./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_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_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/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 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:41:39,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:41:39,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:41:39,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:41:39,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:41:39,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:41:39,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:41:39,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:41:39,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:41:39,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:41:39,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:41:39,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:41:39,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:41:39,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:41:39,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:41:39,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:41:39,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:41:39,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:41:39,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:41:39,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:41:40,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:41:40,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:41:40,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:41:40,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:41:40,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:41:40,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:41:40,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:41:40,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:41:40,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:41:40,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:41:40,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:41:40,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:41:40,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:41:40,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:41:40,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:41:40,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:41:40,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:41:40,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:41:40,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:41:40,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:41:40,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:41:40,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:41:40,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:41:40,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:41:40,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:41:40,036 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:41:40,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:41:40,036 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:41:40,036 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:41:40,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:41:40,037 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:41:40,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:41:40,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:41:40,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:41:40,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:41:40,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:41:40,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:41:40,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:41:40,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:41:40,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:41:40,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:41:40,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:41:40,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:41:40,041 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_67289fdf-395d-43bd-bd85-3c95c7b41636/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 [2020-12-09 15:41:40,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:41:40,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:41:40,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:41:40,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:41:40,237 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:41:40,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-12-09 15:41:40,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/data/f5f3e5cd6/c5131ea8ed2b49e3a2a1f3d8d3119bef/FLAG0b5fe0468 [2020-12-09 15:41:40,701 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:41:40,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-12-09 15:41:40,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/data/f5f3e5cd6/c5131ea8ed2b49e3a2a1f3d8d3119bef/FLAG0b5fe0468 [2020-12-09 15:41:40,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/data/f5f3e5cd6/c5131ea8ed2b49e3a2a1f3d8d3119bef [2020-12-09 15:41:40,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:41:40,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:41:40,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:41:40,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:41:40,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:41:40,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:41:40" (1/1) ... [2020-12-09 15:41:40,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e808018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:40, skipping insertion in model container [2020-12-09 15:41:40,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:41:40" (1/1) ... [2020-12-09 15:41:40,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:41:40,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:41:40,902 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_67289fdf-395d-43bd-bd85-3c95c7b41636/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i[949,962] [2020-12-09 15:41:41,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:41:41,027 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:41:41,036 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_67289fdf-395d-43bd-bd85-3c95c7b41636/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i[949,962] [2020-12-09 15:41:41,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:41:41,121 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:41:41,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41 WrapperNode [2020-12-09 15:41:41,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:41:41,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:41:41,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:41:41,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:41:41,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:41:41,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:41:41,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:41:41,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:41:41,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... [2020-12-09 15:41:41,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:41:41,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:41:41,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:41:41,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:41:41,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/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 15:41:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 15:41:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 15:41:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:41:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 15:41:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 15:41:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 15:41:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 15:41:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 15:41:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 15:41:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 15:41:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:41:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 15:41:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:41:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:41:41,244 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 15:41:41,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:41:41,450 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 15:41:41,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:41:41 BoogieIcfgContainer [2020-12-09 15:41:41,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:41:41,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:41:41,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:41:41,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:41:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:41:40" (1/3) ... [2020-12-09 15:41:41,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4d1dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:41:41, skipping insertion in model container [2020-12-09 15:41:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:41:41" (2/3) ... [2020-12-09 15:41:41,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4d1dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:41:41, skipping insertion in model container [2020-12-09 15:41:41,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:41:41" (3/3) ... [2020-12-09 15:41:41,460 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-12-09 15:41:41,472 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 15:41:41,472 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:41:41,474 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 15:41:41,474 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 15:41:41,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,507 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 15:41:41,519 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 15:41:41,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 15:41:41,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:41:41,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:41:41,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:41:41,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:41:41,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:41:41,549 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:41:41,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:41:41,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:41:41,560 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 15:41:41,562 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 15:41:41,565 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 15:41:41,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-09 15:41:41,607 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-09 15:41:41,607 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 15:41:41,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 15:41:41,613 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 15:41:43,225 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 15:41:43,421 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 15:41:43,521 INFO L131 LiptonReduction]: Checked pairs total: 2787 [2020-12-09 15:41:43,521 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-09 15:41:43,525 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 15:41:43,542 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 15:41:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 15:41:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 15:41:43,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:43,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:43,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:43,552 INFO L82 PathProgramCache]: Analyzing trace with hash -661732023, now seen corresponding path program 1 times [2020-12-09 15:41:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:43,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861592983] [2020-12-09 15:41:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:43,668 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 15:41:43,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861592983] [2020-12-09 15:41:43,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:43,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:41:43,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255189063] [2020-12-09 15:41:43,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 15:41:43,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 15:41:43,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 15:41:43,682 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 15:41:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:43,703 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 15:41:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 15:41:43,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 15:41:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:43,714 INFO L225 Difference]: With dead ends: 362 [2020-12-09 15:41:43,714 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 15:41:43,715 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 15:41:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 15:41:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 15:41:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 15:41:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 15:41:43,761 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 15:41:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:43,762 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 15:41:43,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 15:41:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 15:41:43,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:41:43,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:43,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:43,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:41:43,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash 961112404, now seen corresponding path program 1 times [2020-12-09 15:41:43,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:43,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064868388] [2020-12-09 15:41:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:43,840 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 15:41:43,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064868388] [2020-12-09 15:41:43,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:43,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:41:43,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939488155] [2020-12-09 15:41:43,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:41:43,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:43,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:41:43,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:41:43,842 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 15:41:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:43,861 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-09 15:41:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:41:43,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 15:41:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:43,864 INFO L225 Difference]: With dead ends: 330 [2020-12-09 15:41:43,864 INFO L226 Difference]: Without dead ends: 266 [2020-12-09 15:41:43,864 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 15:41:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-09 15:41:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-09 15:41:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-09 15:41:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-09 15:41:43,879 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-09 15:41:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:43,879 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-09 15:41:43,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:41:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-09 15:41:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:41:43,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:43,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:43,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:41:43,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:43,881 INFO L82 PathProgramCache]: Analyzing trace with hash -270319833, now seen corresponding path program 1 times [2020-12-09 15:41:43,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:43,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878283217] [2020-12-09 15:41:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:43,929 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 15:41:43,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878283217] [2020-12-09 15:41:43,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:43,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:41:43,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462853123] [2020-12-09 15:41:43,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:41:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:41:43,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:41:43,931 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-09 15:41:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:43,963 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-12-09 15:41:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:41:43,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 15:41:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:43,965 INFO L225 Difference]: With dead ends: 314 [2020-12-09 15:41:43,965 INFO L226 Difference]: Without dead ends: 170 [2020-12-09 15:41:43,965 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 15:41:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-09 15:41:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-09 15:41:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-09 15:41:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-09 15:41:43,975 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-12-09 15:41:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:43,975 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-09 15:41:43,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:41:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-09 15:41:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:41:43,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:43,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:43,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:41:43,977 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2076633207, now seen corresponding path program 1 times [2020-12-09 15:41:43,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:43,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144757773] [2020-12-09 15:41:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,044 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 15:41:44,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144757773] [2020-12-09 15:41:44,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:41:44,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027077868] [2020-12-09 15:41:44,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:41:44,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:41:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:41:44,046 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-09 15:41:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,065 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-12-09 15:41:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:41:44,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 15:41:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,067 INFO L225 Difference]: With dead ends: 183 [2020-12-09 15:41:44,067 INFO L226 Difference]: Without dead ends: 143 [2020-12-09 15:41:44,067 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 [2020-12-09 15:41:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-09 15:41:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-09 15:41:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-09 15:41:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-12-09 15:41:44,072 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-12-09 15:41:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,072 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-12-09 15:41:44,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:41:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-12-09 15:41:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:41:44,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:44,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:44,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:41:44,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash 593138453, now seen corresponding path program 1 times [2020-12-09 15:41:44,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:44,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466395108] [2020-12-09 15:41:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,114 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 15:41:44,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466395108] [2020-12-09 15:41:44,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:41:44,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565159926] [2020-12-09 15:41:44,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:41:44,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:41:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:41:44,115 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-12-09 15:41:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,142 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-12-09 15:41:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:41:44,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 15:41:44,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,143 INFO L225 Difference]: With dead ends: 129 [2020-12-09 15:41:44,143 INFO L226 Difference]: Without dead ends: 104 [2020-12-09 15:41:44,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:41:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-09 15:41:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-09 15:41:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-09 15:41:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-12-09 15:41:44,146 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-12-09 15:41:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,146 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-12-09 15:41:44,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:41:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-12-09 15:41:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 15:41:44,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:44,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:44,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 15:41:44,147 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:44,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:44,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1258270807, now seen corresponding path program 1 times [2020-12-09 15:41:44,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:44,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055735635] [2020-12-09 15:41:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,191 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 15:41:44,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055735635] [2020-12-09 15:41:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:41:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527507557] [2020-12-09 15:41:44,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:41:44,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:41:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:41:44,192 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-12-09 15:41:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,232 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-12-09 15:41:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:41:44,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 15:41:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,233 INFO L225 Difference]: With dead ends: 93 [2020-12-09 15:41:44,233 INFO L226 Difference]: Without dead ends: 85 [2020-12-09 15:41:44,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:41:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-09 15:41:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-09 15:41:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-09 15:41:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-12-09 15:41:44,236 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-12-09 15:41:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,236 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-12-09 15:41:44,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:41:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-12-09 15:41:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 15:41:44,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:44,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:44,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 15:41:44,237 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1011219395, now seen corresponding path program 1 times [2020-12-09 15:41:44,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:44,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511758954] [2020-12-09 15:41:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,279 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 15:41:44,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511758954] [2020-12-09 15:41:44,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:41:44,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199193440] [2020-12-09 15:41:44,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:41:44,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:41:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:41:44,280 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-12-09 15:41:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,310 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-12-09 15:41:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:41:44,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 15:41:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,311 INFO L225 Difference]: With dead ends: 99 [2020-12-09 15:41:44,311 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 15:41:44,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 15:41:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 15:41:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-12-09 15:41:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:41:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 97 transitions. [2020-12-09 15:41:44,313 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 97 transitions. Word has length 18 [2020-12-09 15:41:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,313 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 97 transitions. [2020-12-09 15:41:44,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:41:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 97 transitions. [2020-12-09 15:41:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 15:41:44,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:44,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:44,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 15:41:44,314 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:44,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:44,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1578916891, now seen corresponding path program 2 times [2020-12-09 15:41:44,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:44,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371111385] [2020-12-09 15:41:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,348 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 15:41:44,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371111385] [2020-12-09 15:41:44,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:41:44,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667494173] [2020-12-09 15:41:44,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:41:44,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:41:44,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:41:44,349 INFO L87 Difference]: Start difference. First operand 53 states and 97 transitions. Second operand 5 states. [2020-12-09 15:41:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,369 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-09 15:41:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:41:44,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 15:41:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,370 INFO L225 Difference]: With dead ends: 67 [2020-12-09 15:41:44,370 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 15:41:44,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 15:41:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 15:41:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 15:41:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 15:41:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-09 15:41:44,371 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-09 15:41:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,371 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-09 15:41:44,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:41:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-09 15:41:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 15:41:44,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:41:44,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:41:44,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 15:41:44,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 15:41:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:41:44,372 INFO L82 PathProgramCache]: Analyzing trace with hash 577230555, now seen corresponding path program 3 times [2020-12-09 15:41:44,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:41:44,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585395713] [2020-12-09 15:41:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:41:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:41:44,403 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 15:41:44,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585395713] [2020-12-09 15:41:44,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:41:44,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:41:44,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493967279] [2020-12-09 15:41:44,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:41:44,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:41:44,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:41:44,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:41:44,404 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-09 15:41:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:41:44,421 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-09 15:41:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:41:44,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 15:41:44,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:41:44,421 INFO L225 Difference]: With dead ends: 36 [2020-12-09 15:41:44,421 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:41:44,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 15:41:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:41:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:41:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:41:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:41:44,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 15:41:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:41:44,422 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:41:44,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:41:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:41:44,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:41:44,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 15:41:44,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:41:44 BasicIcfg [2020-12-09 15:41:44,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:41:44,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:41:44,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:41:44,426 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:41:44,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:41:41" (3/4) ... [2020-12-09 15:41:44,429 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:41:44,434 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 15:41:44,434 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 15:41:44,435 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 15:41:44,438 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 15:41:44,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 15:41:44,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:41:44,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:41:44,467 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67289fdf-395d-43bd-bd85-3c95c7b41636/bin/utaipan/witness.graphml [2020-12-09 15:41:44,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:41:44,468 INFO L168 Benchmark]: Toolchain (without parser) took 3741.47 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 83.4 MB in the beginning and 73.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2020-12-09 15:41:44,468 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 121.6 MB. Free memory is still 101.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:41:44,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.23 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 77.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 15:41:44,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.02 ms. Allocated memory is still 121.6 MB. Free memory was 77.0 MB in the beginning and 75.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:41:44,469 INFO L168 Benchmark]: Boogie Preprocessor took 23.37 ms. Allocated memory is still 121.6 MB. Free memory was 75.3 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:41:44,470 INFO L168 Benchmark]: RCFGBuilder took 269.50 ms. Allocated memory is still 121.6 MB. Free memory was 73.8 MB in the beginning and 51.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:41:44,470 INFO L168 Benchmark]: TraceAbstraction took 2971.27 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 51.1 MB in the beginning and 75.9 MB in the end (delta: -24.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:41:44,471 INFO L168 Benchmark]: Witness Printer took 41.45 ms. Allocated memory is still 146.8 MB. Free memory was 75.9 MB in the beginning and 73.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:41:44,472 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 121.6 MB. Free memory is still 101.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.23 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 77.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.02 ms. Allocated memory is still 121.6 MB. Free memory was 77.0 MB in the beginning and 75.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.37 ms. Allocated memory is still 121.6 MB. Free memory was 75.3 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.50 ms. Allocated memory is still 121.6 MB. Free memory was 73.8 MB in the beginning and 51.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2971.27 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 51.1 MB in the beginning and 75.9 MB in the end (delta: -24.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 41.45 ms. Allocated memory is still 146.8 MB. Free memory was 75.9 MB in the beginning and 73.6 MB in the end (delta: 2.3 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 867 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 84 PlacesBefore, 32 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2787 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 184 SDtfs, 240 SDslu, 291 SDs, 0 SdLazy, 85 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 4834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...