./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.04.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs --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 3723db60962369c4b10118802934116c8cea6114 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:54:16,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:54:16,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:54:16,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:54:16,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:54:16,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:54:16,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:54:16,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:54:16,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:54:16,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:54:16,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:54:16,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:54:16,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:54:16,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:54:16,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:54:16,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:54:16,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:54:16,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:54:16,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:54:16,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:54:16,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:54:16,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:54:16,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:54:16,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:54:16,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:54:16,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:54:16,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:54:16,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:54:16,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:54:16,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:54:16,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:54:16,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:54:16,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:54:16,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:54:16,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:54:16,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:54:16,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:54:16,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:54:16,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:54:16,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:54:16,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:54:16,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:54:16,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:54:16,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:54:16,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:54:16,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:54:16,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:54:16,627 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:54:16,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:54:16,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:54:16,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:54:16,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:54:16,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:54:16,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:54:16,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:54:16,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:54:16,630 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:54:16,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:54:16,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:54:16,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:54:16,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:54:16,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:54:16,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:54:16,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:54:16,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:54:16,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:54:16,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:54:16,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:54:16,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:54:16,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:54:16,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:54:16,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:54:16,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:54:16,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:54:16,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:54:16,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:54:16,639 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:54:16,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:54:16,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:54:16,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:54:16,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:54:16,641 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_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3723db60962369c4b10118802934116c8cea6114 [2021-10-16 02:54:16,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:54:16,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:54:16,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:54:16,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:54:16,914 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:54:16,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/systemc/transmitter.04.cil.c [2021-10-16 02:54:16,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/data/af87ff442/03d63ec0cd444044ab8be6061ff1b6c3/FLAGbc1e9f27f [2021-10-16 02:54:17,441 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:54:17,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/sv-benchmarks/c/systemc/transmitter.04.cil.c [2021-10-16 02:54:17,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/data/af87ff442/03d63ec0cd444044ab8be6061ff1b6c3/FLAGbc1e9f27f [2021-10-16 02:54:17,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/data/af87ff442/03d63ec0cd444044ab8be6061ff1b6c3 [2021-10-16 02:54:17,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:54:17,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:54:17,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:17,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:54:17,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:54:17,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:17" (1/1) ... [2021-10-16 02:54:17,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783c02aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:17, skipping insertion in model container [2021-10-16 02:54:17,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:54:17" (1/1) ... [2021-10-16 02:54:17,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:54:17,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:54:18,074 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/sv-benchmarks/c/systemc/transmitter.04.cil.c[401,414] [2021-10-16 02:54:18,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:18,158 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:54:18,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/sv-benchmarks/c/systemc/transmitter.04.cil.c[401,414] [2021-10-16 02:54:18,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:54:18,281 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:54:18,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18 WrapperNode [2021-10-16 02:54:18,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:54:18,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:54:18,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:54:18,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:54:18,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:54:18,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:54:18,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:54:18,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:54:18,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:54:18,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:54:18,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:54:18,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:54:18,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (1/1) ... [2021-10-16 02:54:18,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:54:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:54:18,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:54:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:54:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:54:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:54:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:54:18,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:54:20,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:54:20,666 INFO L299 CfgBuilder]: Removed 148 assume(true) statements. [2021-10-16 02:54:20,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:20 BoogieIcfgContainer [2021-10-16 02:54:20,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:54:20,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:54:20,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:54:20,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:54:20,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:54:17" (1/3) ... [2021-10-16 02:54:20,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4c9219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:54:20, skipping insertion in model container [2021-10-16 02:54:20,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:54:18" (2/3) ... [2021-10-16 02:54:20,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4c9219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:54:20, skipping insertion in model container [2021-10-16 02:54:20,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:20" (3/3) ... [2021-10-16 02:54:20,688 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2021-10-16 02:54:20,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:54:20,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:54:20,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:54:20,771 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, mConcurrency=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 [2021-10-16 02:54:20,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:54:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 176 states have (on average 1.5568181818181819) internal successors, (274), 177 states have internal predecessors, (274), 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) [2021-10-16 02:54:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:54:20,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:20,801 INFO L512 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] [2021-10-16 02:54:20,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:20,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1562977161, now seen corresponding path program 1 times [2021-10-16 02:54:20,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:20,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346884184] [2021-10-16 02:54:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:20,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:20,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:20,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346884184] [2021-10-16 02:54:20,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346884184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:20,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:20,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:54:20,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739166020] [2021-10-16 02:54:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:20,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:21,011 INFO L87 Difference]: Start difference. First operand has 178 states, 176 states have (on average 1.5568181818181819) internal successors, (274), 177 states have internal predecessors, (274), 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 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:21,108 INFO L93 Difference]: Finished difference Result 481 states and 740 transitions. [2021-10-16 02:54:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-10-16 02:54:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:21,125 INFO L225 Difference]: With dead ends: 481 [2021-10-16 02:54:21,125 INFO L226 Difference]: Without dead ends: 305 [2021-10-16 02:54:21,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:21,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-16 02:54:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2021-10-16 02:54:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.5016611295681064) internal successors, (452), 301 states have internal predecessors, (452), 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) [2021-10-16 02:54:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 452 transitions. [2021-10-16 02:54:21,218 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 452 transitions. Word has length 28 [2021-10-16 02:54:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:21,219 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 452 transitions. [2021-10-16 02:54:21,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 452 transitions. [2021-10-16 02:54:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:54:21,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:21,221 INFO L512 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] [2021-10-16 02:54:21,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:54:21,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1141595158, now seen corresponding path program 1 times [2021-10-16 02:54:21,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:21,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503899115] [2021-10-16 02:54:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:21,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:21,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:21,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503899115] [2021-10-16 02:54:21,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503899115] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:21,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:21,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:21,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512770551] [2021-10-16 02:54:21,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:21,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:21,298 INFO L87 Difference]: Start difference. First operand 302 states and 452 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:21,454 INFO L93 Difference]: Finished difference Result 1071 states and 1593 transitions. [2021-10-16 02:54:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:21,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-16 02:54:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:21,461 INFO L225 Difference]: With dead ends: 1071 [2021-10-16 02:54:21,461 INFO L226 Difference]: Without dead ends: 771 [2021-10-16 02:54:21,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:54:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-10-16 02:54:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 712. [2021-10-16 02:54:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.4571026722925458) internal successors, (1036), 711 states have internal predecessors, (1036), 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) [2021-10-16 02:54:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1036 transitions. [2021-10-16 02:54:21,513 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1036 transitions. Word has length 28 [2021-10-16 02:54:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:21,513 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1036 transitions. [2021-10-16 02:54:21,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1036 transitions. [2021-10-16 02:54:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:54:21,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:21,515 INFO L512 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] [2021-10-16 02:54:21,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:54:21,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2013020427, now seen corresponding path program 1 times [2021-10-16 02:54:21,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:21,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974149795] [2021-10-16 02:54:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:21,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:21,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:21,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974149795] [2021-10-16 02:54:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974149795] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:21,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:21,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199841581] [2021-10-16 02:54:21,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:21,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:21,628 INFO L87 Difference]: Start difference. First operand 712 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:21,773 INFO L93 Difference]: Finished difference Result 2003 states and 2930 transitions. [2021-10-16 02:54:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:21,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-16 02:54:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:21,784 INFO L225 Difference]: With dead ends: 2003 [2021-10-16 02:54:21,785 INFO L226 Difference]: Without dead ends: 1309 [2021-10-16 02:54:21,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-10-16 02:54:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1025. [2021-10-16 02:54:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 1.4609375) internal successors, (1496), 1024 states have internal predecessors, (1496), 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) [2021-10-16 02:54:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1496 transitions. [2021-10-16 02:54:21,843 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1496 transitions. Word has length 28 [2021-10-16 02:54:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:21,844 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1496 transitions. [2021-10-16 02:54:21,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-16 02:54:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1496 transitions. [2021-10-16 02:54:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:54:21,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:21,848 INFO L512 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] [2021-10-16 02:54:21,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:54:21,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1481947965, now seen corresponding path program 1 times [2021-10-16 02:54:21,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:21,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800253463] [2021-10-16 02:54:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:21,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:21,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:21,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800253463] [2021-10-16 02:54:21,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800253463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:21,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:21,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:54:21,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882038472] [2021-10-16 02:54:21,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:21,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:21,929 INFO L87 Difference]: Start difference. First operand 1025 states and 1496 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-10-16 02:54:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:22,030 INFO L93 Difference]: Finished difference Result 2991 states and 4349 transitions. [2021-10-16 02:54:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-10-16 02:54:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:22,043 INFO L225 Difference]: With dead ends: 2991 [2021-10-16 02:54:22,043 INFO L226 Difference]: Without dead ends: 1981 [2021-10-16 02:54:22,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-10-16 02:54:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1972. [2021-10-16 02:54:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1971 states have (on average 1.4271943176052766) internal successors, (2813), 1971 states have internal predecessors, (2813), 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) [2021-10-16 02:54:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2813 transitions. [2021-10-16 02:54:22,147 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2813 transitions. Word has length 29 [2021-10-16 02:54:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:22,148 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 2813 transitions. [2021-10-16 02:54:22,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-10-16 02:54:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2813 transitions. [2021-10-16 02:54:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:54:22,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:22,152 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:22,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:54:22,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 65734536, now seen corresponding path program 1 times [2021-10-16 02:54:22,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:22,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102807734] [2021-10-16 02:54:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:22,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:22,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:22,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102807734] [2021-10-16 02:54:22,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102807734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:22,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:22,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:22,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312337056] [2021-10-16 02:54:22,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:22,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,211 INFO L87 Difference]: Start difference. First operand 1972 states and 2813 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-10-16 02:54:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:22,345 INFO L93 Difference]: Finished difference Result 3744 states and 5418 transitions. [2021-10-16 02:54:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:22,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-10-16 02:54:22,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:22,361 INFO L225 Difference]: With dead ends: 3744 [2021-10-16 02:54:22,362 INFO L226 Difference]: Without dead ends: 2737 [2021-10-16 02:54:22,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-10-16 02:54:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2143. [2021-10-16 02:54:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 1.4491129785247432) internal successors, (3104), 2142 states have internal predecessors, (3104), 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) [2021-10-16 02:54:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3104 transitions. [2021-10-16 02:54:22,509 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3104 transitions. Word has length 40 [2021-10-16 02:54:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 2143 states and 3104 transitions. [2021-10-16 02:54:22,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-10-16 02:54:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3104 transitions. [2021-10-16 02:54:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-16 02:54:22,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:22,518 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-10-16 02:54:22,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:54:22,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1652373574, now seen corresponding path program 1 times [2021-10-16 02:54:22,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:22,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176718748] [2021-10-16 02:54:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:22,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:22,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:22,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176718748] [2021-10-16 02:54:22,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176718748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:22,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:22,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:22,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416980045] [2021-10-16 02:54:22,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:22,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,600 INFO L87 Difference]: Start difference. First operand 2143 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-16 02:54:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:22,743 INFO L93 Difference]: Finished difference Result 4965 states and 7303 transitions. [2021-10-16 02:54:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:22,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-16 02:54:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:22,776 INFO L225 Difference]: With dead ends: 4965 [2021-10-16 02:54:22,777 INFO L226 Difference]: Without dead ends: 2839 [2021-10-16 02:54:22,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-10-16 02:54:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2629. [2021-10-16 02:54:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2628 states have (on average 1.4893455098934552) internal successors, (3914), 2628 states have internal predecessors, (3914), 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) [2021-10-16 02:54:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 3914 transitions. [2021-10-16 02:54:22,930 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 3914 transitions. Word has length 59 [2021-10-16 02:54:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:22,931 INFO L470 AbstractCegarLoop]: Abstraction has 2629 states and 3914 transitions. [2021-10-16 02:54:22,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-16 02:54:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 3914 transitions. [2021-10-16 02:54:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-16 02:54:22,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:22,938 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-10-16 02:54:22,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:54:22,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1831223825, now seen corresponding path program 1 times [2021-10-16 02:54:22,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:22,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788607334] [2021-10-16 02:54:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:22,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:22,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:22,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788607334] [2021-10-16 02:54:22,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788607334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:22,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:22,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:22,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122494671] [2021-10-16 02:54:22,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:22,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:22,996 INFO L87 Difference]: Start difference. First operand 2629 states and 3914 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-16 02:54:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:23,210 INFO L93 Difference]: Finished difference Result 6636 states and 9997 transitions. [2021-10-16 02:54:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:23,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-16 02:54:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:23,234 INFO L225 Difference]: With dead ends: 6636 [2021-10-16 02:54:23,234 INFO L226 Difference]: Without dead ends: 4024 [2021-10-16 02:54:23,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-10-16 02:54:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3466. [2021-10-16 02:54:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3465 states have (on average 1.5217893217893217) internal successors, (5273), 3465 states have internal predecessors, (5273), 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) [2021-10-16 02:54:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5273 transitions. [2021-10-16 02:54:23,430 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5273 transitions. Word has length 59 [2021-10-16 02:54:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:23,431 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5273 transitions. [2021-10-16 02:54:23,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-16 02:54:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5273 transitions. [2021-10-16 02:54:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:54:23,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:23,439 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:23,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:54:23,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 200151229, now seen corresponding path program 1 times [2021-10-16 02:54:23,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:23,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670528038] [2021-10-16 02:54:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:23,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:23,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:23,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670528038] [2021-10-16 02:54:23,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670528038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:23,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:23,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:23,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210895973] [2021-10-16 02:54:23,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:23,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:23,552 INFO L87 Difference]: Start difference. First operand 3466 states and 5273 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:23,735 INFO L93 Difference]: Finished difference Result 5526 states and 8484 transitions. [2021-10-16 02:54:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-16 02:54:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:23,756 INFO L225 Difference]: With dead ends: 5526 [2021-10-16 02:54:23,757 INFO L226 Difference]: Without dead ends: 3466 [2021-10-16 02:54:23,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2021-10-16 02:54:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3396. [2021-10-16 02:54:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 1.4998527245949926) internal successors, (5092), 3395 states have internal predecessors, (5092), 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) [2021-10-16 02:54:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5092 transitions. [2021-10-16 02:54:23,972 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5092 transitions. Word has length 60 [2021-10-16 02:54:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:23,973 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 5092 transitions. [2021-10-16 02:54:23,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5092 transitions. [2021-10-16 02:54:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 02:54:23,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:23,980 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:23,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:54:23,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1479475964, now seen corresponding path program 1 times [2021-10-16 02:54:23,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:23,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090290102] [2021-10-16 02:54:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:23,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:54:24,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:24,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090290102] [2021-10-16 02:54:24,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090290102] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:24,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:24,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:24,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054484605] [2021-10-16 02:54:24,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:24,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:24,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:24,067 INFO L87 Difference]: Start difference. First operand 3396 states and 5092 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-10-16 02:54:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:24,230 INFO L93 Difference]: Finished difference Result 4795 states and 7183 transitions. [2021-10-16 02:54:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-16 02:54:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:24,257 INFO L225 Difference]: With dead ends: 4795 [2021-10-16 02:54:24,257 INFO L226 Difference]: Without dead ends: 3399 [2021-10-16 02:54:24,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2021-10-16 02:54:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3396. [2021-10-16 02:54:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 1.4892488954344625) internal successors, (5056), 3395 states have internal predecessors, (5056), 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) [2021-10-16 02:54:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5056 transitions. [2021-10-16 02:54:24,525 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5056 transitions. Word has length 60 [2021-10-16 02:54:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:24,526 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 5056 transitions. [2021-10-16 02:54:24,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-10-16 02:54:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5056 transitions. [2021-10-16 02:54:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-16 02:54:24,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:24,537 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:54:24,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:24,539 INFO L82 PathProgramCache]: Analyzing trace with hash -842990924, now seen corresponding path program 1 times [2021-10-16 02:54:24,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:24,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780836190] [2021-10-16 02:54:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:24,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:24,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:24,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780836190] [2021-10-16 02:54:24,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780836190] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:24,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:24,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:54:24,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185488433] [2021-10-16 02:54:24,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:24,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:24,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:24,632 INFO L87 Difference]: Start difference. First operand 3396 states and 5056 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:24,916 INFO L93 Difference]: Finished difference Result 6255 states and 9209 transitions. [2021-10-16 02:54:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-16 02:54:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:24,946 INFO L225 Difference]: With dead ends: 6255 [2021-10-16 02:54:24,947 INFO L226 Difference]: Without dead ends: 4859 [2021-10-16 02:54:24,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2021-10-16 02:54:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 3824. [2021-10-16 02:54:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 1.4546167930944285) internal successors, (5561), 3823 states have internal predecessors, (5561), 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) [2021-10-16 02:54:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5561 transitions. [2021-10-16 02:54:25,193 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5561 transitions. Word has length 61 [2021-10-16 02:54:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:25,193 INFO L470 AbstractCegarLoop]: Abstraction has 3824 states and 5561 transitions. [2021-10-16 02:54:25,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5561 transitions. [2021-10-16 02:54:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-16 02:54:25,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:25,201 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:25,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:54:25,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash 915840223, now seen corresponding path program 1 times [2021-10-16 02:54:25,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:25,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158049949] [2021-10-16 02:54:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:25,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:25,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:25,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158049949] [2021-10-16 02:54:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158049949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:25,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331036565] [2021-10-16 02:54:25,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:25,240 INFO L87 Difference]: Start difference. First operand 3824 states and 5561 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:25,443 INFO L93 Difference]: Finished difference Result 7970 states and 11703 transitions. [2021-10-16 02:54:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-16 02:54:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:25,458 INFO L225 Difference]: With dead ends: 7970 [2021-10-16 02:54:25,459 INFO L226 Difference]: Without dead ends: 4905 [2021-10-16 02:54:25,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2021-10-16 02:54:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4352. [2021-10-16 02:54:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 1.4683980694093313) internal successors, (6389), 4351 states have internal predecessors, (6389), 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) [2021-10-16 02:54:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 6389 transitions. [2021-10-16 02:54:25,716 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 6389 transitions. Word has length 62 [2021-10-16 02:54:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:25,717 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 6389 transitions. [2021-10-16 02:54:25,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 6389 transitions. [2021-10-16 02:54:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 02:54:25,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:25,727 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:25,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:54:25,727 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1649650490, now seen corresponding path program 1 times [2021-10-16 02:54:25,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:25,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74349305] [2021-10-16 02:54:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:25,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:54:25,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:25,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74349305] [2021-10-16 02:54:25,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74349305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:25,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:25,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:25,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633637885] [2021-10-16 02:54:25,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:25,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:25,788 INFO L87 Difference]: Start difference. First operand 4352 states and 6389 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:26,091 INFO L93 Difference]: Finished difference Result 8551 states and 12483 transitions. [2021-10-16 02:54:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-16 02:54:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:26,105 INFO L225 Difference]: With dead ends: 8551 [2021-10-16 02:54:26,105 INFO L226 Difference]: Without dead ends: 4958 [2021-10-16 02:54:26,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2021-10-16 02:54:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4352. [2021-10-16 02:54:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 1.456676626062974) internal successors, (6338), 4351 states have internal predecessors, (6338), 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) [2021-10-16 02:54:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 6338 transitions. [2021-10-16 02:54:26,387 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 6338 transitions. Word has length 83 [2021-10-16 02:54:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:26,388 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 6338 transitions. [2021-10-16 02:54:26,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 6338 transitions. [2021-10-16 02:54:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 02:54:26,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:26,398 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:26,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 02:54:26,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:26,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:26,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1671827847, now seen corresponding path program 1 times [2021-10-16 02:54:26,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:26,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665164066] [2021-10-16 02:54:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:26,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:54:26,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:26,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665164066] [2021-10-16 02:54:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665164066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:26,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:26,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:26,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824519403] [2021-10-16 02:54:26,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:26,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:26,447 INFO L87 Difference]: Start difference. First operand 4352 states and 6338 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-10-16 02:54:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:26,799 INFO L93 Difference]: Finished difference Result 11379 states and 16687 transitions. [2021-10-16 02:54:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2021-10-16 02:54:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:26,819 INFO L225 Difference]: With dead ends: 11379 [2021-10-16 02:54:26,819 INFO L226 Difference]: Without dead ends: 7786 [2021-10-16 02:54:26,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7786 states. [2021-10-16 02:54:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7786 to 7461. [2021-10-16 02:54:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 7460 states have (on average 1.4513404825737266) internal successors, (10827), 7460 states have internal predecessors, (10827), 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) [2021-10-16 02:54:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 10827 transitions. [2021-10-16 02:54:27,204 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 10827 transitions. Word has length 83 [2021-10-16 02:54:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:27,204 INFO L470 AbstractCegarLoop]: Abstraction has 7461 states and 10827 transitions. [2021-10-16 02:54:27,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-10-16 02:54:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 10827 transitions. [2021-10-16 02:54:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 02:54:27,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:27,218 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:27,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 02:54:27,219 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1936393939, now seen corresponding path program 1 times [2021-10-16 02:54:27,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:27,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070465445] [2021-10-16 02:54:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:27,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:54:27,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:27,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070465445] [2021-10-16 02:54:27,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070465445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:27,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:27,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:54:27,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418552731] [2021-10-16 02:54:27,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:27,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:27,258 INFO L87 Difference]: Start difference. First operand 7461 states and 10827 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:27,767 INFO L93 Difference]: Finished difference Result 21340 states and 30986 transitions. [2021-10-16 02:54:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:27,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-16 02:54:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:27,807 INFO L225 Difference]: With dead ends: 21340 [2021-10-16 02:54:27,807 INFO L226 Difference]: Without dead ends: 13887 [2021-10-16 02:54:27,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2021-10-16 02:54:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 13763. [2021-10-16 02:54:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13763 states, 13762 states have (on average 1.4380177299811074) internal successors, (19790), 13762 states have internal predecessors, (19790), 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) [2021-10-16 02:54:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13763 states to 13763 states and 19790 transitions. [2021-10-16 02:54:28,664 INFO L78 Accepts]: Start accepts. Automaton has 13763 states and 19790 transitions. Word has length 83 [2021-10-16 02:54:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:28,665 INFO L470 AbstractCegarLoop]: Abstraction has 13763 states and 19790 transitions. [2021-10-16 02:54:28,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:54:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 13763 states and 19790 transitions. [2021-10-16 02:54:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 02:54:28,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:28,693 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 02:54:28,693 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:28,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1132087261, now seen corresponding path program 1 times [2021-10-16 02:54:28,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:28,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305348333] [2021-10-16 02:54:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:28,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:28,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:28,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305348333] [2021-10-16 02:54:28,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305348333] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:28,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:28,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:28,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055821376] [2021-10-16 02:54:28,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:28,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:28,736 INFO L87 Difference]: Start difference. First operand 13763 states and 19790 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-10-16 02:54:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:29,467 INFO L93 Difference]: Finished difference Result 25799 states and 37560 transitions. [2021-10-16 02:54:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:29,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-10-16 02:54:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:29,514 INFO L225 Difference]: With dead ends: 25799 [2021-10-16 02:54:29,514 INFO L226 Difference]: Without dead ends: 16509 [2021-10-16 02:54:29,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16509 states. [2021-10-16 02:54:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16509 to 15951. [2021-10-16 02:54:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15951 states, 15950 states have (on average 1.453667711598746) internal successors, (23186), 15950 states have internal predecessors, (23186), 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) [2021-10-16 02:54:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 23186 transitions. [2021-10-16 02:54:30,252 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 23186 transitions. Word has length 83 [2021-10-16 02:54:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:30,252 INFO L470 AbstractCegarLoop]: Abstraction has 15951 states and 23186 transitions. [2021-10-16 02:54:30,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-10-16 02:54:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 23186 transitions. [2021-10-16 02:54:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-16 02:54:30,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:30,277 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:30,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-16 02:54:30,277 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1386430113, now seen corresponding path program 1 times [2021-10-16 02:54:30,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:30,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809861273] [2021-10-16 02:54:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:30,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:54:30,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:30,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809861273] [2021-10-16 02:54:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809861273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:30,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71474729] [2021-10-16 02:54:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:30,328 INFO L87 Difference]: Start difference. First operand 15951 states and 23186 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-10-16 02:54:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:30,916 INFO L93 Difference]: Finished difference Result 30443 states and 44289 transitions. [2021-10-16 02:54:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2021-10-16 02:54:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:30,952 INFO L225 Difference]: With dead ends: 30443 [2021-10-16 02:54:30,952 INFO L226 Difference]: Without dead ends: 16035 [2021-10-16 02:54:30,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16035 states. [2021-10-16 02:54:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16035 to 15951. [2021-10-16 02:54:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15951 states, 15950 states have (on average 1.4450156739811912) internal successors, (23048), 15950 states have internal predecessors, (23048), 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) [2021-10-16 02:54:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15951 states to 15951 states and 23048 transitions. [2021-10-16 02:54:31,645 INFO L78 Accepts]: Start accepts. Automaton has 15951 states and 23048 transitions. Word has length 84 [2021-10-16 02:54:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:31,646 INFO L470 AbstractCegarLoop]: Abstraction has 15951 states and 23048 transitions. [2021-10-16 02:54:31,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-10-16 02:54:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15951 states and 23048 transitions. [2021-10-16 02:54:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-16 02:54:31,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:31,673 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:31,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-16 02:54:31,673 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2048541769, now seen corresponding path program 1 times [2021-10-16 02:54:31,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:31,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544114116] [2021-10-16 02:54:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:31,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:31,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:31,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544114116] [2021-10-16 02:54:31,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544114116] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:31,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:31,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:31,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074723213] [2021-10-16 02:54:31,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:31,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:31,721 INFO L87 Difference]: Start difference. First operand 15951 states and 23048 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-10-16 02:54:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:32,366 INFO L93 Difference]: Finished difference Result 26948 states and 38975 transitions. [2021-10-16 02:54:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-10-16 02:54:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:32,388 INFO L225 Difference]: With dead ends: 26948 [2021-10-16 02:54:32,388 INFO L226 Difference]: Without dead ends: 12540 [2021-10-16 02:54:32,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2021-10-16 02:54:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 12204. [2021-10-16 02:54:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12204 states, 12203 states have (on average 1.4109645169220684) internal successors, (17218), 12203 states have internal predecessors, (17218), 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) [2021-10-16 02:54:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12204 states to 12204 states and 17218 transitions. [2021-10-16 02:54:32,853 INFO L78 Accepts]: Start accepts. Automaton has 12204 states and 17218 transitions. Word has length 85 [2021-10-16 02:54:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:32,853 INFO L470 AbstractCegarLoop]: Abstraction has 12204 states and 17218 transitions. [2021-10-16 02:54:32,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-10-16 02:54:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12204 states and 17218 transitions. [2021-10-16 02:54:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-16 02:54:32,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:32,917 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:32,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-16 02:54:32,918 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash -204040586, now seen corresponding path program 1 times [2021-10-16 02:54:32,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:32,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958351711] [2021-10-16 02:54:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:32,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 02:54:32,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:32,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958351711] [2021-10-16 02:54:32,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958351711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:32,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:32,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:54:32,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963044935] [2021-10-16 02:54:32,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:32,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:32,998 INFO L87 Difference]: Start difference. First operand 12204 states and 17218 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-10-16 02:54:33,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:33,812 INFO L93 Difference]: Finished difference Result 25642 states and 35812 transitions. [2021-10-16 02:54:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 86 [2021-10-16 02:54:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:33,836 INFO L225 Difference]: With dead ends: 25642 [2021-10-16 02:54:33,837 INFO L226 Difference]: Without dead ends: 13454 [2021-10-16 02:54:33,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:33,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2021-10-16 02:54:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 13450. [2021-10-16 02:54:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13450 states, 13449 states have (on average 1.3644880660272138) internal successors, (18351), 13449 states have internal predecessors, (18351), 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) [2021-10-16 02:54:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 18351 transitions. [2021-10-16 02:54:34,593 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 18351 transitions. Word has length 86 [2021-10-16 02:54:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:34,593 INFO L470 AbstractCegarLoop]: Abstraction has 13450 states and 18351 transitions. [2021-10-16 02:54:34,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-10-16 02:54:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 18351 transitions. [2021-10-16 02:54:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-16 02:54:34,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:34,606 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:34,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-16 02:54:34,607 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash 419493126, now seen corresponding path program 1 times [2021-10-16 02:54:34,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:34,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581303981] [2021-10-16 02:54:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:34,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:34,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:34,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581303981] [2021-10-16 02:54:34,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581303981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:34,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:34,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:54:34,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050563894] [2021-10-16 02:54:34,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:34,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:34,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:34,675 INFO L87 Difference]: Start difference. First operand 13450 states and 18351 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-10-16 02:54:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:35,518 INFO L93 Difference]: Finished difference Result 27015 states and 36982 transitions. [2021-10-16 02:54:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:35,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 88 [2021-10-16 02:54:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:35,540 INFO L225 Difference]: With dead ends: 27015 [2021-10-16 02:54:35,541 INFO L226 Difference]: Without dead ends: 17624 [2021-10-16 02:54:35,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17624 states. [2021-10-16 02:54:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17624 to 14286. [2021-10-16 02:54:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14286 states, 14285 states have (on average 1.3406370318515926) internal successors, (19151), 14285 states have internal predecessors, (19151), 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) [2021-10-16 02:54:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14286 states to 14286 states and 19151 transitions. [2021-10-16 02:54:36,218 INFO L78 Accepts]: Start accepts. Automaton has 14286 states and 19151 transitions. Word has length 88 [2021-10-16 02:54:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 14286 states and 19151 transitions. [2021-10-16 02:54:36,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-10-16 02:54:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 14286 states and 19151 transitions. [2021-10-16 02:54:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-16 02:54:36,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:36,228 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:36,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-16 02:54:36,228 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:36,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:36,229 INFO L82 PathProgramCache]: Analyzing trace with hash -493269631, now seen corresponding path program 1 times [2021-10-16 02:54:36,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:36,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29358528] [2021-10-16 02:54:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:36,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:36,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:36,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29358528] [2021-10-16 02:54:36,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29358528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:36,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:36,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:36,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065288523] [2021-10-16 02:54:36,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:36,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:36,270 INFO L87 Difference]: Start difference. First operand 14286 states and 19151 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-16 02:54:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:36,843 INFO L93 Difference]: Finished difference Result 26218 states and 35314 transitions. [2021-10-16 02:54:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-10-16 02:54:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:36,860 INFO L225 Difference]: With dead ends: 26218 [2021-10-16 02:54:36,860 INFO L226 Difference]: Without dead ends: 14270 [2021-10-16 02:54:36,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14270 states. [2021-10-16 02:54:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14270 to 14086. [2021-10-16 02:54:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14086 states, 14085 states have (on average 1.3020234291799786) internal successors, (18339), 14085 states have internal predecessors, (18339), 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) [2021-10-16 02:54:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14086 states to 14086 states and 18339 transitions. [2021-10-16 02:54:37,449 INFO L78 Accepts]: Start accepts. Automaton has 14086 states and 18339 transitions. Word has length 110 [2021-10-16 02:54:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:37,449 INFO L470 AbstractCegarLoop]: Abstraction has 14086 states and 18339 transitions. [2021-10-16 02:54:37,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-16 02:54:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14086 states and 18339 transitions. [2021-10-16 02:54:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-16 02:54:37,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:37,459 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:37,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-16 02:54:37,460 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:37,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2048164705, now seen corresponding path program 1 times [2021-10-16 02:54:37,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:37,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434785840] [2021-10-16 02:54:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:37,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:54:37,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:37,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434785840] [2021-10-16 02:54:37,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434785840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:37,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:37,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:54:37,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312077441] [2021-10-16 02:54:37,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:37,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:37,505 INFO L87 Difference]: Start difference. First operand 14086 states and 18339 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2021-10-16 02:54:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:38,260 INFO L93 Difference]: Finished difference Result 25794 states and 33666 transitions. [2021-10-16 02:54:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 110 [2021-10-16 02:54:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:38,282 INFO L225 Difference]: With dead ends: 25794 [2021-10-16 02:54:38,282 INFO L226 Difference]: Without dead ends: 14086 [2021-10-16 02:54:38,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14086 states. [2021-10-16 02:54:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14086 to 14086. [2021-10-16 02:54:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14086 states, 14085 states have (on average 1.2790202342917998) internal successors, (18015), 14085 states have internal predecessors, (18015), 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) [2021-10-16 02:54:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14086 states to 14086 states and 18015 transitions. [2021-10-16 02:54:38,859 INFO L78 Accepts]: Start accepts. Automaton has 14086 states and 18015 transitions. Word has length 110 [2021-10-16 02:54:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:38,859 INFO L470 AbstractCegarLoop]: Abstraction has 14086 states and 18015 transitions. [2021-10-16 02:54:38,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2021-10-16 02:54:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 14086 states and 18015 transitions. [2021-10-16 02:54:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-16 02:54:38,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:38,871 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:38,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-16 02:54:38,872 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:38,872 INFO L82 PathProgramCache]: Analyzing trace with hash 310856231, now seen corresponding path program 1 times [2021-10-16 02:54:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:38,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880756513] [2021-10-16 02:54:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:38,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:38,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:38,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880756513] [2021-10-16 02:54:38,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880756513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:38,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:38,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:54:38,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120920097] [2021-10-16 02:54:38,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:38,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:38,930 INFO L87 Difference]: Start difference. First operand 14086 states and 18015 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-10-16 02:54:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:39,626 INFO L93 Difference]: Finished difference Result 29374 states and 38298 transitions. [2021-10-16 02:54:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 113 [2021-10-16 02:54:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:39,648 INFO L225 Difference]: With dead ends: 29374 [2021-10-16 02:54:39,649 INFO L226 Difference]: Without dead ends: 17666 [2021-10-16 02:54:39,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17666 states. [2021-10-16 02:54:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17666 to 14782. [2021-10-16 02:54:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14782 states, 14781 states have (on average 1.2875312901698126) internal successors, (19031), 14781 states have internal predecessors, (19031), 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) [2021-10-16 02:54:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14782 states to 14782 states and 19031 transitions. [2021-10-16 02:54:40,306 INFO L78 Accepts]: Start accepts. Automaton has 14782 states and 19031 transitions. Word has length 113 [2021-10-16 02:54:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:40,306 INFO L470 AbstractCegarLoop]: Abstraction has 14782 states and 19031 transitions. [2021-10-16 02:54:40,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2021-10-16 02:54:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14782 states and 19031 transitions. [2021-10-16 02:54:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-16 02:54:40,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:40,324 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:40,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-16 02:54:40,324 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1867357665, now seen corresponding path program 1 times [2021-10-16 02:54:40,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:40,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738290655] [2021-10-16 02:54:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:40,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:54:40,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:40,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738290655] [2021-10-16 02:54:40,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738290655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:40,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:40,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:54:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159450562] [2021-10-16 02:54:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:54:40,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:54:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:40,372 INFO L87 Difference]: Start difference. First operand 14782 states and 19031 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-10-16 02:54:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:41,053 INFO L93 Difference]: Finished difference Result 28172 states and 36374 transitions. [2021-10-16 02:54:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:54:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2021-10-16 02:54:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:41,072 INFO L225 Difference]: With dead ends: 28172 [2021-10-16 02:54:41,072 INFO L226 Difference]: Without dead ends: 14710 [2021-10-16 02:54:41,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:54:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14710 states. [2021-10-16 02:54:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14710 to 14518. [2021-10-16 02:54:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14518 states, 14517 states have (on average 1.243989805056141) internal successors, (18059), 14517 states have internal predecessors, (18059), 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) [2021-10-16 02:54:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14518 states to 14518 states and 18059 transitions. [2021-10-16 02:54:41,611 INFO L78 Accepts]: Start accepts. Automaton has 14518 states and 18059 transitions. Word has length 135 [2021-10-16 02:54:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:41,612 INFO L470 AbstractCegarLoop]: Abstraction has 14518 states and 18059 transitions. [2021-10-16 02:54:41,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-10-16 02:54:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14518 states and 18059 transitions. [2021-10-16 02:54:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-16 02:54:41,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:41,621 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:41,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-16 02:54:41,622 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:41,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1533946912, now seen corresponding path program 1 times [2021-10-16 02:54:41,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:41,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790105451] [2021-10-16 02:54:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:41,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:54:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:54:41,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:54:41,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790105451] [2021-10-16 02:54:41,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790105451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:54:41,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:54:41,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:54:41,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748811127] [2021-10-16 02:54:41,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:54:41,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:54:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:54:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:41,680 INFO L87 Difference]: Start difference. First operand 14518 states and 18059 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-10-16 02:54:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:54:42,464 INFO L93 Difference]: Finished difference Result 27644 states and 34446 transitions. [2021-10-16 02:54:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:54:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 135 [2021-10-16 02:54:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:54:42,481 INFO L225 Difference]: With dead ends: 27644 [2021-10-16 02:54:42,482 INFO L226 Difference]: Without dead ends: 14462 [2021-10-16 02:54:42,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:54:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14462 states. [2021-10-16 02:54:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14462 to 14462. [2021-10-16 02:54:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14462 states, 14461 states have (on average 1.2169974413940945) internal successors, (17599), 14461 states have internal predecessors, (17599), 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) [2021-10-16 02:54:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14462 states to 14462 states and 17599 transitions. [2021-10-16 02:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 14462 states and 17599 transitions. Word has length 135 [2021-10-16 02:54:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:54:43,216 INFO L470 AbstractCegarLoop]: Abstraction has 14462 states and 17599 transitions. [2021-10-16 02:54:43,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-10-16 02:54:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14462 states and 17599 transitions. [2021-10-16 02:54:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-16 02:54:43,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:54:43,229 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:54:43,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-16 02:54:43,229 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:54:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:54:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1392067570, now seen corresponding path program 1 times [2021-10-16 02:54:43,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:54:43,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246874189] [2021-10-16 02:54:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:54:43,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:54:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:54:43,266 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:54:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:54:43,385 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:54:43,385 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:54:43,386 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:54:43,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-16 02:54:43,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:54:43,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:54:43 BoogieIcfgContainer [2021-10-16 02:54:43,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:54:43,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:54:43,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:54:43,586 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:54:43,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:54:20" (3/4) ... [2021-10-16 02:54:43,589 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:54:43,814 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:54:43,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:54:43,816 INFO L168 Benchmark]: Toolchain (without parser) took 25985.61 ms. Allocated memory was 94.4 MB in the beginning and 3.7 GB in the end (delta: 3.6 GB). Free memory was 59.1 MB in the beginning and 2.6 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,816 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:54:43,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.02 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 66.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.35 ms. Allocated memory is still 94.4 MB. Free memory was 66.5 MB in the beginning and 62.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,818 INFO L168 Benchmark]: Boogie Preprocessor took 97.45 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 58.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,818 INFO L168 Benchmark]: RCFGBuilder took 2187.72 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 63.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,819 INFO L168 Benchmark]: TraceAbstraction took 22912.70 ms. Allocated memory was 115.3 MB in the beginning and 3.7 GB in the end (delta: 3.6 GB). Free memory was 63.1 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 985.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,819 INFO L168 Benchmark]: Witness Printer took 228.50 ms. Allocated memory is still 3.7 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:54:43,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.02 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 66.5 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.35 ms. Allocated memory is still 94.4 MB. Free memory was 66.5 MB in the beginning and 62.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.45 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 58.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2187.72 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 63.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22912.70 ms. Allocated memory was 115.3 MB in the beginning and 3.7 GB in the end (delta: 3.6 GB). Free memory was 63.1 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 985.9 MB. Max. memory is 16.1 GB. * Witness Printer took 228.50 ms. Allocated memory is still 3.7 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int m_pc = 0; [L18] int t1_pc = 0; [L19] int t2_pc = 0; [L20] int t3_pc = 0; [L21] int t4_pc = 0; [L22] int m_st ; [L23] int t1_st ; [L24] int t2_st ; [L25] int t3_st ; [L26] int t4_st ; [L27] int m_i ; [L28] int t1_i ; [L29] int t2_i ; [L30] int t3_i ; [L31] int t4_i ; [L32] int M_E = 2; [L33] int T1_E = 2; [L34] int T2_E = 2; [L35] int T3_E = 2; [L36] int T4_E = 2; [L37] int E_1 = 2; [L38] int E_2 = 2; [L39] int E_3 = 2; [L40] int E_4 = 2; [L813] int __retres1 ; [L725] m_i = 1 [L726] t1_i = 1 [L727] t2_i = 1 [L728] t3_i = 1 [L729] t4_i = 1 [L754] int kernel_st ; [L755] int tmp ; [L756] int tmp___0 ; [L760] kernel_st = 0 [L333] COND TRUE m_i == 1 [L334] m_st = 0 [L338] COND TRUE t1_i == 1 [L339] t1_st = 0 [L343] COND TRUE t2_i == 1 [L344] t2_st = 0 [L348] COND TRUE t3_i == 1 [L349] t3_st = 0 [L353] COND TRUE t4_i == 1 [L354] t4_st = 0 [L494] COND FALSE !(M_E == 0) [L499] COND FALSE !(T1_E == 0) [L504] COND FALSE !(T2_E == 0) [L509] COND FALSE !(T3_E == 0) [L514] COND FALSE !(T4_E == 0) [L519] COND FALSE !(E_1 == 0) [L524] COND FALSE !(E_2 == 0) [L529] COND FALSE !(E_3 == 0) [L534] COND FALSE !(E_4 == 0) [L597] int tmp ; [L598] int tmp___0 ; [L599] int tmp___1 ; [L600] int tmp___2 ; [L601] int tmp___3 ; [L227] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L230] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L240] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L242] return (__retres1); [L605] tmp = is_master_triggered() [L607] COND FALSE !(\read(tmp)) [L246] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L249] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L259] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L261] return (__retres1); [L613] tmp___0 = is_transmit1_triggered() [L615] COND FALSE !(\read(tmp___0)) [L265] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L268] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L278] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L280] return (__retres1); [L621] tmp___1 = is_transmit2_triggered() [L623] COND FALSE !(\read(tmp___1)) [L284] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L287] COND FALSE !(t3_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L297] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L299] return (__retres1); [L629] tmp___2 = is_transmit3_triggered() [L631] COND FALSE !(\read(tmp___2)) [L303] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L306] COND FALSE !(t4_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L316] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L318] return (__retres1); [L637] tmp___3 = is_transmit4_triggered() [L639] COND FALSE !(\read(tmp___3)) [L547] COND FALSE !(M_E == 1) [L552] COND FALSE !(T1_E == 1) [L557] COND FALSE !(T2_E == 1) [L562] COND FALSE !(T3_E == 1) [L567] COND FALSE !(T4_E == 1) [L572] COND FALSE !(E_1 == 1) [L577] COND FALSE !(E_2 == 1) [L582] COND FALSE !(E_3 == 1) [L587] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L768] COND TRUE 1 [L771] kernel_st = 1 [L399] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L403] COND TRUE 1 [L363] int __retres1 ; [L366] COND TRUE m_st == 0 [L367] __retres1 = 1 [L394] return (__retres1); [L406] tmp = exists_runnable_thread() [L408] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L413] COND TRUE m_st == 0 [L414] int tmp_ndt_1; [L415] tmp_ndt_1 = __VERIFIER_nondet_int() [L416] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L427] COND TRUE t1_st == 0 [L428] int tmp_ndt_2; [L429] tmp_ndt_2 = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp_ndt_2) [L432] t1_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L92] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L441] COND TRUE t2_st == 0 [L442] int tmp_ndt_3; [L443] tmp_ndt_3 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp_ndt_3) [L446] t2_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L127] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L138] COND TRUE 1 [L140] t2_pc = 1 [L141] t2_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L455] COND TRUE t3_st == 0 [L456] int tmp_ndt_4; [L457] tmp_ndt_4 = __VERIFIER_nondet_int() [L458] COND TRUE \read(tmp_ndt_4) [L460] t3_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L162] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L173] COND TRUE 1 [L175] t3_pc = 1 [L176] t3_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=0, t4_st=0] [L469] COND TRUE t4_st == 0 [L470] int tmp_ndt_5; [L471] tmp_ndt_5 = __VERIFIER_nondet_int() [L472] COND TRUE \read(tmp_ndt_5) [L474] t4_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=0, t4_st=1] [L197] COND TRUE t4_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=0, t4_st=1] [L208] COND TRUE 1 [L210] t4_pc = 1 [L211] t4_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L403] COND TRUE 1 [L363] int __retres1 ; [L366] COND TRUE m_st == 0 [L367] __retres1 = 1 [L394] return (__retres1); [L406] tmp = exists_runnable_thread() [L408] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L413] COND TRUE m_st == 0 [L414] int tmp_ndt_1; [L415] tmp_ndt_1 = __VERIFIER_nondet_int() [L416] COND TRUE \read(tmp_ndt_1) [L418] m_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L51] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L62] COND TRUE 1 [L65] E_1 = 1 [L597] int tmp ; [L598] int tmp___0 ; [L599] int tmp___1 ; [L600] int tmp___2 ; [L601] int tmp___3 ; [L227] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L230] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L240] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L242] return (__retres1); [L605] tmp = is_master_triggered() [L607] COND FALSE !(\read(tmp)) [L246] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L249] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] COND TRUE E_1 == 1 [L251] __retres1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L261] return (__retres1); [L613] tmp___0 = is_transmit1_triggered() [L615] COND TRUE \read(tmp___0) [L616] t1_st = 0 [L265] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L268] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L278] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L280] return (__retres1); [L621] tmp___1 = is_transmit2_triggered() [L623] COND FALSE !(\read(tmp___1)) [L284] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L287] COND TRUE t3_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] COND FALSE !(E_3 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L297] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L299] return (__retres1); [L629] tmp___2 = is_transmit3_triggered() [L631] COND FALSE !(\read(tmp___2)) [L303] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L306] COND TRUE t4_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] COND FALSE !(E_4 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L316] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L318] return (__retres1); [L637] tmp___3 = is_transmit4_triggered() [L639] COND FALSE !(\read(tmp___3)) [L67] E_1 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L70] COND TRUE 1 [L72] m_pc = 1 [L73] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L427] COND TRUE t1_st == 0 [L428] int tmp_ndt_2; [L429] tmp_ndt_2 = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp_ndt_2) [L432] t1_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L92] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L95] COND TRUE t1_pc == 1 [L111] E_2 = 1 [L597] int tmp ; [L598] int tmp___0 ; [L599] int tmp___1 ; [L600] int tmp___2 ; [L601] int tmp___3 ; [L227] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L230] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L231] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L240] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L242] return (__retres1); [L605] tmp = is_master_triggered() [L607] COND FALSE !(\read(tmp)) [L246] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L249] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L259] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L261] return (__retres1); [L613] tmp___0 = is_transmit1_triggered() [L615] COND FALSE !(\read(tmp___0)) [L265] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L268] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] COND TRUE E_2 == 1 [L270] __retres1 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L280] return (__retres1); [L621] tmp___1 = is_transmit2_triggered() [L623] COND TRUE \read(tmp___1) [L624] t2_st = 0 [L284] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L287] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L297] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L299] return (__retres1); [L629] tmp___2 = is_transmit3_triggered() [L631] COND FALSE !(\read(tmp___2)) [L303] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L306] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L316] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L318] return (__retres1); [L637] tmp___3 = is_transmit4_triggered() [L639] COND FALSE !(\read(tmp___3)) [L113] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L441] COND TRUE t2_st == 0 [L442] int tmp_ndt_3; [L443] tmp_ndt_3 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp_ndt_3) [L446] t2_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L127] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L130] COND TRUE t2_pc == 1 [L146] E_3 = 1 [L597] int tmp ; [L598] int tmp___0 ; [L599] int tmp___1 ; [L600] int tmp___2 ; [L601] int tmp___3 ; [L227] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L230] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L231] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L240] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L242] return (__retres1); [L605] tmp = is_master_triggered() [L607] COND FALSE !(\read(tmp)) [L246] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L249] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L259] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L261] return (__retres1); [L613] tmp___0 = is_transmit1_triggered() [L615] COND FALSE !(\read(tmp___0)) [L265] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L268] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L278] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L280] return (__retres1); [L621] tmp___1 = is_transmit2_triggered() [L623] COND FALSE !(\read(tmp___1)) [L284] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L287] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] COND TRUE E_3 == 1 [L289] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L299] return (__retres1); [L629] tmp___2 = is_transmit3_triggered() [L631] COND TRUE \read(tmp___2) [L632] t3_st = 0 [L303] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L306] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L316] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L318] return (__retres1); [L637] tmp___3 = is_transmit4_triggered() [L639] COND FALSE !(\read(tmp___3)) [L148] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L138] COND TRUE 1 [L140] t2_pc = 1 [L141] t2_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L455] COND TRUE t3_st == 0 [L456] int tmp_ndt_4; [L457] tmp_ndt_4 = __VERIFIER_nondet_int() [L458] COND TRUE \read(tmp_ndt_4) [L460] t3_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L162] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L165] COND TRUE t3_pc == 1 [L181] E_4 = 1 [L597] int tmp ; [L598] int tmp___0 ; [L599] int tmp___1 ; [L600] int tmp___2 ; [L601] int tmp___3 ; [L227] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L230] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L231] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L240] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L242] return (__retres1); [L605] tmp = is_master_triggered() [L607] COND FALSE !(\read(tmp)) [L246] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L249] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L250] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L259] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L261] return (__retres1); [L613] tmp___0 = is_transmit1_triggered() [L615] COND FALSE !(\read(tmp___0)) [L265] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L268] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L269] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L278] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L280] return (__retres1); [L621] tmp___1 = is_transmit2_triggered() [L623] COND FALSE !(\read(tmp___1)) [L284] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L287] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L288] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L297] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L299] return (__retres1); [L629] tmp___2 = is_transmit3_triggered() [L631] COND FALSE !(\read(tmp___2)) [L303] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L306] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L307] COND TRUE E_4 == 1 [L308] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=2] [L318] return (__retres1); [L637] tmp___3 = is_transmit4_triggered() [L639] COND TRUE \read(tmp___3) [L640] t4_st = 0 [L183] E_4 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, T4_E=2, t4_i=1, t4_pc=1, t4_st=0] [L173] COND TRUE 1 [L175] t3_pc = 1 [L176] t3_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=0] [L469] COND TRUE t4_st == 0 [L470] int tmp_ndt_5; [L471] tmp_ndt_5 = __VERIFIER_nondet_int() [L472] COND TRUE \read(tmp_ndt_5) [L474] t4_st = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] [L197] COND FALSE !(t4_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] [L200] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] [L13] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, T4_E=2, t4_i=1, t4_pc=1, t4_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 178 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22632.0ms, OverallIterations: 25, TraceHistogramMax: 3, EmptinessCheckTime: 316.3ms, AutomataDifference: 10881.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7794 SDtfs, 5510 SDslu, 5255 SDs, 0 SdLazy, 608 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 745.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15951occurred in iteration=15, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9512.3ms AutomataMinimizationTime, 24 MinimizatonAttempts, 12013 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 107.9ms SsaConstructionTime, 459.2ms SatisfiabilityAnalysisTime, 900.5ms InterpolantComputationTime, 1931 NumberOfCodeBlocks, 1931 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1768 ConstructedInterpolants, 0 QuantifiedInterpolants, 3235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 287/287 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:54:43,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_739e18db-e6cb-41d9-9551-964c932500ce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...