./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.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_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/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 e9b1c96eed0367583bf25a0e47ad0463a90fc1bd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:40:31,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:40:31,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:40:31,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:40:31,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:40:31,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:40:31,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:40:31,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:40:31,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:40:31,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:40:31,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:40:31,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:40:31,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:40:31,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:40:31,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:40:31,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:40:31,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:40:31,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:40:31,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:40:31,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:40:31,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:40:31,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:40:31,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:40:31,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:40:31,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:40:31,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:40:31,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:40:31,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:40:31,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:40:31,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:40:31,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:40:31,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:40:31,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:40:31,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:40:31,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:40:31,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:40:31,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:40:31,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:40:31,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:40:31,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:40:31,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:40:31,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:40:31,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:40:31,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:40:31,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:40:31,907 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:40:31,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:40:31,907 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:40:31,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:40:31,907 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:40:31,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:40:31,908 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:40:31,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:40:31,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:40:31,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:40:31,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:40:31,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:40:31,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:40:31,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:40:31,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:40:31,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:40:31,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:40:31,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:40:31,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:40:31,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:40:31,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:40:31,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:40:31,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:40:31,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:40:31,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:40:31,912 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_840056dd-c95f-424c-ba6c-a4f87acdde38/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2020-12-09 17:40:32,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:40:32,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:40:32,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:40:32,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:40:32,099 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:40:32,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-12-09 17:40:32,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/data/a713d8b35/d56f0b381c28473ba8f20507d136edd5/FLAGd72da461c [2020-12-09 17:40:32,563 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:40:32,563 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-12-09 17:40:32,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/data/a713d8b35/d56f0b381c28473ba8f20507d136edd5/FLAGd72da461c [2020-12-09 17:40:32,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/data/a713d8b35/d56f0b381c28473ba8f20507d136edd5 [2020-12-09 17:40:32,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:40:32,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:40:32,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:40:32,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:40:32,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:40:32,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101d9e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32, skipping insertion in model container [2020-12-09 17:40:32,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:40:32,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:40:32,752 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_840056dd-c95f-424c-ba6c-a4f87acdde38/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i[949,962] [2020-12-09 17:40:32,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:40:32,844 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:40:32,852 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_840056dd-c95f-424c-ba6c-a4f87acdde38/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i[949,962] [2020-12-09 17:40:32,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:40:32,924 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:40:32,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32 WrapperNode [2020-12-09 17:40:32,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:40:32,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:40:32,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:40:32,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:40:32,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:40:32,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:40:32,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:40:32,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:40:32,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... [2020-12-09 17:40:32,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:40:32,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:40:32,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:40:32,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:40:32,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/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 17:40:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 17:40:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 17:40:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:40:33,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 17:40:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 17:40:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 17:40:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 17:40:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:40:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:40:33,051 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 17:40:33,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:40:33,304 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 17:40:33,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:33 BoogieIcfgContainer [2020-12-09 17:40:33,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:40:33,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:40:33,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:40:33,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:40:33,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:40:32" (1/3) ... [2020-12-09 17:40:33,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d39a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:40:33, skipping insertion in model container [2020-12-09 17:40:33,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:32" (2/3) ... [2020-12-09 17:40:33,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d39a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:40:33, skipping insertion in model container [2020-12-09 17:40:33,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:33" (3/3) ... [2020-12-09 17:40:33,313 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-12-09 17:40:33,325 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 17:40:33,325 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:40:33,327 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:40:33,327 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 17:40:33,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,352 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,352 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,357 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,357 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,362 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 17:40:33,364 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 17:40:33,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 17:40:33,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:40:33,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:40:33,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:40:33,386 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:40:33,386 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:40:33,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:40:33,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:40:33,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:40:33,395 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 17:40:33,396 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 17:40:33,398 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 17:40:33,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-09 17:40:33,428 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-09 17:40:33,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 17:40:33,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 17:40:33,434 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 17:40:35,241 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 17:40:35,452 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 17:40:35,656 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2020-12-09 17:40:35,656 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-09 17:40:35,660 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-09 17:40:35,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-09 17:40:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-09 17:40:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 17:40:35,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:35,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:35,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:35,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2020-12-09 17:40:35,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:35,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580830970] [2020-12-09 17:40:35,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:35,850 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 17:40:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580830970] [2020-12-09 17:40:35,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:35,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 17:40:35,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635449483] [2020-12-09 17:40:35,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:40:35,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:40:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:40:35,866 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-09 17:40:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:35,902 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2020-12-09 17:40:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:40:35,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 17:40:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:35,914 INFO L225 Difference]: With dead ends: 457 [2020-12-09 17:40:35,915 INFO L226 Difference]: Without dead ends: 315 [2020-12-09 17:40:35,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 17:40:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-09 17:40:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2020-12-09 17:40:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-12-09 17:40:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2020-12-09 17:40:35,962 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2020-12-09 17:40:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:35,963 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2020-12-09 17:40:35,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:40:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2020-12-09 17:40:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 17:40:35,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:35,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:35,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:40:35,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:35,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:35,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2020-12-09 17:40:35,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:35,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778598952] [2020-12-09 17:40:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,025 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 17:40:36,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778598952] [2020-12-09 17:40:36,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:40:36,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397861309] [2020-12-09 17:40:36,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:40:36,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:40:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:40:36,028 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2020-12-09 17:40:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,049 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2020-12-09 17:40:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:40:36,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 17:40:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,052 INFO L225 Difference]: With dead ends: 293 [2020-12-09 17:40:36,052 INFO L226 Difference]: Without dead ends: 293 [2020-12-09 17:40:36,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 17:40:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-09 17:40:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-12-09 17:40:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-09 17:40:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2020-12-09 17:40:36,066 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2020-12-09 17:40:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,067 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2020-12-09 17:40:36,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:40:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2020-12-09 17:40:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:40:36,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:40:36,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2020-12-09 17:40:36,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576744853] [2020-12-09 17:40:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,136 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 17:40:36,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576744853] [2020-12-09 17:40:36,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:40:36,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537478958] [2020-12-09 17:40:36,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:40:36,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:40:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:40:36,138 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2020-12-09 17:40:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,156 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2020-12-09 17:40:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:40:36,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:40:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,158 INFO L225 Difference]: With dead ends: 282 [2020-12-09 17:40:36,158 INFO L226 Difference]: Without dead ends: 282 [2020-12-09 17:40:36,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 17:40:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-09 17:40:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2020-12-09 17:40:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-09 17:40:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2020-12-09 17:40:36,168 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2020-12-09 17:40:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,168 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2020-12-09 17:40:36,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:40:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2020-12-09 17:40:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:40:36,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 17:40:36,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,170 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2020-12-09 17:40:36,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41210256] [2020-12-09 17:40:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,212 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 17:40:36,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41210256] [2020-12-09 17:40:36,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:40:36,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488229324] [2020-12-09 17:40:36,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:40:36,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:40:36,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:40:36,214 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2020-12-09 17:40:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,234 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2020-12-09 17:40:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:40:36,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:40:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,236 INFO L225 Difference]: With dead ends: 264 [2020-12-09 17:40:36,236 INFO L226 Difference]: Without dead ends: 264 [2020-12-09 17:40:36,237 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 17:40:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-09 17:40:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-12-09 17:40:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-09 17:40:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2020-12-09 17:40:36,247 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2020-12-09 17:40:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,247 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2020-12-09 17:40:36,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:40:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2020-12-09 17:40:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 17:40:36,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 17:40:36,250 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,250 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2020-12-09 17:40:36,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027802714] [2020-12-09 17:40:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,299 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 17:40:36,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027802714] [2020-12-09 17:40:36,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:40:36,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173481064] [2020-12-09 17:40:36,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:40:36,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:40:36,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:40:36,301 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2020-12-09 17:40:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,319 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2020-12-09 17:40:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:40:36,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 17:40:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,321 INFO L225 Difference]: With dead ends: 252 [2020-12-09 17:40:36,321 INFO L226 Difference]: Without dead ends: 252 [2020-12-09 17:40:36,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 17:40:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-09 17:40:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2020-12-09 17:40:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-09 17:40:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2020-12-09 17:40:36,327 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2020-12-09 17:40:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,327 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2020-12-09 17:40:36,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:40:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2020-12-09 17:40:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:40:36,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 17:40:36,329 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,330 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2020-12-09 17:40:36,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198978438] [2020-12-09 17:40:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,366 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 17:40:36,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198978438] [2020-12-09 17:40:36,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:40:36,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913892050] [2020-12-09 17:40:36,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:40:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:40:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:40:36,368 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2020-12-09 17:40:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,391 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2020-12-09 17:40:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:40:36,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 17:40:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,393 INFO L225 Difference]: With dead ends: 304 [2020-12-09 17:40:36,393 INFO L226 Difference]: Without dead ends: 200 [2020-12-09 17:40:36,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:40:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-09 17:40:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2020-12-09 17:40:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-09 17:40:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2020-12-09 17:40:36,398 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2020-12-09 17:40:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,398 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2020-12-09 17:40:36,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:40:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2020-12-09 17:40:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:40:36,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:40:36,399 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2020-12-09 17:40:36,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302843298] [2020-12-09 17:40:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,433 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 17:40:36,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302843298] [2020-12-09 17:40:36,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:40:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203475489] [2020-12-09 17:40:36,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:40:36,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:40:36,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:40:36,435 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2020-12-09 17:40:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,460 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2020-12-09 17:40:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 17:40:36,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 17:40:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,461 INFO L225 Difference]: With dead ends: 228 [2020-12-09 17:40:36,461 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 17:40:36,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:40:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 17:40:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2020-12-09 17:40:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 17:40:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2020-12-09 17:40:36,465 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2020-12-09 17:40:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,465 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2020-12-09 17:40:36,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:40:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2020-12-09 17:40:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:40:36,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 17:40:36,466 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2020-12-09 17:40:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069989410] [2020-12-09 17:40:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,496 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 17:40:36,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069989410] [2020-12-09 17:40:36,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:40:36,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673380978] [2020-12-09 17:40:36,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:40:36,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:40:36,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:40:36,497 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2020-12-09 17:40:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,519 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2020-12-09 17:40:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:40:36,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 17:40:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,520 INFO L225 Difference]: With dead ends: 138 [2020-12-09 17:40:36,520 INFO L226 Difference]: Without dead ends: 106 [2020-12-09 17:40:36,520 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 17:40:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-09 17:40:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-09 17:40:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 17:40:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2020-12-09 17:40:36,523 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2020-12-09 17:40:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,523 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2020-12-09 17:40:36,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:40:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2020-12-09 17:40:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 17:40:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 17:40:36,529 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2020-12-09 17:40:36,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604695180] [2020-12-09 17:40:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,560 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 17:40:36,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604695180] [2020-12-09 17:40:36,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:40:36,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633306011] [2020-12-09 17:40:36,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:40:36,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:40:36,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:40:36,562 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2020-12-09 17:40:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,590 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2020-12-09 17:40:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 17:40:36,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 17:40:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,591 INFO L225 Difference]: With dead ends: 101 [2020-12-09 17:40:36,591 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 17:40:36,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:40:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 17:40:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-09 17:40:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 17:40:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2020-12-09 17:40:36,594 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2020-12-09 17:40:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,594 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2020-12-09 17:40:36,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:40:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2020-12-09 17:40:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 17:40:36,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:40:36,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:40:36,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 17:40:36,595 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:40:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:40:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2020-12-09 17:40:36,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:40:36,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645362047] [2020-12-09 17:40:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:40:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:40:36,631 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 17:40:36,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645362047] [2020-12-09 17:40:36,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:40:36,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:40:36,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440055925] [2020-12-09 17:40:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:40:36,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:40:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:40:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:40:36,633 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2020-12-09 17:40:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:40:36,654 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-12-09 17:40:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 17:40:36,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 17:40:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:40:36,654 INFO L225 Difference]: With dead ends: 76 [2020-12-09 17:40:36,655 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:40:36,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:40:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:40:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:40:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:40:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:40:36,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 17:40:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:40:36,655 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:40:36,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:40:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:40:36,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:40:36,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 17:40:36,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:40:36 BasicIcfg [2020-12-09 17:40:36,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:40:36,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:40:36,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:40:36,658 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:40:36,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:33" (3/4) ... [2020-12-09 17:40:36,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:40:36,665 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 17:40:36,665 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 17:40:36,665 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 17:40:36,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 17:40:36,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 17:40:36,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:40:36,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:40:36,695 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_840056dd-c95f-424c-ba6c-a4f87acdde38/bin/utaipan/witness.graphml [2020-12-09 17:40:36,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:40:36,696 INFO L168 Benchmark]: Toolchain (without parser) took 4107.51 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 77.6 MB in the beginning and 105.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,697 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 107.0 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:40:36,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.52 ms. Allocated memory is still 107.0 MB. Free memory was 77.4 MB in the beginning and 62.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 107.0 MB. Free memory was 62.6 MB in the beginning and 60.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,698 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 59.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:40:36,699 INFO L168 Benchmark]: RCFGBuilder took 316.25 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 75.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,700 INFO L168 Benchmark]: TraceAbstraction took 3350.66 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 75.0 MB in the beginning and 108.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,700 INFO L168 Benchmark]: Witness Printer took 37.13 ms. Allocated memory is still 163.6 MB. Free memory was 108.6 MB in the beginning and 105.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:40:36,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 107.0 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.52 ms. Allocated memory is still 107.0 MB. Free memory was 77.4 MB in the beginning and 62.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 107.0 MB. Free memory was 62.6 MB in the beginning and 60.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.27 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 59.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 316.25 ms. Allocated memory is still 107.0 MB. Free memory was 59.1 MB in the beginning and 75.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3350.66 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 75.0 MB in the beginning and 108.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 37.13 ms. Allocated memory is still 163.6 MB. Free memory was 108.6 MB in the beginning and 105.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 10 MinimizatonAttempts, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...