./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan --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 a0fd1ce32e60332058e6b414d36029fafca9079a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:00:02,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:00:02,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:00:02,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:00:02,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:00:03,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:00:03,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:00:03,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:00:03,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:00:03,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:00:03,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:00:03,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:00:03,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:00:03,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:00:03,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:00:03,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:00:03,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:00:03,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:00:03,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:00:03,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:00:03,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:00:03,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:00:03,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:00:03,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:00:03,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:00:03,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:00:03,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:00:03,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:00:03,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:00:03,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:00:03,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:00:03,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:00:03,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:00:03,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:00:03,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:00:03,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:00:03,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:00:03,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:00:03,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:00:03,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:00:03,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:00:03,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:00:03,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:00:03,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:00:03,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:00:03,063 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:00:03,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:00:03,063 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:00:03,064 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:00:03,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:00:03,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:00:03,065 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:00:03,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:00:03,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:00:03,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:00:03,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:00:03,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:00:03,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:00:03,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:00:03,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:00:03,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:00:03,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:00:03,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:03,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:00:03,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:00:03,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:00:03,070 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-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0fd1ce32e60332058e6b414d36029fafca9079a [2020-12-09 10:00:03,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:00:03,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:00:03,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:00:03,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:00:03,268 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:00:03,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i [2020-12-09 10:00:03,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/data/49c7b23ae/4f366496f9794027a284306cdc106508/FLAGcd0b9d49a [2020-12-09 10:00:03,720 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:00:03,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i [2020-12-09 10:00:03,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/data/49c7b23ae/4f366496f9794027a284306cdc106508/FLAGcd0b9d49a [2020-12-09 10:00:03,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/data/49c7b23ae/4f366496f9794027a284306cdc106508 [2020-12-09 10:00:03,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:00:03,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:00:03,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:03,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:00:03,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:00:03,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:03" (1/1) ... [2020-12-09 10:00:03,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69be5779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:03, skipping insertion in model container [2020-12-09 10:00:03,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:03" (1/1) ... [2020-12-09 10:00:03,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:00:03,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:00:03,897 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i[949,962] [2020-12-09 10:00:03,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:04,000 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:00:04,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/sv-benchmarks/c/pthread-wmm/safe022_tso.opt.i[949,962] [2020-12-09 10:00:04,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:04,091 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:00:04,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04 WrapperNode [2020-12-09 10:00:04,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:04,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:04,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:00:04,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:00:04,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:04,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:00:04,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:00:04,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:00:04,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... [2020-12-09 10:00:04,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:00:04,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:00:04,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:00:04,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:00:04,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/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 [2020-12-09 10:00:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 10:00:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 10:00:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:00:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:00:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 10:00:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 10:00:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 10:00:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 10:00:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:00:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 10:00:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:00:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:00:04,221 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 10:00:04,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:00:04,490 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 10:00:04,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:04 BoogieIcfgContainer [2020-12-09 10:00:04,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:00:04,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:00:04,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:00:04,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:00:04,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:00:03" (1/3) ... [2020-12-09 10:00:04,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a101fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:04, skipping insertion in model container [2020-12-09 10:00:04,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:04" (2/3) ... [2020-12-09 10:00:04,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a101fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:04, skipping insertion in model container [2020-12-09 10:00:04,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:04" (3/3) ... [2020-12-09 10:00:04,497 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-12-09 10:00:04,506 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 10:00:04,506 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:00:04,508 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:00:04,509 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 10:00:04,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:00:04,545 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 10:00:04,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 10:00:04,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:00:04,573 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:00:04,573 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:00:04,573 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:00:04,573 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:00:04,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:00:04,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:00:04,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:00:04,581 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 10:00:04,583 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-09 10:00:04,585 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-09 10:00:04,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-09 10:00:04,612 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-09 10:00:04,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 10:00:04,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-09 10:00:04,616 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-09 10:00:06,060 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 10:00:06,247 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 10:00:06,308 INFO L131 LiptonReduction]: Checked pairs total: 1534 [2020-12-09 10:00:06,308 INFO L133 LiptonReduction]: Total number of compositions: 54 [2020-12-09 10:00:06,312 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-09 10:00:06,320 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-09 10:00:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-09 10:00:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 10:00:06,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1865753681, now seen corresponding path program 1 times [2020-12-09 10:00:06,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628506697] [2020-12-09 10:00:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628506697] [2020-12-09 10:00:06,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:06,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856193626] [2020-12-09 10:00:06,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 10:00:06,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 10:00:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:00:06,459 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-09 10:00:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,469 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-09 10:00:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 10:00:06,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 10:00:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,476 INFO L225 Difference]: With dead ends: 90 [2020-12-09 10:00:06,476 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 10:00:06,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 10:00:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 10:00:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-09 10:00:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 10:00:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-09 10:00:06,504 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-09 10:00:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,504 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-09 10:00:06,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 10:00:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-09 10:00:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:00:06,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:00:06,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2003798512, now seen corresponding path program 1 times [2020-12-09 10:00:06,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430706382] [2020-12-09 10:00:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430706382] [2020-12-09 10:00:06,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:06,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547962807] [2020-12-09 10:00:06,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:06,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:06,602 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-09 10:00:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,625 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-12-09 10:00:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:00:06,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 10:00:06,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,627 INFO L225 Difference]: With dead ends: 82 [2020-12-09 10:00:06,627 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 10:00:06,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 10:00:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-09 10:00:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 10:00:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-12-09 10:00:06,637 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-12-09 10:00:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,638 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-12-09 10:00:06,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-12-09 10:00:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:00:06,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:00:06,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1988772591, now seen corresponding path program 1 times [2020-12-09 10:00:06,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994544013] [2020-12-09 10:00:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994544013] [2020-12-09 10:00:06,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:06,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847675640] [2020-12-09 10:00:06,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:06,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:06,710 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-12-09 10:00:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,742 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-12-09 10:00:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:06,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 10:00:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,743 INFO L225 Difference]: With dead ends: 78 [2020-12-09 10:00:06,743 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 10:00:06,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:00:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 10:00:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-09 10:00:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 10:00:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-09 10:00:06,749 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-12-09 10:00:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,749 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-09 10:00:06,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-09 10:00:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:00:06,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:00:06,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash 567543910, now seen corresponding path program 1 times [2020-12-09 10:00:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655813494] [2020-12-09 10:00:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655813494] [2020-12-09 10:00:06,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:06,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671317976] [2020-12-09 10:00:06,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:06,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:06,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:06,798 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 3 states. [2020-12-09 10:00:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,805 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-09 10:00:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:06,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 10:00:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,806 INFO L225 Difference]: With dead ends: 33 [2020-12-09 10:00:06,806 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 10:00:06,806 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 [2020-12-09 10:00:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 10:00:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 10:00:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 10:00:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-09 10:00:06,810 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 10 [2020-12-09 10:00:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,810 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-09 10:00:06,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-09 10:00:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:00:06,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:00:06,812 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014395, now seen corresponding path program 1 times [2020-12-09 10:00:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980739976] [2020-12-09 10:00:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980739976] [2020-12-09 10:00:06,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:06,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154469240] [2020-12-09 10:00:06,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:06,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:06,847 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-09 10:00:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,857 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-12-09 10:00:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:00:06,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 10:00:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,857 INFO L225 Difference]: With dead ends: 23 [2020-12-09 10:00:06,858 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 10:00:06,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 10:00:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 10:00:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 10:00:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-09 10:00:06,860 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2020-12-09 10:00:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,860 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-09 10:00:06,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-09 10:00:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 10:00:06,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:06,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:06,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:00:06,861 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:06,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1576465132, now seen corresponding path program 1 times [2020-12-09 10:00:06,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:06,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259453503] [2020-12-09 10:00:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:06,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259453503] [2020-12-09 10:00:06,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:06,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:00:06,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975357081] [2020-12-09 10:00:06,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:06,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:06,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:06,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:06,900 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 5 states. [2020-12-09 10:00:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:06,918 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-12-09 10:00:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:00:06,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 10:00:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:06,918 INFO L225 Difference]: With dead ends: 22 [2020-12-09 10:00:06,918 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:00:06,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:00:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:00:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:00:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:00:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:00:06,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 10:00:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:06,919 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:00:06,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:00:06,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:00:06,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:00:06,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:00:06 BasicIcfg [2020-12-09 10:00:06,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:00:06,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:00:06,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:00:06,922 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:00:06,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:04" (3/4) ... [2020-12-09 10:00:06,924 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:00:06,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 10:00:06,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 10:00:06,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-09 10:00:06,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 10:00:06,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:00:06,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:00:06,957 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4a8af69f-5a1c-40e5-88c3-42e7f024a848/bin/utaipan/witness.graphml [2020-12-09 10:00:06,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:00:06,958 INFO L168 Benchmark]: Toolchain (without parser) took 3209.53 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 72.1 MB in the beginning and 55.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,958 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:00:06,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.16 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 66.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,959 INFO L168 Benchmark]: Boogie Preprocessor took 17.44 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 63.1 MB in the end (delta: 956.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:00:06,959 INFO L168 Benchmark]: RCFGBuilder took 351.21 ms. Allocated memory is still 96.5 MB. Free memory was 63.1 MB in the beginning and 56.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,960 INFO L168 Benchmark]: TraceAbstraction took 2428.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 57.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,960 INFO L168 Benchmark]: Witness Printer took 35.17 ms. Allocated memory is still 117.4 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:06,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.16 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 66.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.44 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 63.1 MB in the end (delta: 956.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 351.21 ms. Allocated memory is still 96.5 MB. Free memory was 63.1 MB in the beginning and 56.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2428.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 57.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 35.17 ms. Allocated memory is still 117.4 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 504 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 1534 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 82 SDtfs, 67 SDslu, 76 SDs, 0 SdLazy, 37 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...