./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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 a08b839794d511e255b2cbb9b4715d014c32f56d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:24:34,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:34,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:34,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:34,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:34,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:34,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:34,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:34,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:34,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:34,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:34,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:34,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:34,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:34,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:34,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:34,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:34,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:34,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:34,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:34,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:34,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:34,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:34,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:34,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:34,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:34,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:34,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:34,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:34,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:34,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:34,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:34,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:34,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:34,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:34,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:34,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:34,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:34,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:34,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:34,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:35,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:35,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:35,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:35,016 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:35,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:35,017 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:35,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:35,017 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:35,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:35,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:35,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:35,018 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:35,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:35,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:35,019 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:35,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:35,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:35,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:35,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:35,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:35,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:35,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:35,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:35,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:35,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:35,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:35,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:35,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:35,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:35,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:35,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:35,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:35,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:35,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:35,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:35,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:35,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:35,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:35,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:35,027 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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a08b839794d511e255b2cbb9b4715d014c32f56d [2021-10-11 02:24:35,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:35,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:35,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:35,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:35,390 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:35,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2021-10-11 02:24:35,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/data/02917d1a3/11598387705444198fc05a536fbaf1c0/FLAG54d3d6ce7 [2021-10-11 02:24:35,990 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:35,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/sv-benchmarks/c/systemc/token_ring.02.cil-2.c [2021-10-11 02:24:36,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/data/02917d1a3/11598387705444198fc05a536fbaf1c0/FLAG54d3d6ce7 [2021-10-11 02:24:36,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/data/02917d1a3/11598387705444198fc05a536fbaf1c0 [2021-10-11 02:24:36,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:36,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:36,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:36,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:36,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:36,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f996c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36, skipping insertion in model container [2021-10-11 02:24:36,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:36,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:36,534 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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/sv-benchmarks/c/systemc/token_ring.02.cil-2.c[366,379] [2021-10-11 02:24:36,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:36,618 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:36,632 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_629698ad-0d04-4a71-85fa-0c11d18f8dc6/sv-benchmarks/c/systemc/token_ring.02.cil-2.c[366,379] [2021-10-11 02:24:36,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:36,695 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:36,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36 WrapperNode [2021-10-11 02:24:36,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:36,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:36,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:36,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:36,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:36,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:36,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:36,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:36,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... [2021-10-11 02:24:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:36,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:36,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:36,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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 02:24:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:39,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:39,425 INFO L299 CfgBuilder]: Removed 105 assume(true) statements. [2021-10-11 02:24:39,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39 BoogieIcfgContainer [2021-10-11 02:24:39,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:39,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:39,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:39,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:39,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:36" (1/3) ... [2021-10-11 02:24:39,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9be81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:36" (2/3) ... [2021-10-11 02:24:39,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9be81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/3) ... [2021-10-11 02:24:39,444 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2021-10-11 02:24:39,459 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:39,463 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:24:39,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:24:39,499 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:39,500 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:39,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:39,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:39,500 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:39,500 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:39,500 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:39,500 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2021-10-11 02:24:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:39,522 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:39,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:39,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1273911471, now seen corresponding path program 1 times [2021-10-11 02:24:39,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:39,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614016444] [2021-10-11 02:24:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:39,745 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 02:24:39,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614016444] [2021-10-11 02:24:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:39,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:39,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750666599] [2021-10-11 02:24:39,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:39,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:39,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:39,773 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2021-10-11 02:24:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:39,934 INFO L93 Difference]: Finished difference Result 285 states and 438 transitions. [2021-10-11 02:24:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:39,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:39,964 INFO L225 Difference]: With dead ends: 285 [2021-10-11 02:24:39,965 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 02:24:39,978 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 02:24:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 02:24:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2021-10-11 02:24:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-10-11 02:24:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2021-10-11 02:24:40,077 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 19 [2021-10-11 02:24:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,078 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2021-10-11 02:24:40,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2021-10-11 02:24:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-11 02:24:40,083 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,083 INFO L422 BasicCegarLoop]: trace histogram [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 02:24:40,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:40,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1551439930, now seen corresponding path program 1 times [2021-10-11 02:24:40,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698855608] [2021-10-11 02:24:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:24:40,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698855608] [2021-10-11 02:24:40,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:40,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449370071] [2021-10-11 02:24:40,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:40,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:40,189 INFO L87 Difference]: Start difference. First operand 168 states and 246 transitions. Second operand 4 states. [2021-10-11 02:24:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,392 INFO L93 Difference]: Finished difference Result 529 states and 768 transitions. [2021-10-11 02:24:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:40,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-10-11 02:24:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,402 INFO L225 Difference]: With dead ends: 529 [2021-10-11 02:24:40,404 INFO L226 Difference]: Without dead ends: 366 [2021-10-11 02:24:40,411 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 02:24:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-11 02:24:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 287. [2021-10-11 02:24:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:24:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 413 transitions. [2021-10-11 02:24:40,458 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 413 transitions. Word has length 36 [2021-10-11 02:24:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,471 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 413 transitions. [2021-10-11 02:24:40,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 413 transitions. [2021-10-11 02:24:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-11 02:24:40,474 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,475 INFO L422 BasicCegarLoop]: trace histogram [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 02:24:40,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:40,475 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1824552743, now seen corresponding path program 1 times [2021-10-11 02:24:40,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219161834] [2021-10-11 02:24:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219161834] [2021-10-11 02:24:40,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:40,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281879188] [2021-10-11 02:24:40,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:40,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:40,659 INFO L87 Difference]: Start difference. First operand 287 states and 413 transitions. Second operand 4 states. [2021-10-11 02:24:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,818 INFO L93 Difference]: Finished difference Result 901 states and 1285 transitions. [2021-10-11 02:24:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:40,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-10-11 02:24:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,824 INFO L225 Difference]: With dead ends: 901 [2021-10-11 02:24:40,825 INFO L226 Difference]: Without dead ends: 622 [2021-10-11 02:24:40,828 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 02:24:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-11 02:24:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 498. [2021-10-11 02:24:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2021-10-11 02:24:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 704 transitions. [2021-10-11 02:24:40,887 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 704 transitions. Word has length 36 [2021-10-11 02:24:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,887 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 704 transitions. [2021-10-11 02:24:40,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 704 transitions. [2021-10-11 02:24:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-11 02:24:40,891 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,892 INFO L422 BasicCegarLoop]: trace histogram [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 02:24:40,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:40,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1191089818, now seen corresponding path program 1 times [2021-10-11 02:24:40,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5209597] [2021-10-11 02:24:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5209597] [2021-10-11 02:24:41,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:41,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032984955] [2021-10-11 02:24:41,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:41,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:41,019 INFO L87 Difference]: Start difference. First operand 498 states and 704 transitions. Second operand 4 states. [2021-10-11 02:24:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,206 INFO L93 Difference]: Finished difference Result 1710 states and 2434 transitions. [2021-10-11 02:24:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:41,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-10-11 02:24:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,217 INFO L225 Difference]: With dead ends: 1710 [2021-10-11 02:24:41,217 INFO L226 Difference]: Without dead ends: 1222 [2021-10-11 02:24:41,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 02:24:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-10-11 02:24:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 910. [2021-10-11 02:24:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2021-10-11 02:24:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1280 transitions. [2021-10-11 02:24:41,276 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1280 transitions. Word has length 36 [2021-10-11 02:24:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,277 INFO L481 AbstractCegarLoop]: Abstraction has 910 states and 1280 transitions. [2021-10-11 02:24:41,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1280 transitions. [2021-10-11 02:24:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 02:24:41,281 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,282 INFO L422 BasicCegarLoop]: trace histogram [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 02:24:41,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:41,283 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1337019147, now seen corresponding path program 1 times [2021-10-11 02:24:41,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392143609] [2021-10-11 02:24:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392143609] [2021-10-11 02:24:41,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:41,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554014169] [2021-10-11 02:24:41,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:41,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:41,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:41,458 INFO L87 Difference]: Start difference. First operand 910 states and 1280 transitions. Second operand 4 states. [2021-10-11 02:24:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,681 INFO L93 Difference]: Finished difference Result 3068 states and 4336 transitions. [2021-10-11 02:24:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:41,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2021-10-11 02:24:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,698 INFO L225 Difference]: With dead ends: 3068 [2021-10-11 02:24:41,698 INFO L226 Difference]: Without dead ends: 2168 [2021-10-11 02:24:41,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 02:24:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-10-11 02:24:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1662. [2021-10-11 02:24:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2021-10-11 02:24:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2316 transitions. [2021-10-11 02:24:41,803 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2316 transitions. Word has length 37 [2021-10-11 02:24:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,803 INFO L481 AbstractCegarLoop]: Abstraction has 1662 states and 2316 transitions. [2021-10-11 02:24:41,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2316 transitions. [2021-10-11 02:24:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:24:41,807 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,807 INFO L422 BasicCegarLoop]: trace histogram [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 02:24:41,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:41,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash 202332346, now seen corresponding path program 1 times [2021-10-11 02:24:41,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880289513] [2021-10-11 02:24:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880289513] [2021-10-11 02:24:41,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:41,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233466770] [2021-10-11 02:24:41,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:41,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:41,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:41,867 INFO L87 Difference]: Start difference. First operand 1662 states and 2316 transitions. Second operand 3 states. [2021-10-11 02:24:42,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,049 INFO L93 Difference]: Finished difference Result 2910 states and 4146 transitions. [2021-10-11 02:24:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:42,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-10-11 02:24:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,069 INFO L225 Difference]: With dead ends: 2910 [2021-10-11 02:24:42,069 INFO L226 Difference]: Without dead ends: 1910 [2021-10-11 02:24:42,072 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 02:24:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-10-11 02:24:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1798. [2021-10-11 02:24:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2021-10-11 02:24:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2524 transitions. [2021-10-11 02:24:42,185 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2524 transitions. Word has length 38 [2021-10-11 02:24:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,191 INFO L481 AbstractCegarLoop]: Abstraction has 1798 states and 2524 transitions. [2021-10-11 02:24:42,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2524 transitions. [2021-10-11 02:24:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-11 02:24:42,198 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,198 INFO L422 BasicCegarLoop]: trace histogram [3, 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 02:24:42,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:42,198 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2093916787, now seen corresponding path program 1 times [2021-10-11 02:24:42,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675728542] [2021-10-11 02:24:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:42,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675728542] [2021-10-11 02:24:42,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:42,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083315384] [2021-10-11 02:24:42,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:42,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:42,332 INFO L87 Difference]: Start difference. First operand 1798 states and 2524 transitions. Second operand 3 states. [2021-10-11 02:24:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,469 INFO L93 Difference]: Finished difference Result 3078 states and 4354 transitions. [2021-10-11 02:24:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:42,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2021-10-11 02:24:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,483 INFO L225 Difference]: With dead ends: 3078 [2021-10-11 02:24:42,483 INFO L226 Difference]: Without dead ends: 1942 [2021-10-11 02:24:42,488 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 02:24:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-10-11 02:24:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1798. [2021-10-11 02:24:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2021-10-11 02:24:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2436 transitions. [2021-10-11 02:24:42,596 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2436 transitions. Word has length 54 [2021-10-11 02:24:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,598 INFO L481 AbstractCegarLoop]: Abstraction has 1798 states and 2436 transitions. [2021-10-11 02:24:42,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2436 transitions. [2021-10-11 02:24:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-11 02:24:42,603 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,604 INFO L422 BasicCegarLoop]: trace histogram [3, 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 02:24:42,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:42,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1227561550, now seen corresponding path program 1 times [2021-10-11 02:24:42,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809748254] [2021-10-11 02:24:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:42,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809748254] [2021-10-11 02:24:42,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:42,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112103939] [2021-10-11 02:24:42,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:42,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:42,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:42,715 INFO L87 Difference]: Start difference. First operand 1798 states and 2436 transitions. Second operand 5 states. [2021-10-11 02:24:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,953 INFO L93 Difference]: Finished difference Result 3336 states and 4546 transitions. [2021-10-11 02:24:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:42,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-10-11 02:24:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,963 INFO L225 Difference]: With dead ends: 3336 [2021-10-11 02:24:42,963 INFO L226 Difference]: Without dead ends: 1548 [2021-10-11 02:24:42,966 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 02:24:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-11 02:24:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1383. [2021-10-11 02:24:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2021-10-11 02:24:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1901 transitions. [2021-10-11 02:24:43,049 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1901 transitions. Word has length 54 [2021-10-11 02:24:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:43,050 INFO L481 AbstractCegarLoop]: Abstraction has 1383 states and 1901 transitions. [2021-10-11 02:24:43,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1901 transitions. [2021-10-11 02:24:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:24:43,054 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:43,054 INFO L422 BasicCegarLoop]: trace histogram [3, 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 02:24:43,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:43,054 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:43,055 INFO L82 PathProgramCache]: Analyzing trace with hash 114756858, now seen corresponding path program 1 times [2021-10-11 02:24:43,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:43,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531562631] [2021-10-11 02:24:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:24:43,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531562631] [2021-10-11 02:24:43,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37355549] [2021-10-11 02:24:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/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 02:24:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:43,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:24:43,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:43,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:43,655 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:24:43,659 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:24:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:43,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:43,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:24:43,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889980536] [2021-10-11 02:24:43,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:43,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:43,725 INFO L87 Difference]: Start difference. First operand 1383 states and 1901 transitions. Second operand 3 states. [2021-10-11 02:24:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:43,853 INFO L93 Difference]: Finished difference Result 2755 states and 3791 transitions. [2021-10-11 02:24:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:43,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:24:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:43,868 INFO L225 Difference]: With dead ends: 2755 [2021-10-11 02:24:43,868 INFO L226 Difference]: Without dead ends: 1383 [2021-10-11 02:24:43,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-10-11 02:24:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2021-10-11 02:24:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2021-10-11 02:24:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1873 transitions. [2021-10-11 02:24:44,005 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1873 transitions. Word has length 56 [2021-10-11 02:24:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:44,006 INFO L481 AbstractCegarLoop]: Abstraction has 1383 states and 1873 transitions. [2021-10-11 02:24:44,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1873 transitions. [2021-10-11 02:24:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:24:44,013 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:44,013 INFO L422 BasicCegarLoop]: trace histogram [3, 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 02:24:44,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:24:44,228 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:44,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1255108569, now seen corresponding path program 1 times [2021-10-11 02:24:44,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:44,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492163798] [2021-10-11 02:24:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:44,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492163798] [2021-10-11 02:24:44,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:44,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286659790] [2021-10-11 02:24:44,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:44,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:44,290 INFO L87 Difference]: Start difference. First operand 1383 states and 1873 transitions. Second operand 3 states. [2021-10-11 02:24:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:44,399 INFO L93 Difference]: Finished difference Result 2315 states and 3145 transitions. [2021-10-11 02:24:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:44,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:24:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:44,406 INFO L225 Difference]: With dead ends: 2315 [2021-10-11 02:24:44,406 INFO L226 Difference]: Without dead ends: 943 [2021-10-11 02:24:44,409 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 02:24:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-10-11 02:24:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 926. [2021-10-11 02:24:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:24:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1208 transitions. [2021-10-11 02:24:44,473 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1208 transitions. Word has length 56 [2021-10-11 02:24:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:44,473 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1208 transitions. [2021-10-11 02:24:44,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1208 transitions. [2021-10-11 02:24:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-11 02:24:44,476 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:44,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:44,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:24:44,477 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:44,477 INFO L82 PathProgramCache]: Analyzing trace with hash 423527735, now seen corresponding path program 1 times [2021-10-11 02:24:44,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:44,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137346037] [2021-10-11 02:24:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:24:44,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137346037] [2021-10-11 02:24:44,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090036936] [2021-10-11 02:24:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:44,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 02:24:44,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:44,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:44,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324747267] [2021-10-11 02:24:45,011 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-10-11 02:24:45,011 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:45,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:45,024 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:45,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:46,321 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2021-10-11 02:24:46,578 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-10-11 02:24:46,794 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2021-10-11 02:24:47,075 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 250 [2021-10-11 02:24:47,616 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-10-11 02:24:47,835 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-10-11 02:24:48,069 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-10-11 02:24:48,285 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2021-10-11 02:24:48,882 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2021-10-11 02:24:49,142 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2021-10-11 02:24:49,750 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 251 [2021-10-11 02:24:50,186 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2021-10-11 02:24:50,297 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-10-11 02:24:50,402 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-10-11 02:24:50,672 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 251 [2021-10-11 02:24:51,078 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 251 [2021-10-11 02:24:51,231 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2021-10-11 02:24:51,482 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 223 [2021-10-11 02:24:51,860 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 227 [2021-10-11 02:24:52,575 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:24:53,805 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 231 DAG size of output: 112 [2021-10-11 02:24:54,137 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-10-11 02:24:54,549 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-10-11 02:24:54,987 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2021-10-11 02:24:55,442 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2021-10-11 02:24:55,913 WARN L197 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2021-10-11 02:24:56,467 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2021-10-11 02:24:56,909 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 102 [2021-10-11 02:24:58,933 WARN L197 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 251 DAG size of output: 139 [2021-10-11 02:25:01,304 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 251 DAG size of output: 142 [2021-10-11 02:25:02,825 WARN L197 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 233 DAG size of output: 102 [2021-10-11 02:25:04,172 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 223 DAG size of output: 105 [2021-10-11 02:25:05,138 WARN L197 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 109 [2021-10-11 02:25:06,129 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 109 [2021-10-11 02:25:06,944 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 100 [2021-10-11 02:25:07,896 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 102 [2021-10-11 02:25:08,804 WARN L197 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 99 [2021-10-11 02:25:09,982 WARN L197 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 114 [2021-10-11 02:25:11,122 WARN L197 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 117 [2021-10-11 02:25:12,149 WARN L197 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 128 [2021-10-11 02:25:13,291 WARN L197 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 130 [2021-10-11 02:25:13,981 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 124 [2021-10-11 02:25:14,695 WARN L197 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 128 [2021-10-11 02:25:15,454 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2021-10-11 02:25:16,164 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2021-10-11 02:25:16,874 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 134 [2021-10-11 02:25:17,803 WARN L197 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 112 [2021-10-11 02:25:17,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:17,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:17,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-11 02:25:17,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803154119] [2021-10-11 02:25:17,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:25:17,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:25:17,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:25:17,976 INFO L87 Difference]: Start difference. First operand 926 states and 1208 transitions. Second operand 11 states. [2021-10-11 02:25:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:18,870 INFO L93 Difference]: Finished difference Result 2805 states and 3699 transitions. [2021-10-11 02:25:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 02:25:18,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2021-10-11 02:25:18,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:18,883 INFO L225 Difference]: With dead ends: 2805 [2021-10-11 02:25:18,884 INFO L226 Difference]: Without dead ends: 1911 [2021-10-11 02:25:18,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2021-10-11 02:25:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-10-11 02:25:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 966. [2021-10-11 02:25:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2021-10-11 02:25:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1272 transitions. [2021-10-11 02:25:18,958 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1272 transitions. Word has length 57 [2021-10-11 02:25:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:18,958 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1272 transitions. [2021-10-11 02:25:18,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:25:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1272 transitions. [2021-10-11 02:25:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-11 02:25:18,961 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:18,961 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:19,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:19,187 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:19,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1080521014, now seen corresponding path program 1 times [2021-10-11 02:25:19,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:19,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481198049] [2021-10-11 02:25:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:19,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481198049] [2021-10-11 02:25:19,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:19,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:19,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840081885] [2021-10-11 02:25:19,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:19,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:19,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:19,271 INFO L87 Difference]: Start difference. First operand 966 states and 1272 transitions. Second operand 3 states. [2021-10-11 02:25:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:19,353 INFO L93 Difference]: Finished difference Result 1681 states and 2226 transitions. [2021-10-11 02:25:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:19,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2021-10-11 02:25:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:19,359 INFO L225 Difference]: With dead ends: 1681 [2021-10-11 02:25:19,359 INFO L226 Difference]: Without dead ends: 747 [2021-10-11 02:25:19,361 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 02:25:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-10-11 02:25:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 732. [2021-10-11 02:25:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2021-10-11 02:25:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 939 transitions. [2021-10-11 02:25:19,409 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 939 transitions. Word has length 59 [2021-10-11 02:25:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:19,409 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 939 transitions. [2021-10-11 02:25:19,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 939 transitions. [2021-10-11 02:25:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-11 02:25:19,414 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:19,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:19,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-11 02:25:19,421 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -10097335, now seen corresponding path program 1 times [2021-10-11 02:25:19,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:19,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519793641] [2021-10-11 02:25:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:19,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519793641] [2021-10-11 02:25:19,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260371028] [2021-10-11 02:25:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:19,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:25:19,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:19,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:19,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:19,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [8] total 10 [2021-10-11 02:25:19,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928009791] [2021-10-11 02:25:19,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:19,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:25:19,955 INFO L87 Difference]: Start difference. First operand 732 states and 939 transitions. Second operand 4 states. [2021-10-11 02:25:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:20,042 INFO L93 Difference]: Finished difference Result 1291 states and 1655 transitions. [2021-10-11 02:25:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:20,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2021-10-11 02:25:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:20,049 INFO L225 Difference]: With dead ends: 1291 [2021-10-11 02:25:20,049 INFO L226 Difference]: Without dead ends: 738 [2021-10-11 02:25:20,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:25:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-11 02:25:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 732. [2021-10-11 02:25:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2021-10-11 02:25:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 923 transitions. [2021-10-11 02:25:20,104 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 923 transitions. Word has length 59 [2021-10-11 02:25:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:20,105 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 923 transitions. [2021-10-11 02:25:20,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 923 transitions. [2021-10-11 02:25:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:25:20,107 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:20,107 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:20,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:20,324 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:20,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:20,325 INFO L82 PathProgramCache]: Analyzing trace with hash 417132549, now seen corresponding path program 1 times [2021-10-11 02:25:20,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:20,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552512256] [2021-10-11 02:25:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552512256] [2021-10-11 02:25:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722076145] [2021-10-11 02:25:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:20,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:25:20,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:20,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:20,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:20,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [8] total 10 [2021-10-11 02:25:20,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709157474] [2021-10-11 02:25:20,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:20,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:20,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:25:20,775 INFO L87 Difference]: Start difference. First operand 732 states and 923 transitions. Second operand 4 states. [2021-10-11 02:25:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:20,857 INFO L93 Difference]: Finished difference Result 1205 states and 1525 transitions. [2021-10-11 02:25:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:20,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2021-10-11 02:25:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:20,863 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:25:20,863 INFO L226 Difference]: Without dead ends: 758 [2021-10-11 02:25:20,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:25:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-11 02:25:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 732. [2021-10-11 02:25:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2021-10-11 02:25:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2021-10-11 02:25:20,919 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 60 [2021-10-11 02:25:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:20,919 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2021-10-11 02:25:20,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2021-10-11 02:25:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:25:20,922 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:20,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:21,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:21,143 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -639151278, now seen corresponding path program 1 times [2021-10-11 02:25:21,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:21,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251414196] [2021-10-11 02:25:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251414196] [2021-10-11 02:25:21,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271546968] [2021-10-11 02:25:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:21,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:21,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:21,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:21,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:25:21,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597231202] [2021-10-11 02:25:21,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:21,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:21,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:21,437 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 4 states. [2021-10-11 02:25:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:21,537 INFO L93 Difference]: Finished difference Result 1468 states and 1817 transitions. [2021-10-11 02:25:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:21,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2021-10-11 02:25:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:21,544 INFO L225 Difference]: With dead ends: 1468 [2021-10-11 02:25:21,544 INFO L226 Difference]: Without dead ends: 899 [2021-10-11 02:25:21,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-10-11 02:25:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 739. [2021-10-11 02:25:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2021-10-11 02:25:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 919 transitions. [2021-10-11 02:25:21,600 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 919 transitions. Word has length 60 [2021-10-11 02:25:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:21,601 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 919 transitions. [2021-10-11 02:25:21,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 919 transitions. [2021-10-11 02:25:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-11 02:25:21,603 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:21,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:21,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:21,827 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1559432333, now seen corresponding path program 1 times [2021-10-11 02:25:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:21,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104444898] [2021-10-11 02:25:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:25:21,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104444898] [2021-10-11 02:25:21,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:21,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:21,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094770552] [2021-10-11 02:25:21,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:21,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:21,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:21,884 INFO L87 Difference]: Start difference. First operand 739 states and 919 transitions. Second operand 4 states. [2021-10-11 02:25:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:22,024 INFO L93 Difference]: Finished difference Result 1316 states and 1625 transitions. [2021-10-11 02:25:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:22,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2021-10-11 02:25:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:22,031 INFO L225 Difference]: With dead ends: 1316 [2021-10-11 02:25:22,031 INFO L226 Difference]: Without dead ends: 874 [2021-10-11 02:25:22,033 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 02:25:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-11 02:25:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 795. [2021-10-11 02:25:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2021-10-11 02:25:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 962 transitions. [2021-10-11 02:25:22,097 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 962 transitions. Word has length 61 [2021-10-11 02:25:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:22,097 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 962 transitions. [2021-10-11 02:25:22,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 962 transitions. [2021-10-11 02:25:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-11 02:25:22,100 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:22,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-10-11 02:25:22,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-10-11 02:25:22,101 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1587612423, now seen corresponding path program 1 times [2021-10-11 02:25:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:22,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744121313] [2021-10-11 02:25:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:25:22,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744121313] [2021-10-11 02:25:22,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:22,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:22,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791608408] [2021-10-11 02:25:22,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:22,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:22,141 INFO L87 Difference]: Start difference. First operand 795 states and 962 transitions. Second operand 4 states. [2021-10-11 02:25:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:22,298 INFO L93 Difference]: Finished difference Result 1714 states and 2078 transitions. [2021-10-11 02:25:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:22,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2021-10-11 02:25:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:22,305 INFO L225 Difference]: With dead ends: 1714 [2021-10-11 02:25:22,305 INFO L226 Difference]: Without dead ends: 930 [2021-10-11 02:25:22,307 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 02:25:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-10-11 02:25:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 841. [2021-10-11 02:25:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2021-10-11 02:25:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 991 transitions. [2021-10-11 02:25:22,374 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 991 transitions. Word has length 61 [2021-10-11 02:25:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:22,375 INFO L481 AbstractCegarLoop]: Abstraction has 841 states and 991 transitions. [2021-10-11 02:25:22,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 991 transitions. [2021-10-11 02:25:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-11 02:25:22,377 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:22,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-10-11 02:25:22,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-10-11 02:25:22,377 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1044305336, now seen corresponding path program 1 times [2021-10-11 02:25:22,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:22,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442472160] [2021-10-11 02:25:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:22,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442472160] [2021-10-11 02:25:22,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:22,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:22,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74143180] [2021-10-11 02:25:22,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:22,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:22,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:22,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:22,453 INFO L87 Difference]: Start difference. First operand 841 states and 991 transitions. Second operand 4 states. [2021-10-11 02:25:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:22,632 INFO L93 Difference]: Finished difference Result 1801 states and 2104 transitions. [2021-10-11 02:25:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:22,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-10-11 02:25:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:22,640 INFO L225 Difference]: With dead ends: 1801 [2021-10-11 02:25:22,641 INFO L226 Difference]: Without dead ends: 1113 [2021-10-11 02:25:22,642 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 02:25:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-10-11 02:25:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 929. [2021-10-11 02:25:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2021-10-11 02:25:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1076 transitions. [2021-10-11 02:25:22,715 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1076 transitions. Word has length 62 [2021-10-11 02:25:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:22,716 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1076 transitions. [2021-10-11 02:25:22,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:22,716 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1076 transitions. [2021-10-11 02:25:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:25:22,718 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:22,718 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 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 02:25:22,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-10-11 02:25:22,719 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:22,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:22,719 INFO L82 PathProgramCache]: Analyzing trace with hash -382676161, now seen corresponding path program 1 times [2021-10-11 02:25:22,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:22,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713742775] [2021-10-11 02:25:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:22,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713742775] [2021-10-11 02:25:22,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328371982] [2021-10-11 02:25:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:22,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:22,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:22,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:23,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:23,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:25:23,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170196822] [2021-10-11 02:25:23,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:23,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:23,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:23,053 INFO L87 Difference]: Start difference. First operand 929 states and 1076 transitions. Second operand 4 states. [2021-10-11 02:25:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:23,171 INFO L93 Difference]: Finished difference Result 1877 states and 2190 transitions. [2021-10-11 02:25:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:23,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2021-10-11 02:25:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:23,178 INFO L225 Difference]: With dead ends: 1877 [2021-10-11 02:25:23,178 INFO L226 Difference]: Without dead ends: 1031 [2021-10-11 02:25:23,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-10-11 02:25:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 896. [2021-10-11 02:25:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2021-10-11 02:25:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1046 transitions. [2021-10-11 02:25:23,244 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1046 transitions. Word has length 77 [2021-10-11 02:25:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:23,245 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1046 transitions. [2021-10-11 02:25:23,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1046 transitions. [2021-10-11 02:25:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-11 02:25:23,247 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:23,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:23,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:23,460 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash 127177078, now seen corresponding path program 1 times [2021-10-11 02:25:23,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:23,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896643423] [2021-10-11 02:25:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:25:23,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896643423] [2021-10-11 02:25:23,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:23,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:23,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440028704] [2021-10-11 02:25:23,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:23,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:23,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:23,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:23,565 INFO L87 Difference]: Start difference. First operand 896 states and 1046 transitions. Second operand 5 states. [2021-10-11 02:25:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:23,741 INFO L93 Difference]: Finished difference Result 2535 states and 2945 transitions. [2021-10-11 02:25:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:23,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2021-10-11 02:25:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:23,753 INFO L225 Difference]: With dead ends: 2535 [2021-10-11 02:25:23,753 INFO L226 Difference]: Without dead ends: 1883 [2021-10-11 02:25:23,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-10-11 02:25:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1446. [2021-10-11 02:25:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2021-10-11 02:25:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1693 transitions. [2021-10-11 02:25:23,906 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1693 transitions. Word has length 79 [2021-10-11 02:25:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:23,906 INFO L481 AbstractCegarLoop]: Abstraction has 1446 states and 1693 transitions. [2021-10-11 02:25:23,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1693 transitions. [2021-10-11 02:25:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-11 02:25:23,908 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:23,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:23,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-11 02:25:23,908 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1259179990, now seen corresponding path program 1 times [2021-10-11 02:25:23,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:23,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057529776] [2021-10-11 02:25:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:23,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:23,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:24,037 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:25:24,037 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:25:24,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-10-11 02:25:24,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:24 BoogieIcfgContainer [2021-10-11 02:25:24,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:24,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:24,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:24,200 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:24,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/4) ... [2021-10-11 02:25:24,202 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:25:24,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_629698ad-0d04-4a71-85fa-0c11d18f8dc6/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:24,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:24,331 INFO L168 Benchmark]: Toolchain (without parser) took 48006.13 ms. Allocated memory was 96.5 MB in the beginning and 587.2 MB in the end (delta: 490.7 MB). Free memory was 58.8 MB in the beginning and 504.2 MB in the end (delta: -445.4 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,331 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:24,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.85 ms. Allocated memory is still 96.5 MB. Free memory was 58.6 MB in the beginning and 44.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.65 ms. Allocated memory is still 96.5 MB. Free memory was 44.7 MB in the beginning and 74.6 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,333 INFO L168 Benchmark]: Boogie Preprocessor took 58.85 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 71.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,333 INFO L168 Benchmark]: RCFGBuilder took 2565.23 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 71.8 MB in the beginning and 97.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 56.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,334 INFO L168 Benchmark]: TraceAbstraction took 44763.30 ms. Allocated memory was 123.7 MB in the beginning and 587.2 MB in the end (delta: 463.5 MB). Free memory was 97.1 MB in the beginning and 519.9 MB in the end (delta: -422.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,334 INFO L168 Benchmark]: Witness Printer took 130.42 ms. Allocated memory is still 587.2 MB. Free memory was 519.9 MB in the beginning and 504.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:24,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.85 ms. Allocated memory is still 96.5 MB. Free memory was 58.6 MB in the beginning and 44.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.65 ms. Allocated memory is still 96.5 MB. Free memory was 44.7 MB in the beginning and 74.6 MB in the end (delta: -30.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.85 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 71.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2565.23 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 71.8 MB in the beginning and 97.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 56.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44763.30 ms. Allocated memory was 123.7 MB in the beginning and 587.2 MB in the end (delta: 463.5 MB). Free memory was 97.1 MB in the beginning and 519.9 MB in the end (delta: -422.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. * Witness Printer took 130.42 ms. Allocated memory is still 587.2 MB. Free memory was 519.9 MB in the beginning and 504.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int m_pc = 0; [L17] int t1_pc = 0; [L18] int t2_pc = 0; [L19] int m_st ; [L20] int t1_st ; [L21] int t2_st ; [L22] int m_i ; [L23] int t1_i ; [L24] int t2_i ; [L25] int M_E = 2; [L26] int T1_E = 2; [L27] int T2_E = 2; [L28] int E_M = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L35] int token ; [L37] int local ; [L602] int __retres1 ; [L516] m_i = 1 [L517] t1_i = 1 [L518] t2_i = 1 [L543] int kernel_st ; [L544] int tmp ; [L545] int tmp___0 ; [L549] kernel_st = 0 [L235] COND TRUE m_i == 1 [L236] m_st = 0 [L240] COND TRUE t1_i == 1 [L241] t1_st = 0 [L245] COND TRUE t2_i == 1 [L246] t2_st = 0 [L348] COND FALSE !(M_E == 0) [L353] COND FALSE !(T1_E == 0) [L358] COND FALSE !(T2_E == 0) [L363] COND FALSE !(E_M == 0) [L368] COND FALSE !(E_1 == 0) [L373] COND FALSE !(E_2 == 0) [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L167] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L170] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L180] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L182] return (__retres1); [L427] tmp = is_master_triggered() [L429] COND FALSE !(\read(tmp)) [L186] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L189] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L199] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L201] return (__retres1); [L435] tmp___0 = is_transmit1_triggered() [L437] COND FALSE !(\read(tmp___0)) [L205] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L208] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L218] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L220] return (__retres1); [L443] tmp___1 = is_transmit2_triggered() [L445] COND FALSE !(\read(tmp___1)) [L386] COND FALSE !(M_E == 1) [L391] COND FALSE !(T1_E == 1) [L396] COND FALSE !(T2_E == 1) [L401] COND FALSE !(E_M == 1) [L406] COND FALSE !(E_1 == 1) [L411] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L557] COND TRUE 1 [L560] kernel_st = 1 [L281] int tmp ; VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L285] COND TRUE 1 [L255] int __retres1 ; [L258] COND TRUE m_st == 0 [L259] __retres1 = 1 [L276] return (__retres1); [L288] tmp = exists_runnable_thread() [L290] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L295] COND TRUE m_st == 0 [L296] int tmp_ndt_1; [L297] tmp_ndt_1 = __VERIFIER_nondet_int() [L298] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L309] COND TRUE t1_st == 0 [L310] int tmp_ndt_2; [L311] tmp_ndt_2 = __VERIFIER_nondet_int() [L312] COND TRUE \read(tmp_ndt_2) [L314] t1_st = 1 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L98] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L109] COND TRUE 1 [L111] t1_pc = 1 [L112] t1_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L323] COND TRUE t2_st == 0 [L324] int tmp_ndt_3; [L325] tmp_ndt_3 = __VERIFIER_nondet_int() [L326] COND TRUE \read(tmp_ndt_3) [L328] t2_st = 1 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L134] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L145] COND TRUE 1 [L147] t2_pc = 1 [L148] t2_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L285] COND TRUE 1 [L255] int __retres1 ; [L258] COND TRUE m_st == 0 [L259] __retres1 = 1 [L276] return (__retres1); [L288] tmp = exists_runnable_thread() [L290] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L295] COND TRUE m_st == 0 [L296] int tmp_ndt_1; [L297] tmp_ndt_1 = __VERIFIER_nondet_int() [L298] COND TRUE \read(tmp_ndt_1) [L300] m_st = 1 [L40] int tmp_var = __VERIFIER_nondet_int(); [L42] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L53] COND TRUE 1 [L56] token = __VERIFIER_nondet_int() [L57] local = token [L58] E_1 = 1 [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L167] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L170] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L180] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L182] return (__retres1); [L427] tmp = is_master_triggered() [L429] COND FALSE !(\read(tmp)) [L186] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L189] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L190] COND TRUE E_1 == 1 [L191] __retres1 = 1 VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L201] return (__retres1); [L435] tmp___0 = is_transmit1_triggered() [L437] COND TRUE \read(tmp___0) [L438] t1_st = 0 [L205] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L208] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L209] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L218] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, local=0, 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, token=0] [L220] return (__retres1); [L443] tmp___1 = is_transmit2_triggered() [L445] COND FALSE !(\read(tmp___1)) [L60] E_1 = 2 [L61] m_pc = 1 [L62] m_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L309] COND TRUE t1_st == 0 [L310] int tmp_ndt_2; [L311] tmp_ndt_2 = __VERIFIER_nondet_int() [L312] COND TRUE \read(tmp_ndt_2) [L314] t1_st = 1 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L98] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=0] [L101] COND TRUE t1_pc == 1 [L117] token += 1 [L118] E_2 = 1 [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L167] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L170] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L171] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L180] __retres1 = 0 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L182] return (__retres1); [L427] tmp = is_master_triggered() [L429] COND FALSE !(\read(tmp)) [L186] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L189] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L190] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L199] __retres1 = 0 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L201] return (__retres1); [L435] tmp___0 = is_transmit1_triggered() [L437] COND FALSE !(\read(tmp___0)) [L205] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L208] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L209] COND TRUE E_2 == 1 [L210] __retres1 = 1 VAL [E_1=2, E_2=1, E_M=2, local=0, 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, token=1] [L220] return (__retres1); [L443] tmp___1 = is_transmit2_triggered() [L445] COND TRUE \read(tmp___1) [L446] t2_st = 0 [L120] E_2 = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=1] [L109] COND TRUE 1 [L111] t1_pc = 1 [L112] t1_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=1] [L323] COND TRUE t2_st == 0 [L324] int tmp_ndt_3; [L325] tmp_ndt_3 = __VERIFIER_nondet_int() [L326] COND TRUE \read(tmp_ndt_3) [L328] t2_st = 1 VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=1] [L134] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, 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, token=1] [L137] COND TRUE t2_pc == 1 [L153] token += 1 [L154] E_M = 1 [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L167] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, local=0, 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, token=2] [L170] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_M=1, local=0, 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, token=2] [L171] COND TRUE E_M == 1 [L172] __retres1 = 1 VAL [E_1=2, E_2=2, E_M=1, local=0, 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, token=2] [L182] return (__retres1); [L427] tmp = is_master_triggered() [L429] COND TRUE \read(tmp) [L430] m_st = 0 [L186] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L189] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L190] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L199] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L201] return (__retres1); [L435] tmp___0 = is_transmit1_triggered() [L437] COND FALSE !(\read(tmp___0)) [L205] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L208] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L209] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L218] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L220] return (__retres1); [L443] tmp___1 = is_transmit2_triggered() [L445] COND FALSE !(\read(tmp___1)) [L156] E_M = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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=1, token=2] [L145] COND TRUE 1 [L147] t2_pc = 1 [L148] t2_st = 2 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L285] COND TRUE 1 [L255] int __retres1 ; [L258] COND TRUE m_st == 0 [L259] __retres1 = 1 [L276] return (__retres1); [L288] tmp = exists_runnable_thread() [L290] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L295] COND TRUE m_st == 0 [L296] int tmp_ndt_1; [L297] tmp_ndt_1 = __VERIFIER_nondet_int() [L298] COND TRUE \read(tmp_ndt_1) [L300] m_st = 1 [L40] int tmp_var = __VERIFIER_nondet_int(); [L42] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L45] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L67] COND FALSE !(token != local + 2) [L72] COND TRUE tmp_var <= 5 [L73] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L78] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L79] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L80] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] [L12] reach_error() VAL [E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, 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, token=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.5s, OverallIterations: 21, TraceHistogramMax: 3, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3358 SDtfs, 3903 SDslu, 4006 SDs, 0 SdLazy, 833 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 907 GetRequests, 784 SyntacticMatches, 9 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1798occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 3545 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1508 NumberOfCodeBlocks, 1508 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1763 ConstructedInterpolants, 0 QuantifiedInterpolants, 232486 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1848 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 32 InterpolantComputations, 24 PerfectInterpolantSequences, 347/360 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...