitions. [2021-11-23 17:10:05,678 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 74045 transitions. Word has length 17863 [2021-11-23 17:10:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:10:05,713 INFO L470 AbstractCegarLoop]: Abstraction has 43529 states and 74045 transitions. [2021-11-23 17:10:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5954.333333333333) internal successors, (17863), 2 states have internal predecessors, (17863), 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) [2021-11-23 17:10:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 74045 transitions. [2021-11-23 17:10:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17869 [2021-11-23 17:10:08,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:10:08,143 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:10:08,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:10:08,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:10:08,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:10:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:10:08,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1229782715, now seen corresponding path program 1 times [2021-11-23 17:10:08,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:10:08,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446258779] [2021-11-23 17:10:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:10:08,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:10:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:10:08,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:10:08,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2fe5c0-f226-4c3a-a14c-ed6f92cee7c7/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:10:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:10:14,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 18113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:10:15,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:10:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:10:34,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:10:34,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:10:34,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446258779] [2021-11-23 17:10:34,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446258779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:10:34,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:10:34,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:10:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337929439] [2021-11-23 17:10:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:10:34,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:10:34,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:10:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:10:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:10:34,382 INFO L87 Difference]: Start difference. First operand 43529 states and 74045 transitions. Second operand has 3 states, 3 states have (on average 5956.0) internal successors, (17868), 2 states have internal predecessors, (17868), 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) [2021-11-23 17:12:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:12:21,260 INFO L93 Difference]: Finished difference Result 125812 states and 215758 transitions. [2021-11-23 17:12:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:12:21,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5956.0) internal successors, (17868), 2 states have internal predecessors, (17868), 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 17868 [2021-11-23 17:12:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:12:21,460 INFO L225 Difference]: With dead ends: 125812 [2021-11-23 17:12:21,460 INFO L226 Difference]: Without dead ends: 82285 [2021-11-23 17:12:21,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17867 GetRequests, 17866 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:12:21,514 INFO L933 BasicCegarLoop]: 12342 mSDtfsCounter, 24875 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 59606 mSolverCounterSat, 22326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24875 SdHoareTripleChecker+Valid, 14811 SdHoareTripleChecker+Invalid, 81932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 22326 IncrementalHoareTripleChecker+Valid, 59606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:12:21,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24875 Valid, 14811 Invalid, 81932 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [22326 Valid, 59606 Invalid, 0 Unknown, 0 Unchecked, 105.0s Time] [2021-11-23 17:12:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82285 states. [2021-11-23 17:12:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82285 to 80660. [2021-11-23 17:12:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80660 states, 80659 states have (on average 1.6362836137318837) internal successors, (131981), 80659 states have internal predecessors, (131981), 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) [2021-11-23 17:12:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80660 states to 80660 states and 131981 transitions. [2021-11-23 17:12:23,250 INFO L78 Accepts]: Start accepts. Automaton has 80660 states and 131981 transitions. Word has length 17868 [2021-11-23 17:12:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:12:23,255 INFO L470 AbstractCegarLoop]: Abstraction has 80660 states and 131981 transitions. [2021-11-23 17:12:23,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5956.0) internal successors, (17868), 2 states have internal predecessors, (17868), 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) [2021-11-23 17:12:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 80660 states and 131981 transitions.