./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.02.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI --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 5c6676c90977e408adf03f66d7ae0804453cb34e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:29:44,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:44,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:44,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:44,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:44,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:44,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:44,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:44,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:44,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:44,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:44,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:44,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:44,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:44,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:44,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:44,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:44,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:44,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:44,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:44,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:44,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:44,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:44,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:44,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:44,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:44,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:44,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:44,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:44,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:44,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:44,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:44,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:44,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:44,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:44,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:44,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:44,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:44,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:44,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:44,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:44,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:44,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:44,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:44,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:44,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:44,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:44,679 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:44,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:44,680 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:44,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:44,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:44,681 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:44,681 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:44,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:44,682 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:44,682 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:44,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:44,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:44,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:44,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:44,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:44,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:44,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:44,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:44,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:44,685 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:44,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:44,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:44,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:44,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:44,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:44,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:44,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:44,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:44,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:44,688 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:44,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:44,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:44,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:44,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:44,690 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_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6676c90977e408adf03f66d7ae0804453cb34e [2021-10-11 02:29:44,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:45,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:45,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:45,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:45,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:45,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2021-10-11 02:29:45,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/data/e8de705d8/1e545875105244b981e0fc425e88a50a/FLAG5b0048853 [2021-10-11 02:29:45,583 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:45,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/sv-benchmarks/c/systemc/transmitter.02.cil.c [2021-10-11 02:29:45,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/data/e8de705d8/1e545875105244b981e0fc425e88a50a/FLAG5b0048853 [2021-10-11 02:29:45,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/data/e8de705d8/1e545875105244b981e0fc425e88a50a [2021-10-11 02:29:45,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:45,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:45,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:45,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:45,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:45,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:45" (1/1) ... [2021-10-11 02:29:45,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a71da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:45, skipping insertion in model container [2021-10-11 02:29:45,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:45" (1/1) ... [2021-10-11 02:29:45,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:45,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:46,141 WARN L226 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_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2021-10-11 02:29:46,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:46,206 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:46,218 WARN L226 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_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/sv-benchmarks/c/systemc/transmitter.02.cil.c[401,414] [2021-10-11 02:29:46,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:46,273 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:46,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46 WrapperNode [2021-10-11 02:29:46,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:46,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:46,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:46,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:46,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:46,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:46,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:46,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:46,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... [2021-10-11 02:29:46,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:46,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:46,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:46,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:46,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:46,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:46,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:48,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:48,099 INFO L299 CfgBuilder]: Removed 94 assume(true) statements. [2021-10-11 02:29:48,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48 BoogieIcfgContainer [2021-10-11 02:29:48,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:48,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:48,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:48,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:48,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:45" (1/3) ... [2021-10-11 02:29:48,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297bd2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:48, skipping insertion in model container [2021-10-11 02:29:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:46" (2/3) ... [2021-10-11 02:29:48,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297bd2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:48, skipping insertion in model container [2021-10-11 02:29:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48" (3/3) ... [2021-10-11 02:29:48,111 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2021-10-11 02:29:48,127 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:48,132 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:48,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:48,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:48,169 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:48,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:48,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:48,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:48,170 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:48,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:48,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-10-11 02:29:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:29:48,194 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:48,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:48,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash -614020527, now seen corresponding path program 1 times [2021-10-11 02:29:48,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:48,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727663797] [2021-10-11 02:29:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:48,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727663797] [2021-10-11 02:29:48,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:48,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:48,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70670646] [2021-10-11 02:29:48,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:48,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:48,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:48,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:48,447 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2021-10-11 02:29:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:48,664 INFO L93 Difference]: Finished difference Result 295 states and 453 transitions. [2021-10-11 02:29:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:48,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 02:29:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:48,678 INFO L225 Difference]: With dead ends: 295 [2021-10-11 02:29:48,678 INFO L226 Difference]: Without dead ends: 203 [2021-10-11 02:29:48,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-11 02:29:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2021-10-11 02:29:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-10-11 02:29:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2021-10-11 02:29:48,737 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 20 [2021-10-11 02:29:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:48,738 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2021-10-11 02:29:48,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2021-10-11 02:29:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:29:48,739 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:48,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:48,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:48,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash 562583792, now seen corresponding path program 1 times [2021-10-11 02:29:48,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:48,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715722159] [2021-10-11 02:29:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:48,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715722159] [2021-10-11 02:29:48,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:48,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:48,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850166730] [2021-10-11 02:29:48,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:48,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:48,835 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand 4 states. [2021-10-11 02:29:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:48,972 INFO L93 Difference]: Finished difference Result 524 states and 764 transitions. [2021-10-11 02:29:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:48,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 02:29:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:48,981 INFO L225 Difference]: With dead ends: 524 [2021-10-11 02:29:48,982 INFO L226 Difference]: Without dead ends: 356 [2021-10-11 02:29:48,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-11 02:29:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2021-10-11 02:29:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-10-11 02:29:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 395 transitions. [2021-10-11 02:29:49,047 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 395 transitions. Word has length 20 [2021-10-11 02:29:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:49,047 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 395 transitions. [2021-10-11 02:29:49,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 395 transitions. [2021-10-11 02:29:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:29:49,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:49,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:49,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:49,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:49,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1698088827, now seen corresponding path program 1 times [2021-10-11 02:29:49,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:49,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374447206] [2021-10-11 02:29:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:49,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374447206] [2021-10-11 02:29:49,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:49,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:49,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903777673] [2021-10-11 02:29:49,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:49,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:49,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:49,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:49,175 INFO L87 Difference]: Start difference. First operand 272 states and 395 transitions. Second operand 4 states. [2021-10-11 02:29:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:49,291 INFO L93 Difference]: Finished difference Result 837 states and 1229 transitions. [2021-10-11 02:29:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:49,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-10-11 02:29:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:49,295 INFO L225 Difference]: With dead ends: 837 [2021-10-11 02:29:49,295 INFO L226 Difference]: Without dead ends: 576 [2021-10-11 02:29:49,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-11 02:29:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 453. [2021-10-11 02:29:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-10-11 02:29:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 657 transitions. [2021-10-11 02:29:49,330 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 657 transitions. Word has length 21 [2021-10-11 02:29:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:49,331 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 657 transitions. [2021-10-11 02:29:49,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 657 transitions. [2021-10-11 02:29:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:29:49,332 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:49,332 INFO L422 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] [2021-10-11 02:29:49,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:49,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1311709923, now seen corresponding path program 1 times [2021-10-11 02:29:49,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:49,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752488354] [2021-10-11 02:29:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752488354] [2021-10-11 02:29:49,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:49,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543064016] [2021-10-11 02:29:49,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:49,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:49,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:49,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:49,414 INFO L87 Difference]: Start difference. First operand 453 states and 657 transitions. Second operand 3 states. [2021-10-11 02:29:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:49,476 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2021-10-11 02:29:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:49,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:29:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:49,483 INFO L225 Difference]: With dead ends: 1304 [2021-10-11 02:29:49,483 INFO L226 Difference]: Without dead ends: 859 [2021-10-11 02:29:49,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-10-11 02:29:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 850. [2021-10-11 02:29:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2021-10-11 02:29:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1189 transitions. [2021-10-11 02:29:49,529 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1189 transitions. Word has length 22 [2021-10-11 02:29:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:49,529 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1189 transitions. [2021-10-11 02:29:49,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1189 transitions. [2021-10-11 02:29:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:29:49,532 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:49,532 INFO L422 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] [2021-10-11 02:29:49,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:49,533 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash -536439752, now seen corresponding path program 1 times [2021-10-11 02:29:49,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:49,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640643750] [2021-10-11 02:29:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:49,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640643750] [2021-10-11 02:29:49,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:49,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:49,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136851851] [2021-10-11 02:29:49,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:49,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:49,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:49,593 INFO L87 Difference]: Start difference. First operand 850 states and 1189 transitions. Second operand 3 states. [2021-10-11 02:29:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:49,670 INFO L93 Difference]: Finished difference Result 1558 states and 2224 transitions. [2021-10-11 02:29:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:49,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-10-11 02:29:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:49,678 INFO L225 Difference]: With dead ends: 1558 [2021-10-11 02:29:49,678 INFO L226 Difference]: Without dead ends: 1116 [2021-10-11 02:29:49,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:49,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-11 02:29:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 927. [2021-10-11 02:29:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2021-10-11 02:29:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1307 transitions. [2021-10-11 02:29:49,757 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1307 transitions. Word has length 32 [2021-10-11 02:29:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:49,757 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1307 transitions. [2021-10-11 02:29:49,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1307 transitions. [2021-10-11 02:29:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-11 02:29:49,762 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:49,762 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:29:49,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:49,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:49,763 INFO L82 PathProgramCache]: Analyzing trace with hash 392747346, now seen corresponding path program 1 times [2021-10-11 02:29:49,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:49,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669296947] [2021-10-11 02:29:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:29:49,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669296947] [2021-10-11 02:29:49,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:49,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:49,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455256090] [2021-10-11 02:29:49,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:49,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:49,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:49,836 INFO L87 Difference]: Start difference. First operand 927 states and 1307 transitions. Second operand 4 states. [2021-10-11 02:29:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:49,945 INFO L93 Difference]: Finished difference Result 1868 states and 2694 transitions. [2021-10-11 02:29:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:49,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2021-10-11 02:29:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:49,958 INFO L225 Difference]: With dead ends: 1868 [2021-10-11 02:29:49,958 INFO L226 Difference]: Without dead ends: 1349 [2021-10-11 02:29:49,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-10-11 02:29:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 927. [2021-10-11 02:29:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2021-10-11 02:29:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1294 transitions. [2021-10-11 02:29:50,029 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1294 transitions. Word has length 44 [2021-10-11 02:29:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:50,040 INFO L481 AbstractCegarLoop]: Abstraction has 927 states and 1294 transitions. [2021-10-11 02:29:50,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1294 transitions. [2021-10-11 02:29:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-11 02:29:50,045 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:50,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:29:50,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:50,046 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:50,047 INFO L82 PathProgramCache]: Analyzing trace with hash -480091309, now seen corresponding path program 1 times [2021-10-11 02:29:50,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:50,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701154325] [2021-10-11 02:29:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:50,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701154325] [2021-10-11 02:29:50,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:50,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:50,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381308319] [2021-10-11 02:29:50,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:50,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:50,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:50,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:50,120 INFO L87 Difference]: Start difference. First operand 927 states and 1294 transitions. Second operand 3 states. [2021-10-11 02:29:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:50,225 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2021-10-11 02:29:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:50,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-10-11 02:29:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:50,231 INFO L225 Difference]: With dead ends: 1446 [2021-10-11 02:29:50,232 INFO L226 Difference]: Without dead ends: 927 [2021-10-11 02:29:50,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-10-11 02:29:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 911. [2021-10-11 02:29:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2021-10-11 02:29:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1236 transitions. [2021-10-11 02:29:50,294 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1236 transitions. Word has length 44 [2021-10-11 02:29:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:50,294 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1236 transitions. [2021-10-11 02:29:50,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1236 transitions. [2021-10-11 02:29:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-11 02:29:50,297 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:50,297 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:29:50,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:50,297 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:50,298 INFO L82 PathProgramCache]: Analyzing trace with hash -750762566, now seen corresponding path program 1 times [2021-10-11 02:29:50,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:50,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983296515] [2021-10-11 02:29:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:50,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983296515] [2021-10-11 02:29:50,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:50,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:50,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874608705] [2021-10-11 02:29:50,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:50,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:50,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:50,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:50,388 INFO L87 Difference]: Start difference. First operand 911 states and 1236 transitions. Second operand 4 states. [2021-10-11 02:29:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:50,550 INFO L93 Difference]: Finished difference Result 1872 states and 2528 transitions. [2021-10-11 02:29:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:50,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-10-11 02:29:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:50,559 INFO L225 Difference]: With dead ends: 1872 [2021-10-11 02:29:50,559 INFO L226 Difference]: Without dead ends: 1455 [2021-10-11 02:29:50,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-10-11 02:29:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1238. [2021-10-11 02:29:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2021-10-11 02:29:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1652 transitions. [2021-10-11 02:29:50,664 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1652 transitions. Word has length 45 [2021-10-11 02:29:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:50,666 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1652 transitions. [2021-10-11 02:29:50,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1652 transitions. [2021-10-11 02:29:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 02:29:50,670 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:50,670 INFO L422 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] [2021-10-11 02:29:50,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:29:50,672 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash 687169780, now seen corresponding path program 1 times [2021-10-11 02:29:50,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:50,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491505418] [2021-10-11 02:29:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:50,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491505418] [2021-10-11 02:29:50,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:50,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:50,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626132834] [2021-10-11 02:29:50,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:50,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:50,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:50,766 INFO L87 Difference]: Start difference. First operand 1238 states and 1652 transitions. Second operand 3 states. [2021-10-11 02:29:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:50,898 INFO L93 Difference]: Finished difference Result 2509 states and 3383 transitions. [2021-10-11 02:29:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:50,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-10-11 02:29:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:50,907 INFO L225 Difference]: With dead ends: 2509 [2021-10-11 02:29:50,907 INFO L226 Difference]: Without dead ends: 1391 [2021-10-11 02:29:50,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-10-11 02:29:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1288. [2021-10-11 02:29:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2021-10-11 02:29:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1728 transitions. [2021-10-11 02:29:50,989 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1728 transitions. Word has length 46 [2021-10-11 02:29:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:50,989 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1728 transitions. [2021-10-11 02:29:50,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1728 transitions. [2021-10-11 02:29:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 02:29:50,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:50,992 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2021-10-11 02:29:50,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:29:50,992 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:50,993 INFO L82 PathProgramCache]: Analyzing trace with hash 74336202, now seen corresponding path program 1 times [2021-10-11 02:29:50,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:50,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095578290] [2021-10-11 02:29:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:29:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095578290] [2021-10-11 02:29:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100255509] [2021-10-11 02:29:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:51,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 02:29:51,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:51,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:51,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:51,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2021-10-11 02:29:51,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511841241] [2021-10-11 02:29:51,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:51,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:51,414 INFO L87 Difference]: Start difference. First operand 1288 states and 1728 transitions. Second operand 5 states. [2021-10-11 02:29:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:51,579 INFO L93 Difference]: Finished difference Result 2627 states and 3592 transitions. [2021-10-11 02:29:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:29:51,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-10-11 02:29:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:51,588 INFO L225 Difference]: With dead ends: 2627 [2021-10-11 02:29:51,588 INFO L226 Difference]: Without dead ends: 1349 [2021-10-11 02:29:51,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:29:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-10-11 02:29:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 876. [2021-10-11 02:29:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2021-10-11 02:29:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1196 transitions. [2021-10-11 02:29:51,662 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1196 transitions. Word has length 48 [2021-10-11 02:29:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:51,663 INFO L481 AbstractCegarLoop]: Abstraction has 876 states and 1196 transitions. [2021-10-11 02:29:51,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1196 transitions. [2021-10-11 02:29:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-11 02:29:51,665 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:51,665 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-10-11 02:29:51,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:29:51,893 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:51,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1432313062, now seen corresponding path program 1 times [2021-10-11 02:29:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:51,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699289328] [2021-10-11 02:29:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:29:51,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699289328] [2021-10-11 02:29:51,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:51,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:51,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112555285] [2021-10-11 02:29:51,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:51,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:51,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:51,963 INFO L87 Difference]: Start difference. First operand 876 states and 1196 transitions. Second operand 3 states. [2021-10-11 02:29:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:52,086 INFO L93 Difference]: Finished difference Result 1889 states and 2553 transitions. [2021-10-11 02:29:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:52,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2021-10-11 02:29:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:52,093 INFO L225 Difference]: With dead ends: 1889 [2021-10-11 02:29:52,094 INFO L226 Difference]: Without dead ends: 1043 [2021-10-11 02:29:52,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-11 02:29:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 917. [2021-10-11 02:29:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2021-10-11 02:29:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1241 transitions. [2021-10-11 02:29:52,160 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1241 transitions. Word has length 57 [2021-10-11 02:29:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:52,161 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1241 transitions. [2021-10-11 02:29:52,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1241 transitions. [2021-10-11 02:29:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-11 02:29:52,163 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:52,164 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2021-10-11 02:29:52,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:29:52,164 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash 326774667, now seen corresponding path program 1 times [2021-10-11 02:29:52,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:52,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158726428] [2021-10-11 02:29:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:52,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158726428] [2021-10-11 02:29:52,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:52,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:29:52,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282879382] [2021-10-11 02:29:52,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:52,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:52,238 INFO L87 Difference]: Start difference. First operand 917 states and 1241 transitions. Second operand 5 states. [2021-10-11 02:29:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:52,450 INFO L93 Difference]: Finished difference Result 1750 states and 2351 transitions. [2021-10-11 02:29:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:29:52,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2021-10-11 02:29:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:52,456 INFO L225 Difference]: With dead ends: 1750 [2021-10-11 02:29:52,456 INFO L226 Difference]: Without dead ends: 886 [2021-10-11 02:29:52,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:29:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-11 02:29:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 753. [2021-10-11 02:29:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2021-10-11 02:29:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1025 transitions. [2021-10-11 02:29:52,515 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1025 transitions. Word has length 59 [2021-10-11 02:29:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:52,515 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1025 transitions. [2021-10-11 02:29:52,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1025 transitions. [2021-10-11 02:29:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-11 02:29:52,517 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:52,517 INFO L422 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] [2021-10-11 02:29:52,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:29:52,518 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1876763817, now seen corresponding path program 1 times [2021-10-11 02:29:52,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:52,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928418500] [2021-10-11 02:29:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:52,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928418500] [2021-10-11 02:29:52,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:52,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:52,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777430179] [2021-10-11 02:29:52,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:52,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,585 INFO L87 Difference]: Start difference. First operand 753 states and 1025 transitions. Second operand 3 states. [2021-10-11 02:29:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:52,671 INFO L93 Difference]: Finished difference Result 1251 states and 1717 transitions. [2021-10-11 02:29:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:52,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2021-10-11 02:29:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:52,675 INFO L225 Difference]: With dead ends: 1251 [2021-10-11 02:29:52,676 INFO L226 Difference]: Without dead ends: 551 [2021-10-11 02:29:52,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-11 02:29:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 547. [2021-10-11 02:29:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2021-10-11 02:29:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 723 transitions. [2021-10-11 02:29:52,719 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 723 transitions. Word has length 59 [2021-10-11 02:29:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:52,719 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 723 transitions. [2021-10-11 02:29:52,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 723 transitions. [2021-10-11 02:29:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-11 02:29:52,721 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:52,721 INFO L422 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] [2021-10-11 02:29:52,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:29:52,721 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash -588569288, now seen corresponding path program 1 times [2021-10-11 02:29:52,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:52,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78157297] [2021-10-11 02:29:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:29:52,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78157297] [2021-10-11 02:29:52,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:52,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:52,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257876954] [2021-10-11 02:29:52,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:52,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,789 INFO L87 Difference]: Start difference. First operand 547 states and 723 transitions. Second operand 3 states. [2021-10-11 02:29:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:52,850 INFO L93 Difference]: Finished difference Result 968 states and 1284 transitions. [2021-10-11 02:29:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:52,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2021-10-11 02:29:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:52,854 INFO L225 Difference]: With dead ends: 968 [2021-10-11 02:29:52,855 INFO L226 Difference]: Without dead ends: 547 [2021-10-11 02:29:52,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-10-11 02:29:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2021-10-11 02:29:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2021-10-11 02:29:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 711 transitions. [2021-10-11 02:29:52,900 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 711 transitions. Word has length 59 [2021-10-11 02:29:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:52,900 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 711 transitions. [2021-10-11 02:29:52,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 711 transitions. [2021-10-11 02:29:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:29:52,901 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:52,902 INFO L422 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, 1] [2021-10-11 02:29:52,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:29:52,902 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash 973812578, now seen corresponding path program 1 times [2021-10-11 02:29:52,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:52,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821409482] [2021-10-11 02:29:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 02:29:52,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821409482] [2021-10-11 02:29:52,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:52,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:52,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570224291] [2021-10-11 02:29:52,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:52,978 INFO L87 Difference]: Start difference. First operand 547 states and 711 transitions. Second operand 3 states. [2021-10-11 02:29:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:53,078 INFO L93 Difference]: Finished difference Result 1427 states and 1865 transitions. [2021-10-11 02:29:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:53,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2021-10-11 02:29:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:53,084 INFO L225 Difference]: With dead ends: 1427 [2021-10-11 02:29:53,084 INFO L226 Difference]: Without dead ends: 933 [2021-10-11 02:29:53,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-10-11 02:29:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2021-10-11 02:29:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2021-10-11 02:29:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1199 transitions. [2021-10-11 02:29:53,197 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1199 transitions. Word has length 60 [2021-10-11 02:29:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:53,198 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1199 transitions. [2021-10-11 02:29:53,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1199 transitions. [2021-10-11 02:29:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:29:53,206 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:53,206 INFO L422 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, 1] [2021-10-11 02:29:53,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:29:53,206 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2144550399, now seen corresponding path program 1 times [2021-10-11 02:29:53,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:53,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66375975] [2021-10-11 02:29:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:29:53,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66375975] [2021-10-11 02:29:53,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:53,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:53,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117291230] [2021-10-11 02:29:53,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:53,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:53,257 INFO L87 Difference]: Start difference. First operand 929 states and 1199 transitions. Second operand 3 states. [2021-10-11 02:29:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:53,351 INFO L93 Difference]: Finished difference Result 1650 states and 2148 transitions. [2021-10-11 02:29:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:53,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2021-10-11 02:29:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:53,357 INFO L225 Difference]: With dead ends: 1650 [2021-10-11 02:29:53,357 INFO L226 Difference]: Without dead ends: 774 [2021-10-11 02:29:53,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-10-11 02:29:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2021-10-11 02:29:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2021-10-11 02:29:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 949 transitions. [2021-10-11 02:29:53,428 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 949 transitions. Word has length 60 [2021-10-11 02:29:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:53,428 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 949 transitions. [2021-10-11 02:29:53,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 949 transitions. [2021-10-11 02:29:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-11 02:29:53,430 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:53,430 INFO L422 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, 1, 1] [2021-10-11 02:29:53,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-11 02:29:53,430 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash -536169197, now seen corresponding path program 1 times [2021-10-11 02:29:53,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:53,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092394956] [2021-10-11 02:29:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:53,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:53,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:53,513 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:53,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:53,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-11 02:29:53,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:53 BoogieIcfgContainer [2021-10-11 02:29:53,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:53,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:53,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:53,652 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:53,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:48" (3/4) ... [2021-10-11 02:29:53,655 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:53,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368e0a60-ea58-4e5d-b6d7-8c1bcbf014fb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:53,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:53,788 INFO L168 Benchmark]: Toolchain (without parser) took 7853.65 ms. Allocated memory was 94.4 MB in the beginning and 283.1 MB in the end (delta: 188.7 MB). Free memory was 52.9 MB in the beginning and 141.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,788 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 94.4 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:53,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.96 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 52.7 MB in the beginning and 94.8 MB in the end (delta: -42.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 92.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,790 INFO L168 Benchmark]: Boogie Preprocessor took 43.96 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 89.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,790 INFO L168 Benchmark]: RCFGBuilder took 1710.42 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 89.9 MB in the beginning and 119.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,793 INFO L168 Benchmark]: TraceAbstraction took 5548.13 ms. Allocated memory was 151.0 MB in the beginning and 283.1 MB in the end (delta: 132.1 MB). Free memory was 118.5 MB in the beginning and 153.2 MB in the end (delta: -34.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,794 INFO L168 Benchmark]: Witness Printer took 134.36 ms. Allocated memory is still 283.1 MB. Free memory was 152.1 MB in the beginning and 141.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:53,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 94.4 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.96 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 52.7 MB in the beginning and 94.8 MB in the end (delta: -42.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 92.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.96 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 89.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1710.42 ms. Allocated memory was 121.6 MB in the beginning and 151.0 MB in the end (delta: 29.4 MB). Free memory was 89.9 MB in the beginning and 119.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5548.13 ms. Allocated memory was 151.0 MB in the beginning and 283.1 MB in the end (delta: 132.1 MB). Free memory was 118.5 MB in the beginning and 153.2 MB in the end (delta: -34.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.1 GB. * Witness Printer took 134.36 ms. Allocated memory is still 283.1 MB. Free memory was 152.1 MB in the beginning and 141.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 m_st ; [L21] int t1_st ; [L22] int t2_st ; [L23] int m_i ; [L24] int t1_i ; [L25] int t2_i ; [L26] int M_E = 2; [L27] int T1_E = 2; [L28] int T2_E = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L565] int __retres1 ; [L479] m_i = 1 [L480] t1_i = 1 [L481] t2_i = 1 [L506] int kernel_st ; [L507] int tmp ; [L508] int tmp___0 ; [L512] kernel_st = 0 [L213] COND TRUE m_i == 1 [L214] m_st = 0 [L218] COND TRUE t1_i == 1 [L219] t1_st = 0 [L223] COND TRUE t2_i == 1 [L224] t2_st = 0 [L326] COND FALSE !(M_E == 0) [L331] COND FALSE !(T1_E == 0) [L336] COND FALSE !(T2_E == 0) [L341] COND FALSE !(E_1 == 0) [L346] COND FALSE !(E_2 == 0) [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=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] [L148] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=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] [L158] __retres1 = 0 VAL [E_1=2, E_2=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] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=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] [L167] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=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] [L177] __retres1 = 0 VAL [E_1=2, E_2=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] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=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] [L186] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=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] [L196] __retres1 = 0 VAL [E_1=2, E_2=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] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L359] COND FALSE !(M_E == 1) [L364] COND FALSE !(T1_E == 1) [L369] COND FALSE !(T2_E == 1) [L374] COND FALSE !(E_1 == 1) [L379] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=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] [L520] COND TRUE 1 [L523] kernel_st = 1 [L259] int tmp ; VAL [E_1=2, E_2=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] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=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] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=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] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=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] [L80] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=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] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=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] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=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] [L115] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=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] [L126] COND TRUE 1 [L128] t2_pc = 1 [L129] t2_st = 2 VAL [E_1=2, E_2=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] [L263] COND TRUE 1 [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) VAL [E_1=2, E_2=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] [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp_ndt_1) [L278] m_st = 1 VAL [E_1=2, E_2=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] [L39] COND TRUE m_pc == 0 VAL [E_1=2, E_2=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] [L50] COND TRUE 1 [L53] E_1 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=1, E_2=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] [L148] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=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] [L158] __retres1 = 0 VAL [E_1=1, E_2=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] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=1, E_2=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] [L167] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=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] [L168] COND TRUE E_1 == 1 [L169] __retres1 = 1 VAL [E_1=1, E_2=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] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND TRUE \read(tmp___0) [L406] t1_st = 0 [L183] int __retres1 ; VAL [E_1=1, E_2=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] [L186] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=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] [L187] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=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] [L196] __retres1 = 0 VAL [E_1=1, E_2=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] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L55] E_1 = 2 VAL [E_1=2, E_2=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] [L58] COND TRUE 1 [L60] m_pc = 1 [L61] m_st = 2 VAL [E_1=2, E_2=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] [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND TRUE \read(tmp_ndt_2) [L292] t1_st = 1 VAL [E_1=2, E_2=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] [L80] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=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] [L83] COND TRUE t1_pc == 1 [L99] E_2 = 1 [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L145] int __retres1 ; VAL [E_1=2, E_2=1, 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] [L148] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, 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] [L149] COND FALSE !(M_E == 1) VAL [E_1=2, E_2=1, 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] [L158] __retres1 = 0 VAL [E_1=2, E_2=1, 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] [L160] return (__retres1); [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L164] int __retres1 ; VAL [E_1=2, E_2=1, 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] [L167] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, 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] [L168] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, 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] [L177] __retres1 = 0 VAL [E_1=2, E_2=1, 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] [L179] return (__retres1); [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L183] int __retres1 ; VAL [E_1=2, E_2=1, 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] [L186] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, 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] [L187] COND TRUE E_2 == 1 [L188] __retres1 = 1 VAL [E_1=2, E_2=1, 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] [L198] return (__retres1); [L411] tmp___1 = is_transmit2_triggered() [L413] COND TRUE \read(tmp___1) [L414] t2_st = 0 [L101] E_2 = 2 VAL [E_1=2, E_2=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] [L91] COND TRUE 1 [L93] t1_pc = 1 [L94] t1_st = 2 VAL [E_1=2, E_2=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] [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 VAL [E_1=2, E_2=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] [L115] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=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] [L118] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=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] [L13] reach_error() VAL [E_1=2, E_2=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] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 17, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2269 SDtfs, 1956 SDslu, 2072 SDs, 0 SdLazy, 389 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1288occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 1931 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 805 NumberOfCodeBlocks, 805 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 774 ConstructedInterpolants, 0 QuantifiedInterpolants, 68153 SizeOfPredicates, 6 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 170/171 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! Received shutdown request...